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// SPDX-License-Identifier: UNLICENSED
// Copyright 2025 US Fintech LLC and DelNorte Holdings.
// 
// Permission to use, copy, modify, or distribute this software is strictly prohibited
// without prior written consent from either copyright holder.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE,
// ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// OFFICIAL DEL NORTE NETWORK COMPONENT 
// Provides immediate membership access to platform at different levels. 
// Required Non US or accredited US registration to swap for DTV token. Registration available within 180 days per terms.delnorte.io . 
// This token is minimally tested. Use at your own risk.   
// Designed by Ken Silverman as part of his ElasticTreasury (HUB and SPOKE), PeerTreasury and Controller model.  
// This deployment is for Trueviewchain Inc. a Panama entity and Del Norte El Salvador S.A  a subsidiary of Del Norte Holdings, Delaware USA.  
// Permission to change metadata stored on blockchain explorers granted to Del Norte Holdings, DE only.
// Compilation help from Maleeha Naveed. Deployed by Maleeha Naveed. May 5th, 2025
pragma solidity 0.8.29;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Permit.sol";
import "./ElasticTreasuryHub.sol";
import "./PeerTreasury.sol";

/// @author Ken Silverman
/// @notice DelNorte Club Token is the functional token of DelNorte El Salvador S.A. and all nations of the Del Norte Network.
contract DelNorteClubToken is ERC20, ERC20Permit, ERC20Burnable, ElasticTreasuryHub, PeerTreasury {
    
    event RegistrarEvent(address indexed registrar, uint256 blockNumber, string action, uint256 numUsers);
    struct WhitelistEntry {
        address user;
        string note;
        bool isUS;
    }
    // 825,000,000 DTVC all tokens less DTVX distributed to founders and early purchasers.
    // 1,000,000,000 DTVC total supply. (plus one for distinguishing from DTV for bytecode verification)
    //175,000,000 remaining to be burned when DTVX is provided.
    uint256 public constant MAX_SUPPLY = 1_000_000_001 * 10**18;
    bool public gatingActive = false;

    mapping(address => string) public whitelistedUsers;
    mapping(address => bool)   public isUserRestricted;
    mapping(address => bool)   public whitelistedUsersIsUSA;
    address[] public whitelistedUserList;

    modifier onlyTokenExecutives() {
        require(IController(controller).isOfficialEntity("TokenAdmin",msg.sender),"NotTknExec");
        _;
    }

    // if masterHub is 00000000000 it means SELF (pass it up the line)
    // address baseTreasuryAddress, address intialAdmin
    /// @author Ken Silverman
    /// @notice DelNorte Club Token is the membership club token for DelNorte El Salvador S.A.
    /// @dev This token is not functional but does provide immediate access tot the dev.delnorte.io development platform
    /// @dev To monitor and help mold the state of DelNorte development progress in real time.
    /// @dev  Regsitration under US securities law REG S. and REG D. 506C required for swap to DTV.
    constructor(address _controller, address initialAdmin)
        ERC20("DelNorte Club Token", "DTVC")
        ERC20Permit("DelNorte Club Token")
        ElasticTreasuryHub(_controller, "DelNorteClubToken")
        PeerTreasury(_controller)
    {
        require(_controller != address(0), "ctrolr is zero");
        //bool areLords = IController(_controller).isOfficialEntity("TreasuryAdmin",initialAdmin);
        //require(areLords, "First token admin (multi-sig execs) must be initial Controller TreasAdmin.");
        _mint(address(this), MAX_SUPPLY);
        // Can we as admins be registrar? Yes if we provide KYC
        // Controller must mark this SC as SmartContract already
        // These calls assume controller is of type IController or castable
        // AT LEAST ONe REGISTRAR MUST BE ADDED By a CONTROLLER TREASURYADMIN or nobody wil be able to be whitelisted!
        // IController(controller).addOfficialEntity("Registrar", initialAdmin,"ExecGrp", "acting Registrar");
        IController(controller).addOfficialEntity("TokenAdmin", initialAdmin,"ExecGrp", "initTknAdmin");
    }

    // no LP or other retrieval to any non-registered user (except by executive manual add to ReleaseManager). 
    //  USACCRED or Non-US can register.  but only NON-US reg can receive  (except via ReleaseManager)
    //  LP considerations: in the common flow:
    //
    // For user selling tokens (input):
    //   In transferFrom(sender, recipient, amount):
    //     sender     = user address
    //     recipient  = pool address <== not whitelisted not officialEntity smart contract
    //     msg.sender = router contract <== Uniswap V2, V3, sushiSwap addresses etc ... are whitelisted officialEntity smart contracts
    //            so anyone can send. (cannot have unless whitelisted or manually put into trelease manager though)
    //
    // For user buying tokens (output):
    //   In transfer(recipient, amount):
    //   msg.sender = pool address <== not whitelisted not officialEntity smart contract
    //   recipient = user address <== is receiver nonUS? yes! all good, no!, Will fail from any LP. 
    function isRestricted(address sender, address receiver) public view returns (bool) {
        // Did sender have an address in an unauthorized wrapped token or otherwise become blacklisted for life?  
        // Not today!  BANNED! blacklisted = whitelisted + restricted sender does NOT need to be whitelisted, but cannot be restricted 
        // That's becaseu a sender cant get it in the first place unless they are whitelisted anyway.
        if (bytes(whitelistedUsers[sender]).length > 0 && isUserRestricted[sender]) {
            return true;
        }
        if (!gatingActive || isUserWhitelistedNonUSA(receiver)) {
            return false;
        }
        // What if user is US?  How do we guarantee early US adopters get their exact owed tokens but new US users cannot buy or receive? 
        // and old US users cannot buy or sell anymore then their old SAFT agreement specifies?
        // WE manually add all early purchasers to the ReleaseManager which itself is whitelisted as an official smart contract
        // Therefore, the US user must be added to the ReleaseManager manaually or via a swap from another token like DTVC
        // The line above prevents the US user from receiving except by a whitelisted contract (ReleaseManager) 
        // The next line allows ANY official smart contract in our system to permit receiving of DTV 
        // Our release manager is one such contract an the LP router is another.
        // This is the only way to prevent US users from buying or receiving any more tokens then the ReleaseManager will grant them. 
        // They cannot sell accept to the LP. The LP sell is allowed becasue transferFrom msg.sender is the whitelisted router contract.
        // (see next line granting permission as the fourth officialEntity)
        // Any holder can sell to any LP on any official router.  If they hold they must be allowed to sell under:
        // REG S or REG D (we have proof they held for more than 12 months).
        // All holders/receivers are already registered, held for 12 months or are confirmed non-US residents.
        return !(IController(controller).isOfficialQuadrupleEntityFast(KECCAK_TREASURY_ADMIN, sender,KECCAK_SMART_CONTRACT, sender,KECCAK_SMART_CONTRACT, receiver,KECCAK_SMART_CONTRACT,msg.sender,false));
    }

    function isUnrestrictedWhitelistedUser(address user) public view returns (bool) {
        return bytes(whitelistedUsers[user]).length > 0 && !isUserRestricted[user];
    }

