ETH Price: $3,085.97 (+0.36%)
Gas: 25 Gwei

Contract

0x826180541412D574cf1336d22c0C0a287822678A
 

Overview

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0 ETH

Eth Value

$0.00

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Private Name Tags

TokenTracker

Chainflip (FLIP) (@$3.96)

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Transaction Hash
Method
Block
From
To
Value
Transfer196629572024-04-15 19:20:473 mins ago1713208847IN
Chainflip: FLIP Token
0 ETH0.0007592325.66361862
Approve196627722024-04-15 18:43:2341 mins ago1713206603IN
Chainflip: FLIP Token
0 ETH0.0010857723.30185069
Approve196626932024-04-15 18:27:3557 mins ago1713205655IN
Chainflip: FLIP Token
0 ETH0.0012173626.28171278
Approve196624072024-04-15 17:30:111 hr ago1713202211IN
Chainflip: FLIP Token
0 ETH0.0009800521.15285929
Transfer196623782024-04-15 17:24:232 hrs ago1713201863IN
Chainflip: FLIP Token
0 ETH0.0005218917.65549972
Transfer196621972024-04-15 16:47:592 hrs ago1713199679IN
Chainflip: FLIP Token
0 ETH0.0006443421.79801028
Transfer196621062024-04-15 16:29:112 hrs ago1713198551IN
Chainflip: FLIP Token
0 ETH0.0008845318.9570696
Transfer196618532024-04-15 15:38:233 hrs ago1713195503IN
Chainflip: FLIP Token
0 ETH0.001287925.02733712
Transfer196616512024-04-15 14:57:594 hrs ago1713193079IN
Chainflip: FLIP Token
0 ETH0.0017929634.84199484
Approve196616462024-04-15 14:56:594 hrs ago1713193019IN
Chainflip: FLIP Token
0 ETH0.0013353128.84288666
Transfer196616032024-04-15 14:48:234 hrs ago1713192503IN
Chainflip: FLIP Token
0 ETH0.0012725527.27300408
Approve196614522024-04-15 14:17:595 hrs ago1713190679IN
Chainflip: FLIP Token
0 ETH0.0010431722.52102235
Approve196613492024-04-15 13:56:595 hrs ago1713189419IN
Chainflip: FLIP Token
0 ETH0.0009452920.41329467
Approve196611892024-04-15 13:24:475 hrs ago1713187487IN
Chainflip: FLIP Token
0 ETH0.0010002221.59373768
Approve196608422024-04-15 12:14:477 hrs ago1713183287IN
Chainflip: FLIP Token
0 ETH0.0006989415
Transfer196605482024-04-15 11:15:478 hrs ago1713179747IN
Chainflip: FLIP Token
0 ETH0.0003968213.42445035
Transfer196604772024-04-15 11:01:358 hrs ago1713178895IN
Chainflip: FLIP Token
0 ETH0.0003969813.42445035
Transfer196602552024-04-15 10:16:359 hrs ago1713176195IN
Chainflip: FLIP Token
0 ETH0.0010081819.58698085
Transfer196602482024-04-15 10:15:119 hrs ago1713176111IN
Chainflip: FLIP Token
0 ETH0.0006776819.7161246
Approve196602232024-04-15 10:09:599 hrs ago1713175799IN
Chainflip: FLIP Token
0 ETH0.0008736718.86182605
Transfer196601912024-04-15 10:03:119 hrs ago1713175391IN
Chainflip: FLIP Token
0 ETH0.0008880325.83605732
Transfer196601552024-04-15 9:55:479 hrs ago1713174947IN
Chainflip: FLIP Token
0 ETH0.0006815514.59932869
Approve196599632024-04-15 9:16:4710 hrs ago1713172607IN
Chainflip: FLIP Token
0 ETH0.0003957615
Transfer196599612024-04-15 9:16:2310 hrs ago1713172583IN
Chainflip: FLIP Token
0 ETH0.0006296712.23625386
Approve196599592024-04-15 9:15:5910 hrs ago1713172559IN
Chainflip: FLIP Token
0 ETH0.0003957615
View all transactions

Latest 3 internal transactions

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Parent Transaction Hash Block From To Value
192616572024-02-19 12:03:4756 days ago1708344227
Chainflip: FLIP Token
0.17660921 ETH
190917122024-01-26 15:36:1180 days ago1706283371
Chainflip: FLIP Token
0.005 ETH
182770812023-10-04 12:13:23194 days ago1696421603  Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
FLIP