    /// @notice Returns true if `user` is whitelisted and not flagged US
    // must be TRUE for DTVC swaps.  See TokenSaleAndSwap.sol
    function isUserWhitelistedNonUSA(address user) public view returns (bool) {
        // must have a registration note + US‑flag == 0
        return !gatingActive || (bytes(whitelistedUsers[user]).length > 0 && whitelistedUsersIsUSA[user] == false && !isUserRestricted[user]);
    }
    function getUserRegistrationStatus(address user, bool notGatedOverride) public view returns (uint8) {
        if (notGatedOverride && !gatingActive) {
            return 3; // don't care if registered or not
        }
        if (bytes(whitelistedUsers[user]).length == 0) {
            return 0; // Not registered
        }
        if (whitelistedUsersIsUSA[user]) {
            return 1; // US
        }
        return 2; // Non-US
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        require(!isRestricted(msg.sender, recipient), "restricted");
        return super.transfer(recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        require(!isRestricted(sender, recipient), "restricted");
        return super.transferFrom(sender, recipient, amount);
    }

    function setGating(bool active) external onlyTokenExecutives {
        gatingActive = active;
    }

    function getAllWhitelistedUsers() external view returns (address[] memory) {
       return whitelistedUserList;
    }

    // NOT just for sales but for regular users who are registered
    function addWhitelistedUser(address user, string memory registrationNote, bool isUS) external {
         require(IController(controller).isOfficialEntity("Registrar", msg.sender), "Not Regstrar");
         if (bytes(whitelistedUsers[user]).length == 0) {
             whitelistedUserList.push(user);
         }
         whitelistedUsers[user] = registrationNote;
         whitelistedUsersIsUSA[user] = isUS;                     // added: default to non‑US
         emit RegistrarEvent(msg.sender, block.number, "Added/updated User", 1);
    }

    function addWhitelistedUsers(WhitelistEntry[] calldata entries) external {
        require(IController(controller).isOfficialEntity("Registrar", msg.sender), "Not Regstrar");
        uint256 numUsers = 0;
        for (uint256 i = 0; i < entries.length; ++i) {
            address user = entries[i].user;
            if (bytes(whitelistedUsers[user]).length == 0) {
                whitelistedUserList.push(user);
                numUsers++;
            }
            whitelistedUsers[user] = entries[i].note;
            whitelistedUsersIsUSA[user] = entries[i].isUS;                     // added: default to non‑US
        }
        emit RegistrarEvent(msg.sender, block.number, "Added Users", numUsers);
    }

    // Only Registrar can delete a whitelisted user, and ONLY if a mistake was made,
    // we dont want to delete a user for accountability we just want to restrict them if necassary for accountability
    // can remove this method if needed
    //function deleteWhitelistedUser(address user) external {
    //    require(IController(controller).isOfficialEntity("Registrar",msg.sender));
    //    delete whitelistedUsers[user];
    //    emit RegistrarEvent(msg.sender, block.number, "Deleted a User", 1);
    //}

    function restrictWhitelistedUsers(address[] calldata users) external {
        require(IController(controller).isOfficialEntity("Registrar", msg.sender), "Not Regstrar");
        uint256 numUsers = 0;
        for (uint256 i = 0; i < users.length; ++i) {
            address user = users[i];
            isUserRestricted[user] = true;
            numUsers++;
        }
        emit RegistrarEvent(msg.sender, block.number, "Users Rstrcted", numUsers);
    }

    function reactivateWhitelistedUsers(address[] calldata users) external {
        require(IController(controller).isOfficialEntity("Registrar", msg.sender), "Not Regstrar");
        uint256 numUsers = 0;
        for (uint256 i = 0; i < users.length; ++i) {
            address user = users[i];
            if (bytes(whitelistedUsers[user]).length != 0 && isUserRestricted[user]) {
                isUserRestricted[user] = false;
                numUsers++;
            }
        }
        emit RegistrarEvent(msg.sender, block.number, "Users Rctivted", numUsers);
    }

    function getActiveWhitelistedUsers() external view returns (address[] memory) {
        uint256 activeCount = 0;
        for (uint256 i = 0; i < whitelistedUserList.length; ++i) {
            if (!isUserRestricted[whitelistedUserList[i]]) {
                activeCount++;
            }
        }
        address[] memory activeUsers = new address[](activeCount);
        uint256 j = 0;
        for (uint256 i = 0; i < whitelistedUserList.length; ++i) {
            address user = whitelistedUserList[i];
            if (!isUserRestricted[user]) {
                activeUsers[j++] = user;
            }
        }
        return activeUsers;
    }

    /**
     * @notice Allows a user to self-register (whitelist themselves) using an off-chain signature
     *         provided by an approved Registrar. The registrar signs a hashed message consisting of:
     *
     *         keccak256(abi.encodePacked(userAddress + "_" + thisTokencontractAddress))
     *
     *         - The registration note (string) passed to this function is NOT part of the signed message.
     *           It is for reference and display only and can be spoofed. All actual verification (e.g., KYC,
     *           ISO country code, etc.) is done off-chain by registrar, details stored off-chain by address.
     *
     *         - The registrar's address must be registered in the controller as an official entity
     *           of type "Registrar".     registrarSignature = regKey
     *         - The user (msg.sender) pays the gas and must be the subject of the signed message.
     */
     // @rawMessage = user + thisContract + "0"/"1"   1 = USACCRDTD  (user and thiscontract are fixed Length 20 bytes, no spearator needed)
     // US accredited are NOT allowed for PDTV swaps, that is why we store this flag.
     //registrationNote = "isUs
    function whitelistUserWithRegKey(address registrarAddress, bool isUS, bytes calldata registrarSignedMessage,  string calldata registrationNote) external {
        require(bytes(whitelistedUsers[msg.sender]).length == 0, "User already registered");
        // build raw message = user + thisContract + "0"/"1"    (user and thiscontract are fixed Length 20 bytes, no spearator needed)
        bytes memory rawMessage = abi.encodePacked(
            msg.sender,
            address(this),
            isUS ? "1" : "0"
        );
        bytes32 messageHash = keccak256(rawMessage);
        // Ethereum signed message format
        bytes32 ethSignedMessageHash = keccak256(
            abi.encodePacked("\x19Ethereum Signed Message:\n32", messageHash)
        );
        // Recover signer
        address recoveredSigner = recoverSigner(ethSignedMessageHash, registrarSignedMessage);
        require(recoveredSigner == registrarAddress,   "Sig not from registrar");
        require(IController(controller).isOfficialEntity("Registrar", registrarAddress),"invalid registrar");
        // Whitelist the user
        whitelistedUsers[msg.sender] = registrationNote;
        whitelistedUserList.push(msg.sender);
        whitelistedUsersIsUSA[msg.sender] = isUS;
        emit RegistrarEvent(registrarAddress, block.number, "User Self-Regstd", 1);
    }

    // Internal helper to recover the signer from signature
    function recoverSigner(bytes32 hash, bytes memory signature) internal pure returns (address) {
        require(signature.length == 65, "Invalid sig len");
        bytes32 r;
        bytes32 s;
        uint8 v;
        assembly {
            r := mload(add(signature, 32))
            s := mload(add(signature, 64))
            v := byte(0, mload(add(signature, 96)))
        }
        if (v < 27) {
            v += 27;
        }
        require(v == 27 || v == 28, "Invalid v val");
        return ecrecover(hash, v, r, s);
    }

}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)

pragma solidity ^0.8.0;

interface IERC5267 {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        _spendAllowance(account, _msgSender(), amount);
        _burn(account, amount);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/ERC20Permit.sol)

pragma solidity ^0.8.0;

import "./IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/cryptography/EIP712.sol";
import "../../../utils/Counters.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;

    mapping(address => Counters.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
     * However, to ensure consistency with the upgradeable transpiler, we will continue
     * to reserve a slot.
     * @custom:oz-renamed-from _PERMIT_TYPEHASH
     */
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {}

    /**
     * @inheritdoc IERC20Permit
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSA.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @inheritdoc IERC20Permit
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @inheritdoc IERC20Permit
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        Counters.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Data with intended validator, created from a
     * `validator` and `data` according to the version 0 of EIP-191.
     *
     * See {recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x00", validator, data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.8;

import "./ECDSA.sol";
import "../ShortStrings.sol";
import "../../interfaces/IERC5267.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * _Available since v3.4._
 *
 * @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
 */
abstract contract EIP712 is IERC5267 {
    using ShortStrings for *;

    bytes32 private constant _TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _cachedDomainSeparator;
    uint256 private immutable _cachedChainId;
    address private immutable _cachedThis;

    bytes32 private immutable _hashedName;
    bytes32 private immutable _hashedVersion;

    ShortString private immutable _name;
    ShortString private immutable _version;
    string private _nameFallback;
    string private _versionFallback;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        _name = name.toShortStringWithFallback(_nameFallback);
        _version = version.toShortStringWithFallback(_versionFallback);
        _hashedName = keccak256(bytes(name));
        _hashedVersion = keccak256(bytes(version));

        _cachedChainId = block.chainid;
        _cachedDomainSeparator = _buildDomainSeparator();
        _cachedThis = address(this);
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _cachedThis && block.chainid == _cachedChainId) {
            return _cachedDomainSeparator;
        } else {
            return _buildDomainSeparator();
        }
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _hashedName, _hashedVersion, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev See {EIP-5267}.
     *
     * _Available since v4.9._
     */
    function eip712Domain()
        public
        view
        virtual
        override
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        return (
            hex"0f", // 01111
            _name.toStringWithFallback(_nameFallback),
            _version.toStringWithFallback(_versionFallback),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/ShortStrings.sol)

pragma solidity ^0.8.8;

import "./StorageSlot.sol";

// | string  | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA   |
// | length  | 0x                                                              BB |
type ShortString is bytes32;

/**
 * @dev This library provides functions to convert short memory strings
 * into a `ShortString` type that can be used as an immutable variable.
 *
 * Strings of arbitrary length can be optimized using this library if
 * they are short enough (up to 31 bytes) by packing them with their
 * length (1 byte) in a single EVM word (32 bytes). Additionally, a
 * fallback mechanism can be used for every other case.
 *
 * Usage example:
 *
 * ```solidity
 * contract Named {
 *     using ShortStrings for *;
 *
 *     ShortString private immutable _name;
 *     string private _nameFallback;
 *
 *     constructor(string memory contractName) {
 *         _name = contractName.toShortStringWithFallback(_nameFallback);
 *     }
 *
 *     function name() external view returns (string memory) {
 *         return _name.toStringWithFallback(_nameFallback);
 *     }
 * }
 * ```
 */
library ShortStrings {
    // Used as an identifier for strings longer than 31 bytes.
    bytes32 private constant _FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;

    error StringTooLong(string str);
    error InvalidShortString();

    /**
     * @dev Encode a string of at most 31 chars into a `ShortString`.
     *
     * This will trigger a `StringTooLong` error is the input string is too long.
     */
    function toShortString(string memory str) internal pure returns (ShortString) {
        bytes memory bstr = bytes(str);
        if (bstr.length > 31) {
            revert StringTooLong(str);
        }
        return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
    }

    /**
     * @dev Decode a `ShortString` back to a "normal" string.
     */
    function toString(ShortString sstr) internal pure returns (string memory) {
        uint256 len = byteLength(sstr);
        // using `new string(len)` would work locally but is not memory safe.
        string memory str = new string(32);
        /// @solidity memory-safe-assembly
        assembly {
            mstore(str, len)
            mstore(add(str, 0x20), sstr)
        }
        return str;
    }

    /**
     * @dev Return the length of a `ShortString`.
     */
    function byteLength(ShortString sstr) internal pure returns (uint256) {
        uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
        if (result > 31) {
            revert InvalidShortString();
        }
        return result;
    }

    /**
     * @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
     */
    function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
        if (bytes(value).length < 32) {
            return toShortString(value);
        } else {
            StorageSlot.getStringSlot(store).value = value;
            return ShortString.wrap(_FALLBACK_SENTINEL);
        }
    }

    /**
     * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     */
    function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
        if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
            return toString(value);
        } else {
            return store;
        }
    }

    /**
     * @dev Return the length of a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     *
     * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
     * actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
     */
    function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
        if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
            return byteLength(value);
        } else {
            return bytes(store).length;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: UNLICENSED
// Copyright 2025 US Fintech LLC and DelNorte Holdings.
// 
// Permission to use, copy, modify, or distribute this software is strictly prohibited
// without prior written consent from either copyright holder.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE,
// ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// OFFICIAL DEL NORTE NETWORK COMPONENT 
// Designed and coded by: Ken Silverman
// Compiled and deployed by Maleeha Naveed on behalf of Del Norte
pragma solidity 0.8.29;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../interfaces/IController.sol"; //   // ⇐ for method signatures only to allow casting during compilation.
import "../interfaces/IElasticTreasurySpoke.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
/// @title ElasticTreasuryHub
/// @notice A contract for managing a treasury of ERC20 tokens and ETH
/// @dev This contract is used to manage a treasury of ERC20 tokens and ETH
/// @author Ken Silverman
abstract contract ElasticTreasuryHub {

    using SafeERC20 for IERC20;

    address public controller;
    bytes32 public constant KECCAK_TREASURY_ADMIN = keccak256(bytes("TreasuryAdmin"));
    bytes32 public constant KECCAK_SMART_CONTRACT = keccak256(bytes("SmartContract"));
    uint256 constant DUST = 0.01 ether;

    event HubTreasuryEvent(address adminCaller, string msg, bool success,address smartContractTarget, uint256 amount, address tokenOrZero);
    event HubExecutiveTokensWithdrawalEvent(address adminCaller, address receiver, uint256 amt, string note, address tokenSC);
    event HubExecutiveEthWithdrawalEvent(address adminCaller, address receiver, uint256 amt, string note);
    event HubExternalReceive(address indexed sender,address indexed origin,uint256 amount,uint256 blockNumber,uint256 gasLeft);

    struct SingleCoinTreasuryState {
        string label;
        uint256 totalTransferred;
        uint256 totalReclaimed;
        uint256 totalTimesTransferred;
        uint256 totalTimesReclaimed;
        uint256[] failedReclaimAttemptAmounts;
        uint256[] bouncedReclaimAmounts;
    }

    struct AllCoinTreasury {
        mapping(address => SingleCoinTreasuryState) tokenTreasury;
        address[] tokenTreasuryKeys;
        SingleCoinTreasuryState ethTreasury;
        string label;
    }

    mapping(address => AllCoinTreasury) private treasury;
    address[] private treasuryKeys;


     // elastic treasury events with gas that fail without reversion or require

    // controller reference is NOW stored in Recoverable

   // if somehow anyone managed a call to a spoke reclaim, (in theory they can't) but if they did,  then
   // that SC would have the authority to call the reclaim here as a SC exec.
   // therefore we require BOTH SC as spoke AND tx.origin to be Treas on reclaim
    modifier onlyTreas()  {
        require(IController(controller).isOfficialEntityFast(KECCAK_TREASURY_ADMIN,msg.sender), "Unauth access");
        _;  // run the code block referencing this modifier
    }