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 800 runs

Other Settings:
paris EvmVersion, MIT license
File 1 of 8 : FLIP.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "ERC20.sol";
import "IFLIP.sol";
import "Shared.sol";

/**
 * @title    FLIP contract
 * @notice   The FLIP utility token which is used in the StateChain.
 */
contract FLIP is ERC20, IFLIP, Shared {
    address private issuer;

    constructor(
        uint256 flipTotalSupply,
        uint256 numGenesisValidators,
        uint256 genesisStake,
        address receiverGenesisValidatorFlip, // StateChainGateway
        address receiverGenesisFlip,
        address genesisIssuer //StateChainGateway
    )
        ERC20("Chainflip", "FLIP")
        nzAddr(receiverGenesisValidatorFlip)
        nzAddr(receiverGenesisFlip)
        nzUint(flipTotalSupply)
        nzAddr(genesisIssuer)
    {
        uint256 genesisValidatorFlip = numGenesisValidators * genesisStake;
        _mint(receiverGenesisValidatorFlip, genesisValidatorFlip);
        _mint(receiverGenesisFlip, flipTotalSupply - genesisValidatorFlip);
        issuer = genesisIssuer;
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                  State-changing functions                //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /**
     * @notice Mint FLIP tokens to an account. This is controlled via an issuer
     *         controlled by the StateChain to adjust the supply of FLIP tokens.
     * @dev    The _mint function checks for zero address. We do not check for
     *         zero amount because there is no real reason to revert and we want
     *         to minimise reversion of State Chain calls
     * @param account   Account to receive the newly minted tokens
     * @param amount    Amount of tokens to mint
     */
    function mint(address account, uint amount) external override onlyIssuer {
        _mint(account, amount);
    }

    /**
     * @notice Mint FLIP tokens to an account. This is controlled via an issuer
     *         controlled by the StateChain to adjust the supply of FLIP tokens.
     * @dev    The _burn function checks for zero address. We do not check for
     *         zero amount because there is no real reason to revert and we want
     *         to minimise reversion of State Chain calls.
     * @param account   Account to burn the tokens from
     * @param amount    Amount of tokens to burn
     */
    function burn(address account, uint amount) external override onlyIssuer {
        _burn(account, amount);
    }

    /**
     * @notice Update the issuer address. This is to be controlled via an issuer
     *         controlled by the StateChain.
     * @param newIssuer   Account that can mint and burn FLIP tokens.
     */
    function updateIssuer(address newIssuer) external override nzAddr(issuer) onlyIssuer {
        emit IssuerUpdated(issuer, newIssuer);
        issuer = newIssuer;
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                  Non-state-changing functions            //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @dev Get the issuer address.
    function getIssuer() external view override returns (address) {
        return issuer;
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                        Modifiers                         //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @dev    Check that the caller is the token issuer.
    modifier onlyIssuer() {
        require(msg.sender == issuer, "FLIP: not issuer");
        _;
    }
}

File 3 of 8 : ERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "IERC20.sol";
import "IERC20Metadata.sol";
import "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].
 *
 * 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}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * 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 value {ERC20} uses, unless this function is
     * 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 {}
}

File 4 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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);
}

File 5 of 8 : IERC20Metadata.sol
// 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);
}

File 6 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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;
    }
}

File 7 of 8 : IFLIP.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "IERC20.sol";

/**
 * @title    FLIP interface for the FLIP utility token
 */
interface IFLIP is IERC20 {
    event IssuerUpdated(address oldIssuer, address newIssuer);

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                  State-changing functions                //
    //                                                          //
    //////////////////////////////////////////////////////////////

    function mint(address account, uint amount) external;

    function burn(address account, uint amount) external;

    function updateIssuer(address newIssuer) external;

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                  Non-state-changing functions            //
    //                                                          //
    //////////////////////////////////////////////////////////////

    function getIssuer() external view returns (address);
}

File 8 of 8 : Shared.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "IShared.sol";

/**
 * @title    Shared contract
 * @notice   Holds constants and modifiers that are used in multiple contracts
 * @dev      It would be nice if this could be a library, but modifiers can't be exported :(
 */

abstract contract Shared is IShared {
    /// @dev The address used to indicate whether transfer should send native or a token
    address internal constant _NATIVE_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address internal constant _ZERO_ADDR = address(0);
    bytes32 internal constant _NULL = "";
    uint256 internal constant _E_18 = 1e18;

    /// @dev    Checks that a uint isn't zero/empty
    modifier nzUint(uint256 u) {
        require(u != 0, "Shared: uint input is empty");
        _;
    }