    // masterHub can no longer exist because BaseTreasury is a SINGLE entity, not inherited anymore.
    // in other words, the ENTIRE Del Norte system uses ONE Base Treasury instance as CONTROL PANEL.
    // Controller already has an initial admin, so do not add any more here.
    // Admin can call addEntity to add more. (controller has option to receive more in init() but not necessary.
    constructor(address _controllerAddress, string memory contractName) {
          controller = _controllerAddress;
          IController(_controllerAddress).init(address(this), contractName);
    }

    // EMERGENCY withdraw for admin controlled DIRECT withdrawals to a PERSON (not a smart contract)
    // this can ONLY happen for example, when the company wants to send some USDC or ETH from the Sales contract
    // to an EXECUTIVE of the company for the purposes of exchanging to USDC, as an example.
    // Such USDC can be spent on a capital expense or manually passed into the vesting pool.
    // ONLY HUBS can do this. For example, only contracts GENERATING or expected to RECEIVE
    // ETH or tokens from an external event (not from a HUB)  should be declared as HUBS.
    // EXCEPTIONS: send tokens to a launchpad or other noted entity can be a SC.
    function executiveWithdrawETH(address personAddress, uint256 amt, string memory note) external onlyTreas {
        require(address(this).balance >= amt, "Insufficient ETH balance");
        (bool success, ) = payable(personAddress).call{value: amt}("");
        require(success, "ETH transfer failed");
        emit HubExecutiveEthWithdrawalEvent(msg.sender, personAddress, amt, note);
    }

    function executiveWithdrawTokens(address personAddress, uint256 amt, address tokenSCAddress, string memory note) external onlyTreas {
        require(tokenSCAddress != address(0), "Invalid tok addr");
        IERC20 token = IERC20(tokenSCAddress);
        require(token.balanceOf(address(this)) >= amt, "Insuffic tok bal");
        bool success = token.transfer(personAddress, amt);
        require(success, "Token transfer failed");
        emit HubExecutiveTokensWithdrawalEvent(msg.sender, personAddress, amt, note, tokenSCAddress);
    }


    /// @param SCAddress is the spoke address transfer to    
    /// @param tokenAddress is the transfer from treasury token address
    /// @param allCoinLabel is the label of the spoke (contractName preferred)
    /// @param tokenLabel is the label of the token   (symbol of token prefferred)
    /// @param amount is the amount to transfer
    // NEW: Add this import at the top of your contract file
    function treasuryTransfer(address SCAddress, string memory allCoinLabel, address tokenAddress, string memory tokenLabel,uint256 amount) external onlyTreas returns (bool) {
        // NEW: Basic validation checks with specific error messages
        require(SCAddress != address(0), "SCAddress cannot be zero address");
        require(tokenAddress != address(0), "TokenAddress cannot be zero address");
        require(amount > 0, "Amount must be greater than zero");
        require(isContract(SCAddress), "Invalid contract: SCAddress is not a contract");
        require(bytes(tokenLabel).length > 0, "Token label cannot be empty");
        // Add to smartContractAdmins array if not already included
        require(IController(controller).isOfficialEntity("SmartContract",SCAddress), "Spoke not yet part of SC network.");
        // SELF is added as official SC in parent constructor - and same for spoke
        AllCoinTreasury storage coinTreasury = treasury[SCAddress];
        if (bytes(coinTreasury.label).length != 0) {
            require(keccak256(bytes(coinTreasury.label)) == keccak256(bytes(allCoinLabel)),"AllCoinTreasury label mismatch");
        }
        else {
            coinTreasury.label = allCoinLabel;
            treasuryKeys.push(SCAddress); // NEW: add new spoke key
        }
        SingleCoinTreasuryState storage tokenState = coinTreasury.tokenTreasury[tokenAddress];
        // If this is a new token (label is empty), add it to the keys array
        if (bytes(tokenState.label).length == 0) {
            // This is a new token, add it to the keys array
            coinTreasury.tokenTreasuryKeys.push(tokenAddress);
            // Also set the label if provided
            if (bytes(tokenLabel).length != 0) {
                tokenState.label = tokenLabel;
            }
        } 
        else if (bytes(tokenLabel).length != 0) {
            // Token exists, just verify the label matches
            require(keccak256(bytes(tokenState.label)) == keccak256(bytes(tokenLabel)), "Token label mismatch");
        }
        // NEW: Check token balance before attempting transfer
        uint256 contractBalance = IERC20(tokenAddress).balanceOf(address(this));
        require(contractBalance >= amount, "Insufficient token balance for transfer");
        // NEW: Update state before transfer (prevent reentrancy)
        tokenState.totalTransferred += amount;
        tokenState.totalTimesTransferred++;
        //bytes32 labelHash = keccak256(bytes(tokenLabel));
        //if (labelHash == USDT_LABEL_UPPER || labelHash == USDT_LABEL_LOWER) {
        //    (bool success, ) = tokenAddress.call(abi.encodeWithSelector(0xa9059cbb, SCAddress, amount));
        //  require(success, "USDT transfer failed");
        //}
        //else {
        // For other tokens, use regular transfer with boolean check
        IERC20(tokenAddress).safeTransfer(SCAddress, amount);
        //}
        // Use low-level call to treasuryReceive - most gas efficient
        (bool success,) = SCAddress.call(abi.encodeWithSelector(bytes4(keccak256("treasuryReceive(address,uint256)")),SCAddress,amount));
        // Check success and provide meaningful error if possible
        require(success, "Target not spoke or bad TR");
        emit HubTreasuryEvent(msg.sender, "Amount transferred to spoke", true, SCAddress, amount, tokenAddress);
        return true;
    }

    /// @param SCAddress is the spoke address transfer to    
    /// @param allCoinLabel is the label of the spoke (contractName preferred)
    /// @param ethLabel is the label for ETH   ("ETH")
    /// @param amount is the amount to transfer
    function treasuryTransferETH(address payable SCAddress, string memory allCoinLabel, string memory ethLabel, uint256 amount) external onlyTreas returns (bool) {
        // NEW: Basic validation checks with specific error messages
        require(SCAddress != address(0), "SCAddress cannot be zero address");
        require(amount > 0, "Amount must be greater than zero");
        require(isContract(SCAddress), "Invalid contract: SCAddress is not a contract");
        // NEW: Check if spoke is registered before proceeding
        require(IController(controller).isOfficialEntity("SmartContract", SCAddress), "Spoke not yet part of SC network.");
        AllCoinTreasury storage coinTreasury = treasury[SCAddress];
        if (bytes(coinTreasury.label).length != 0) {
            require(keccak256(bytes(coinTreasury.label)) == keccak256(bytes(allCoinLabel)),"AllCoinTreas label mismatch");
        }
        else {
            coinTreasury.label = allCoinLabel;
            // NEW: Add key if it's a new treasury
            treasuryKeys.push(SCAddress);
        }
        SingleCoinTreasuryState storage ethState = coinTreasury.ethTreasury;
        if (bytes(ethState.label).length != 0 && bytes(ethLabel).length != 0) {
            require(keccak256(bytes(ethState.label)) == keccak256(bytes(ethLabel)),"ETH label mismatch");
        }
        else if (bytes(ethState.label).length == 0 && bytes(ethLabel).length != 0) {
            ethState.label = ethLabel;
        }
        // Check ETH balance
        require(address(this).balance >= amount, "Insufficient ETH balance");
        // NEW: Update state before transfer (prevent reentrancy)
        ethState.totalTransferred += amount;
        ethState.totalTimesTransferred++;
        // NEW: Use try-catch for error handling
        (bool success,) = SCAddress.call{value: amount}(abi.encodeWithSelector(bytes4(keccak256("treasuryReceiveETH()"))));
        require(success, "Target not spoke or bad TR ETH");
        // ETH transfer succeeded
        //} catch Error(string memory reason) {
        //    // Revert state changes on failure
        //    ethState.totalTransferred -= amount;
        //    ethState.totalTimesTransferred--;
        //    emit HubTreasuryEvent(msg.sender, reason, false, SCAddress, amount, address(0));
        //    revert(string(abi.encodePacked("ETH transfer failed: ", reason)));
        //} catch {
        //     // Revert state changes on unknown failure
         //   ethState.totalTransferred -= amount;
         //   ethState.totalTimesTransferred--;
         //   emit HubTreasuryEvent(msg.sender, "Unknown ETH transfer error", false, SCAddress, amount, address(0));
         //   revert("ETH transfer failed: unknown error");
        //}
        emit HubTreasuryEvent(msg.sender, "ETH transferred to SC", true, SCAddress, amount, address(0));
        return true;
    }

// ETH reclaim receiver
function treasuryReceiveReclaimedETH() external payable returns (bool) {
    AllCoinTreasury storage coinTreasury = treasury[msg.sender];
    require(bytes(coinTreasury.label).length != 0, "Treasury entry does not exist for caller as SPOKE");
    require(IController(controller).isOfficialDoubleEntity("SmartContract",msg.sender,"TreasuryAdmin",tx.origin,true),
        "Originator must be treas and sender must be an official smart contract.");
    SingleCoinTreasuryState storage ethState = coinTreasury.ethTreasury;
    ethState.totalReclaimed += msg.value;
    ethState.totalTimesReclaimed++;
    emit HubTreasuryEvent(msg.sender, "ETH reclaimed", true,  msg.sender,msg.value,address(0));
    return true;
}

// Token reclaim notifier
function treasuryReceiveReclaimedTokens(address tokenAddress, uint256 amt) external returns (bool) {
    AllCoinTreasury storage coinTreasury = treasury[msg.sender];
    require(bytes(coinTreasury.label).length != 0, "Treasury entry does not exist");
    require(IController(controller).isOfficialDoubleEntity("SmartContract",msg.sender,
                                                                "TreasuryAdmin",tx.origin,true),
        "Originator must be treas and sender must be an official smart contract.");
    SingleCoinTreasuryState storage tokenState = coinTreasury.tokenTreasury[tokenAddress];
    tokenState.totalReclaimed += amt;
    tokenState.totalTimesReclaimed++;
    emit HubTreasuryEvent(msg.sender, "Token reclaimed", true, address(this),amt,tokenAddress);
    return true;
}




function treasuryReclaimRequest(address SCAddress, address tokenAddress, uint256 amount) external onlyTreas returns (bool) {
        uint256 availableToReclaim = treasury[SCAddress].tokenTreasury[tokenAddress].totalTransferred - treasury[SCAddress].tokenTreasury[tokenAddress].totalReclaimed;
        if (amount > treasury[SCAddress].tokenTreasury[tokenAddress].totalTransferred) {
            treasury[SCAddress].tokenTreasury[tokenAddress].failedReclaimAttemptAmounts.push(amount);
            emit HubTreasuryEvent(msg.sender, "Reclaim request exceeds total transferred", false, address(this),amount,address(0));
            return false;
        }
        if (amount > availableToReclaim) {
            treasury[SCAddress].tokenTreasury[tokenAddress].bouncedReclaimAmounts.push(amount);
            amount = availableToReclaim - DUST;
            emit HubTreasuryEvent(msg.sender, "Reclaim request bounce, too high", false, address(this),amount,address(0));
            return false;
        }
        // if this fails, whole thing will revert, but the idea is if we passed
        // the above checks, than the corresponding state in the spoke should match.
        // In other words a revert should never happen if we get to this point.
        // if it does there is a state mismatch that the web manager will have to
        // warn about for manual reconciliation.
        // eth logs on chain should group msg.sender so when reclaim succeeds the message
        // will follow this event message herein 'request submitted'.  If however,
        // the transfer fails due to rejection at the spoke,
        // the below log entry will never be entered.
        IElasticTreasurySpoke(SCAddress).treasuryReclaim(tokenAddress, amount);
        treasury[SCAddress].tokenTreasury[tokenAddress].totalReclaimed += amount;
        treasury[SCAddress].tokenTreasury[tokenAddress].totalTimesReclaimed++;
        emit HubTreasuryEvent(msg.sender, "Reclaim TOKEN request submitted to SPOKE", true,SCAddress,amount,tokenAddress);
        return true;
    }

    function treasuryReclaimRequestETH(address payable SCAddress, uint256 amount) external onlyTreas returns (bool) {
        uint256 availableToReclaim = treasury[SCAddress].ethTreasury.totalTransferred - treasury[SCAddress].ethTreasury.totalReclaimed;
        if (amount > treasury[SCAddress].ethTreasury.totalTransferred) {
            treasury[SCAddress].ethTreasury.failedReclaimAttemptAmounts.push(amount);
            emit HubTreasuryEvent(msg.sender, "ETH Reclaim exceeds total transferred", false,SCAddress,amount,address(0));
            return false;
        }
        if (amount > availableToReclaim) {
            treasury[SCAddress].ethTreasury.bouncedReclaimAmounts.push(amount);
            amount = availableToReclaim - DUST;
            emit HubTreasuryEvent(msg.sender, "ETH Reclaim request bounce, too high", false,SCAddress,amount,address(0));
            return false;
        }
        IElasticTreasurySpoke(SCAddress).treasuryReclaimETH(amount);
        treasury[SCAddress].ethTreasury.totalReclaimed += amount;
        treasury[SCAddress].ethTreasury.totalTimesReclaimed++;
        emit HubTreasuryEvent(msg.sender, "ETH reclaim request submitted", true,SCAddress,amount,address(0));
        return true;
    }

    // PURCHASERS on the SALES contract or any other contract which acts as its own HUB
    // should not  accidently get ETH sent to this contract unless the child implements a receive()
    // or fallback or other payable - NOT a good idea (except buy and other planned custom methods) !
    // There should be no way to receive ETH (or tokens if it were possible) outside of SALES or other means
    // Sales contract has its own payable for example after a purchase is verified by whitelist etc ...
    // function customReceiveETH internal virtual payable {  do NOT implement