    /// @dev    Checks that an address isn't zero/empty
    modifier nzAddr(address a) {
        require(a != _ZERO_ADDR, "Shared: address input is empty");
        _;
    }

    /// @dev    Checks that a bytes32 isn't zero/empty
    modifier nzBytes32(bytes32 b) {
        require(b != _NULL, "Shared: bytes32 input is empty");
        _;
    }

    /// @dev    Checks that the pubKeyX is populated
    modifier nzKey(Key memory key) {
        require(key.pubKeyX != 0, "Shared: pubKeyX is empty");
        _;
    }
}

File 9 of 8 : IShared.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "IERC20.sol";

/**
 * @title    Shared interface
 * @notice   Holds structs needed by other interfaces
 */
interface IShared {
    /**
     * @dev  SchnorrSECP256K1 requires that each key has a public key part (x coordinate),
     *       a parity for the y coordinate (0 if the y ordinate of the public key is even, 1
     *       if it's odd)
     */
    struct Key {
        uint256 pubKeyX;
        uint8 pubKeyYParity;
    }

    /**
     * @dev  Contains a signature and the nonce used to create it. Also the recovered address
     *       to check that the signature is valid
     */
    struct SigData {
        uint256 sig;
        uint256 nonce;
        address kTimesGAddress;
    }

    /**
     * @param token The address of the token to be transferred
     * @param recipient The address of the recipient of the transfer
     * @param amount    The amount to transfer, in wei (uint)
     */
    struct TransferParams {
        address token;
        address payable recipient;
        uint256 amount;
    }

    /**
     * @param swapID    The unique identifier for this swap (bytes32), used for create2
     * @param token     The token to be transferred
     */
    struct DeployFetchParams {
        bytes32 swapID;
        address token;
    }

    /**
     * @param fetchContract   The address of the deployed Deposit contract
     * @param token     The token to be transferred
     */
    struct FetchParams {
        address payable fetchContract;
        address token;
    }
}

Settings
{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "libraries": {
    "FLIP.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"uint256","name":"flipTotalSupply","type":"uint256"},{"internalType":"uint256","name":"numGenesisValidators","type":"uint256"},{"internalType":"uint256","name":"genesisStake","type":"uint256"},{"internalType":"address","name":"receiverGenesisValidatorFlip","type":"address"},{"internalType":"address","name":"receiverGenesisFlip","type":"address"},{"internalType":"address","name":"genesisIssuer","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldIssuer","type":"address"},{"indexed":false,"internalType":"address","name":"newIssuer","type":"address"}],"name":"IssuerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getIssuer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newIssuer","type":"address"}],"name":"updateIssuer","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000004a723dc6b40b8a9a000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000000000000000003635c9adc5dea000000000000000000000000000006995ab7c4d7f4b03f467cf4c8e920427d9621dbd00000000000000000000000038a4bcc04f5136e6408589a440f495d7ad0f34db0000000000000000000000006995ab7c4d7f4b03f467cf4c8e920427d9621dbd

-----Decoded View---------------
Arg [0] : flipTotalSupply (uint256): 90000000000000000000000000
Arg [1] : numGenesisValidators (uint256): 3
Arg [2] : genesisStake (uint256): 1000000000000000000000
Arg [3] : receiverGenesisValidatorFlip (address): 0x6995Ab7c4D7F4B03f467Cf4c8E920427d9621DBd
Arg [4] : receiverGenesisFlip (address): 0x38a4BCC04f5136e6408589A440F495D7AD0F34DB
Arg [5] : genesisIssuer (address): 0x6995Ab7c4D7F4B03f467Cf4c8E920427d9621DBd

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000004a723dc6b40b8a9a000000
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [2] : 00000000000000000000000000000000000000000000003635c9adc5dea00000
Arg [3] : 0000000000000000000000006995ab7c4d7f4b03f467cf4c8e920427d9621dbd
Arg [4] : 00000000000000000000000038a4bcc04f5136e6408589a440f495d7ad0f34db
Arg [5] : 0000000000000000000000006995ab7c4d7f4b03f467cf4c8e920427d9621dbd


Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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OVERVIEW

Chainflip is a cross-chain protocol which uses TSS, an independent blockchain, and a purpose-built AMM to facilitate native cross-chain swaps. Chainflip aims to grant users access to native assets not usually found on the same dex, like ETH, DOT, and BTC, at price parity to centralised exchanges.

Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.