    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

  //  VIEW GETTERS

    struct TokenTreasuryView {
        address token;
        SingleCoinTreasuryState state;
    }

    struct SpokeTreasuryView {
        address spoke;
        string label;
        SingleCoinTreasuryState ethState;
        TokenTreasuryView[] tokenStates;
    }
    
    function getAllSpokeTreasuries() external view returns (SpokeTreasuryView[] memory) {
        uint256 len = treasuryKeys.length;
        SpokeTreasuryView[] memory result = new SpokeTreasuryView[](len);
        for (uint256 i = 0; i < len; i++) {
            address spoke = treasuryKeys[i];
            AllCoinTreasury storage coinTreasury = treasury[spoke];
            uint256 tokenCount = coinTreasury.tokenTreasuryKeys.length;
            TokenTreasuryView[] memory tokenViews = new TokenTreasuryView[](tokenCount);
            for (uint256 j = 0; j < tokenCount; j++) {
                address token = coinTreasury.tokenTreasuryKeys[j];
                SingleCoinTreasuryState storage tokenState = coinTreasury.tokenTreasury[token];
                tokenViews[j] = TokenTreasuryView({
                    token: token,
                    state: tokenState
                });
            }
            result[i] = SpokeTreasuryView({
                spoke: spoke,
                label: coinTreasury.label,
                ethState: coinTreasury.ethTreasury,
                tokenStates: tokenViews
            });
        }
        return result;
    }



    function getAllCoinSpokeTreasury(address spokeAddress) external view returns (TokenTreasuryView[] memory) {
        AllCoinTreasury storage coinTreasury = treasury[spokeAddress];
        uint256 tokenCount = coinTreasury.tokenTreasuryKeys.length;
        TokenTreasuryView[] memory tokenViews = new TokenTreasuryView[](tokenCount);
        for (uint256 i = 0; i < tokenCount; i++) {
            address token = coinTreasury.tokenTreasuryKeys[i];
            SingleCoinTreasuryState storage tokenState = coinTreasury.tokenTreasury[token];
            tokenViews[i] = TokenTreasuryView({
                token: token,
                state: tokenState
            });
        }
        return tokenViews;
    }

   
        // only HUBS can receive ETH from some remote source (e.g. launchpad escrow contract)
        receive() external payable {
            require(msg.value > 0, "Zero ETH not allowed");
            emit HubExternalReceive(
                msg.sender,     // the immediate caller (e.g. launchpad escrow contract)
                tx.origin,      // the original EOA that started the transaction (e.g. the user)
                msg.value,
                block.number,
                gasleft()
            );
        }

}

// SPDX-License-Identifier: Copyright 2025
// OFFICIAL DEL NORTE NETWORK COMPONENT
// Designed and coded by: Ken Silverman
// Compiled by: Maleeha Naveed May 5th, 2025
pragma solidity 0.8.29;
import "../interfaces/IController.sol";
import "../interfaces/IElasticTreasuryHub.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./Recoverable.sol";
/// @title ElasticTreasurySpoke
/// @notice Spoke contract for ElasticTreasuryHub
/// @author Ken Silverman
abstract contract ElasticTreasurySpoke {
    
    using SafeERC20 for IERC20;

    address public immutable controller;

    event SpokeReceivedEth(address sender, uint256 amount);
    event SpokeReceivedTokens(address sender, uint256 amount, address tokenSCAddress);
    event SpokeReclaimEthEvent(address origin, address hubContract, string msg, uint256 amount);
    event SpokeReclaimTokensEvent(address origin, address hubContract, address tokenAddress, string msg, uint256 amount);

    address public immutable hubTokenAddress;

    struct SpokeTreasuryEntry {
        uint256 totalReceived;
        uint256 totalReclaimed;
    }


    mapping(address => SpokeTreasuryEntry) public spokeTreasury; // tokenAddress => SpokeTreasuryEntry
    SpokeTreasuryEntry public spokeTreasuryETH;                   // ETH treasury entry explicitly

    // Controller already has an initial admin, so do not add any more here.
    constructor(address _controller, address _hubTokenAddress, string memory contractName)  {
        controller = _controller;
        IController(controller).init(address(this), contractName);
        hubTokenAddress = _hubTokenAddress;
    }


    function treasuryReceive(address tokenAddress, uint256 amount) external {
        require(msg.sender == hubTokenAddress, "sender must be HUB");
        spokeTreasury[tokenAddress].totalReceived += amount;
        // explicitly tracks ERC20 tokens received from treasuryTransfer
    }

    // ETH transfers automatically trigger receive() only if no data is sent.
    // Here, we're explicitly defining a method (treasuryReceiveETH)
    // that's explicitly called by the hub to transfer ETH and record this separately
    //  treasury-related ETH separately from ONE CALL to THIS METHOD. NO PRIOR TRANSFER!
    function treasuryReceiveETH() external payable {  // ⇐ MUST DIRECTLY RECEIVE NOW
        require(msg.sender == hubTokenAddress,"sender must be HUB");
        // confirm amount actually equals msg.value
        spokeTreasuryETH.totalReceived += msg.value;
        emit SpokeReceivedEth(msg.sender,msg.value);
    }

    // DO NOT USE ⇒ receive() external payable {   // NO NO NO NO receive method! Do NOT allow incoming ETH
    //    emit SpokeReceivedEth(msg.sender,msg.value);  // except by treasRcvETH
    // }

     // ANY address that this contract has deployed as its HUB is 100% trusted.
    // because caller must be hub and HUB is only accessible by TREAS.
    function treasuryReclaim(address tokenAddress, uint256 amount) external returns (bool) {
        require(spokeTreasury[tokenAddress].totalReceived >= spokeTreasury[tokenAddress].totalReclaimed + amount, "Low balance to reclaim on");
        require(hubTokenAddress == msg.sender);
        spokeTreasury[tokenAddress].totalReclaimed += amount;
        IERC20(tokenAddress).safeTransfer(msg.sender, amount);
        IElasticTreasuryHub(msg.sender).treasuryReceiveReclaimedTokens(tokenAddress,amount);
        emit SpokeReclaimTokensEvent(tx.origin, msg.sender, tokenAddress, "Spoke sent Reclaim Tokens back to HUB", amount);
        return true;
    }

    // msg.sender must be the HUB contract address here.  For safety, verify that.
    // no officialSmartContract entity is required here, HUB is 100% trusted as caller.
    // because HUB can only be called by TREAS.
    function treasuryReclaimETH(uint256 amount) external  {
        // avoid underflow and overflow
        require(spokeTreasuryETH.totalReceived >= spokeTreasuryETH.totalReclaimed + amount, "Low balance to reclaim on");
        require(hubTokenAddress == msg.sender);
        spokeTreasuryETH.totalReclaimed += amount;
        IElasticTreasuryHub(payable(msg.sender)).treasuryReceiveReclaimedETH{value : amount}(); // ⇐MAKES TRANSFER
        emit SpokeReclaimEthEvent(tx.origin, msg.sender, "Spoke sent Reclaim ETH back to HUB", amount);
    }
}

// SPDX-License-Identifier: Unlicensed
// Copyright 2025 US Fintech LLC and Del Norte Holdings.
// 
// Permission to use, copy, modify, or distribute this software is strictly prohibited
// without prior written consent from either copyright holders.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE,
// ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// OFFICIAL DEL NORTE NETWORK COMPONENT
// PeerTreasury is a contract that allows for the transfer of ETH and ERC20 tokens between different contracts.
// Designed by Ken Silverman as part of his ElasticTreasury (HUB and SPOKE), PeerTreasury and Controller model.  
// This deployment is for Trueviewchain Inc. a Panama entity and Del Norte El Salvador S.A  a subsidiary of Del Norte Holdings, Delaware USA.  
// Permission to change metadata stored on blockchain explorers and elsewhere granted to Del Norte Holdings, DE only.
// Compilation help from Maleeha Naveed. Deployed by Maleeha Naveed on behalf of Del Norte. May 5th, 2025
pragma solidity 0.8.29;

import "../interfaces/IController.sol";
import "../interfaces/IElasticTreasuryHub.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./ElasticTreasurySpoke.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

// Compiled by Maleeha Naveed. May 5th, 2025
// PeerTreasury is a contract that allows for the transfer of ETH and ERC20 tokens between different contracts.
/// @author Ken Silverman
contract PeerTreasury {

    using SafeERC20 for IERC20;
    event PeerTreasuryReceivedETH(address indexed sender, uint256 amount);
    event PeerTreasuryReceivedTokens(address indexed sender, address indexed token, uint256 amount);
    event PeerTreasuryTransferredETH(address indexed to, uint256 amount);
    event PeerTreasuryTransferredTokens(address indexed to, address indexed token, uint256 amount);

    struct TreasuryEntry {
        uint256 totalReceived;
        uint256 totalWithdrawn;
    }

    address public immutable peerTreasuryController;

    mapping(address => TreasuryEntry) private tokenPeerTreasury;
    address[] internal knownTokens; // <-- Needed for enumeration

    TreasuryEntry private ethPeerTreasury;

    modifier onlyTreasuryAdmin() {
        require(
            IController(peerTreasuryController).isOfficialDoubleEntity("TreasuryAdmin", msg.sender, "SmartContract", msg.sender, false),
            "Unauthorized"
        );
        _;
    }

    constructor(address _controller) {
        peerTreasuryController = _controller;
    }

    /// @notice Receive ETH from any source and track it
    function peerTreasuryReceiveETH() virtual external payable {
        require(msg.value > 0, "No ETH sent");
        require(IController(peerTreasuryController).isOfficialEntity("SmartContract", msg.sender), "Sender is not an official SmartContract");
        ethPeerTreasury.totalReceived += msg.value;
        emit PeerTreasuryReceivedETH(msg.sender, msg.value);
    }

    /// @notice Transfer ETH to another peer contract (OfficialEntity SmartContract)
    function peerTreasuryTransferETH(address payable to, uint256 amount) virtual public onlyTreasuryAdmin {
        require(address(this).balance >= amount, "Insufficient contract ETH balance");
        require(IController(peerTreasuryController).isOfficialEntity("SmartContract", to), "Recipient not an official SmartContract");

        ethPeerTreasury.totalWithdrawn += amount;
        PeerTreasury(to).peerTreasuryReceiveETH{value: amount}();
        emit PeerTreasuryTransferredETH(to, amount);
    }

    /// @notice Receive ERC20 tokens and track source
    function peerTreasuryReceiveTokens(address token, uint256 amount) virtual external {
        require(amount > 0, "Zero amount");
        require(IController(peerTreasuryController).isOfficialEntity("SmartContract", msg.sender), "Sender not official SC");
        IERC20(token).safeTransferFrom(msg.sender, address(this), amount);

        // Track the token if it's the first time we're seeing it
        if (tokenPeerTreasury[token].totalReceived == 0 && tokenPeerTreasury[token].totalWithdrawn == 0) {
            knownTokens.push(token);
        }

        tokenPeerTreasury[token].totalReceived += amount;
        emit PeerTreasuryReceivedTokens(msg.sender, token, amount);
    }

    /// @notice Transfer ERC20 tokens to another peer contract (OfficialEntity SmartContract)
    function peerTreasuryTransferTokens(address token, address to, uint256 amount) virtual public onlyTreasuryAdmin {
        require(IERC20(token).balanceOf(address(this)) >= amount, "Insuffic token bal");
        require(IController(peerTreasuryController).isOfficialEntity("SmartContract", to), "recipient not official SC");
        tokenPeerTreasury[token].totalWithdrawn += amount;
        require(IERC20(token).approve(to, amount), "Approve failed");
        PeerTreasury(to).peerTreasuryReceiveTokens(token, amount);
        emit PeerTreasuryTransferredTokens(to, token, amount);
    }

    /// @notice Check ETH available (total received - total withdrawn)
    /// @return The signed balance (can be negative if more was withdrawn than received - which is OK!)
    /// obviously the first lateral movement will be a withdrawal from a peerTreasury source
    function peerETHAvailable() external view returns (int256) {
        // Convert to int256 before subtraction to allow negative results
        return int256(ethPeerTreasury.totalReceived) - int256(ethPeerTreasury.totalWithdrawn);
    }

    /// @notice Check token available (total received - total withdrawn)
    /// @return The signed balance (can be negative if more was withdrawn than received)
    /// obviously the first lateral movement will be a withdrawal from a peerTreasury source
    function peerTokenAvailable(address token) external view returns (int256) {
        TreasuryEntry storage e = tokenPeerTreasury[token];
        // Convert to int256 before subtraction to allow negative results
        return int256(e.totalReceived) - int256(e.totalWithdrawn);
    }

    struct TreasurySnapshot {
        address token;
        uint256 totalReceived;
        uint256 totalWithdrawn;
    }


    /// @notice Return all known peer treasury token entries
   function getPeerTreasuries() external view returns (TreasurySnapshot[] memory) {
        uint256 len = knownTokens.length;
        TreasurySnapshot[] memory result = new TreasurySnapshot[](len);
        for (uint256 i = 0; i < len; i++) {
            address token = knownTokens[i];
            TreasuryEntry storage entry = tokenPeerTreasury[token];

            result[i] = TreasurySnapshot({
                token: token,
                totalReceived: entry.totalReceived,
                totalWithdrawn: entry.totalWithdrawn
            });
        }
        return result;
    }

    /// @notice Return individual peer treasury entry for a token
    function getPeerTreasury(address token) external view returns (uint256 received, uint256 withdrawn) {
        TreasuryEntry storage entry = tokenPeerTreasury[token];
        return (entry.totalReceived, entry.totalWithdrawn);
    }

    /// @notice Return ETH treasury data
    function getPeerTreasuryETH() external view returns (uint256 received, uint256 withdrawn) {
        return (ethPeerTreasury.totalReceived, ethPeerTreasury.totalWithdrawn);
    }
}

// SPDX-License-Identifier: CLOSED LICENSE COPYRIGHT 2025
// OFFICAL DEL NORTE NETWORK COMPONENT
// Designed By Ken Silverman for Del Norte.  Implementation help from Tony Sparks
// Compilation help from Maleeha Naveed. May 5th, 2025

pragma solidity 0.8.29;


import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../interfaces/IController.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";


/// @title ReversibleRecoveryBase
/// @notice Base contract tracking / reversing accidental ETH/ERC20 transfers with admin authorization
abstract contract Recoverable {

    using SafeERC20 for IERC20;

    // STRUCTS


    struct ReversibleUserBalance {
        uint256 totalReceivedThatIsReversible;
        uint256 totalReversed;
        uint256 totalReversals;
    }


    // -----------------------------
    // STORAGE
    // -----------------------------


    address public controller;  // Address of the Controller contract (must implement IController)
    uint256 public ADMIN_FEE_FIXED = 10 ** 17; // 0.1 ETH
    uint256 public totalAdminFeesCollected;


    mapping(address => ReversibleUserBalance) public reversibleEthBalances;
    mapping(address => mapping(address => ReversibleUserBalance)) public reversibleTokenBalances;


    // -----------------------------
    // EVENTS
    // -----------------------------
    event TransferReversed(address indexed user, uint256 refundAmount, address tokenSC, uint256 adminFee);
    event AdminFeeUpdated(uint256 newFee);
    event ControllerChanged(address newController);


     modifier onlyBTExecutives() {
        bool temp = IController(controller).isOfficialEntity("TreasuryAdmin", msg.sender) ||
                    IController(controller).isOfficialEntity("SmartContract", msg.sender);
        require(temp, "Unauthorized access");
        _;  // run the code block referencing this modifier
    }


    // -----------------------------
    // CONSTRUCTOR
    // -----------------------------
    constructor(address _controller) {
        require(_controller != address(0), "Controller address cannot be zero");
        controller = _controller;
    }


    // -----------------------------
    // EXTERNAL METHODS
    // -----------------------------
    function manualUpdateReversibleBalanceETH(address userAddress, uint256 amount)
        external onlyBTExecutives  {
        reversibleEthBalances[userAddress].totalReceivedThatIsReversible += amount;
    }




    function manualUpdateReversibleBalanceERC20(address userAddress, uint256 amount, address tokenSC)
        external onlyBTExecutives {
        reversibleTokenBalances[tokenSC][userAddress].totalReceivedThatIsReversible += amount;
    }


    function reverseAccidentalETH() external payable  {
        require(msg.value >= ADMIN_FEE_FIXED, "Insufficient admin fee");
        require(!IController(controller).isOfficialEntity("Registrar", msg.sender),
            "Registrars/launchpads may not be allowed to reverse any amounts they send.");
        ReversibleUserBalance storage balance = reversibleEthBalances[msg.sender];
        uint256 refundAmount = balance.totalReceivedThatIsReversible - balance.totalReversed;
        require(refundAmount > 0, "Nothing to refund");
        // Update state before external call
        balance.totalReversed += refundAmount;
        balance.totalReversals += 1;
        totalAdminFeesCollected += msg.value;
        // Perform the external call
        (bool success, ) = msg.sender.call{value: refundAmount}("");
        require(success, "Ether transfer failed");
        emit TransferReversed(msg.sender, refundAmount, address(0), msg.value);
    }



    function reverseAccidentalERC20(address tokenSC) external payable {
        require(msg.value >= ADMIN_FEE_FIXED, "Insufficient admin fee");
        require(!IController(controller).isOfficialEntity("Registrar", msg.sender), "Registrars/launchpads may not reverse any amounts they send.");
        ReversibleUserBalance storage balance = reversibleTokenBalances[tokenSC][msg.sender];
        uint256 refundAmount = balance.totalReceivedThatIsReversible - balance.totalReversed;
        require(refundAmount > 0, "Nothing to refund");
        // Update state before external call
        balance.totalReversed += refundAmount;
        balance.totalReversals += 1;
        totalAdminFeesCollected += msg.value;
        // Perform the external call
        IERC20(tokenSC).safeTransfer(msg.sender, refundAmount);
        emit TransferReversed(msg.sender, refundAmount, tokenSC, msg.value);
  }


    function changeAdminFee(uint256 newFee) external onlyBTExecutives {
        ADMIN_FEE_FIXED = newFee;
        emit AdminFeeUpdated(newFee);
    }


   function changeController(address remote) internal {
        controller = remote;
        emit ControllerChanged(remote);
   }
}

// SPDX-License-Identifier: UNLICENSED
// Copyright 2025 US Fintech LLC and DelNorte Holdings.
// 
// Permission to use, copy, modify, or distribute this software is strictly prohibited
// without prior written consent from both copyright holders.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE,
// ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// OFFICIAL DEL NORTE NETWORK COMPONENT 
// Provides immediate membership access to platform at different levels. 
// Required Non US or accredited US registration to swap for DTV token. Registration available within 180 days per terms.delnorte.io . 
// Minimally tesed Conroller Tree for world-wide government administration of, well, anything, including property ownership.
// Designed by Ken Silverman as part of his ElasticTreasury (HUB and SPOKE), PeerTreasury and Controller model. 
// @author Ken Silverman
// This deployment is for Del Norte Holdings, Delaware and US Fintech, LLC NY.  
// Permission to change metadata stored on blockchain explorers and elsewhere granted to:
// Del Norte Holdings, DE only and/or US Fintech, LLC NY independently
pragma solidity 0.8.29;

interface IController {
    struct OfficialEntityStruct {
        string fullNameOfEntityOrLabel;
        string nationalIdOfEntity;
        address pubAddress;
        uint256 blockNumber;
        uint256 blockTimestamp;
        bool active;
    }

    function addOfficialEntity(string memory, address, string memory, string memory) external returns (bool);
    function removeOfficialEntity(string memory, address) external returns (bool);
    function isOfficialEntity(string memory, address) external view returns (bool);
    function isOfficialEntityFast(bytes32, address) external view returns (bool);
    function isOfficialDoubleEntity(string calldata, address, string calldata, address, bool) external view returns (bool);
    function isOfficialDoubleEntityFast(bytes32, address, bytes32, address, bool) external view returns (bool);
    function isOfficialTripleEntityFast(bytes32, address, bytes32, address, bytes32, address, bool) external view returns (bool);
    function isOfficialTripleEntity(string calldata, address, string calldata, address, string calldata, address, bool) external view returns (bool);
    function isOfficialQuadrupleEntityFast(bytes32, address,  bytes32, address, bytes32, address, bytes32, address, bool) external view returns (bool);
    function getOfficialEntity(string calldata, address) external view returns (OfficialEntityStruct memory);
    function getAllOfficialEntities(string calldata) external view returns (OfficialEntityStruct[] memory);
    function init(address, string calldata) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.29;

interface IElasticTreasuryHub {
   function withdrawETHToPerson(address personAddress, uint256 amt, string calldata note) external;
   function withdrawTokensToPerson(address personAddress, uint256 amt, address tokenSCAddress, string calldata note) external;
   function treasuryTransfer(address SCAddress, string calldata allCoinLabel, address tokenAddress, string calldata tokenLabel, uint256 amount) external returns (bool);
   function treasuryTransferETH(address payable SCAddress, string calldata allCoinLabel, string calldata ethLabel, uint256 amount) external returns (bool);
   function treasuryReceiveReclaimedETH() external payable returns (bool);
   function treasuryReceiveReclaimedTokens(address tokenAddress, uint256 amt) external returns (bool);
   function treasuryReclaimRequest(address SCAddress, address tokenAddress, uint256 amount) external returns (bool);
   function treasuryReclaimRequestETH(address payable SCAddress, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: Copyright 2025
// OFFICIAL DEL NORTE NETWORK COMPONENT
// Designed and coded by: Ken Silverman
//   implementation help by Tony Sparks
pragma solidity 0.8.29;

interface IElasticTreasurySpoke {
    function treasuryReceive(address tokenAddress, uint256 amount) external;
    function treasuryReceiveETH() external payable;
    function treasuryReclaim(address tokenAddress, uint256 amount) external returns (bool);
    function treasuryReclaimETH(uint256 amount) external;
}

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        "evm.deployedBytecode",
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• No Contract Security Audit Submitted- Submit Audit Here

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00000000000000000000000058d3c86da030b232de0acd06fad21b429a737c50000000000000000000000000d47e4431443b9fc2a2f4c77f315547a5a605bcca

-----Decoded View---------------
Arg [0] : _controller (address): 0x58D3C86dA030B232dE0ACd06FAd21b429A737C50
Arg [1] : initialAdmin (address): 0xd47e4431443b9FC2A2F4C77f315547A5a605bcCa

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000058d3c86da030b232de0acd06fad21b429a737c50
Arg [1] : 000000000000000000000000d47e4431443b9fc2a2f4c77f315547a5a605bcca