Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: GPL-2.0-or-later

pragma solidity ^0.7.6;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol";
import "@openzeppelin/contracts/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";

import "../governance/Governed.sol";

/**
 * @title GraphToken contract
 * @dev This is the implementation of the ERC20 Graph Token.
 * The implementation exposes a Permit() function to allow for a spender to send a signed message
 * and approve funds to a spender following EIP2612 to make integration with other contracts easier.
 *
 * The token is initially owned by the deployer address that can mint tokens to create the initial
 * distribution. For convenience, an initial supply can be passed in the constructor that will be
 * assigned to the deployer.
 *
 * The governor can add the RewardsManager contract to mint indexing rewards.
 *
 */
contract GraphToken is Governed, ERC20, ERC20Burnable {
    using SafeMath for uint256;

    // -- EIP712 --
    // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md#definition-of-domainseparator

    bytes32 private constant DOMAIN_TYPE_HASH =
        keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract,bytes32 salt)"
        );
    bytes32 private constant DOMAIN_NAME_HASH = keccak256("Graph Token");
    bytes32 private constant DOMAIN_VERSION_HASH = keccak256("0");
    bytes32 private constant DOMAIN_SALT =
        0x51f3d585afe6dfeb2af01bba0889a36c1db03beec88c6a4d0c53817069026afa; // Randomly generated salt
    bytes32 private constant PERMIT_TYPEHASH =
        keccak256(
            "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
        );

    // -- State --

    bytes32 private DOMAIN_SEPARATOR;
    mapping(address => bool) private _minters;
    mapping(address => uint256) public nonces;

    // -- Events --

    event MinterAdded(address indexed account);
    event MinterRemoved(address indexed account);

    modifier onlyMinter() {
        require(isMinter(msg.sender), "Only minter can call");
        _;
    }

    /**
     * @dev Graph Token Contract Constructor.
     * @param _initialSupply Initial supply of GRT
     */
    constructor(uint256 _initialSupply) ERC20("Graph Token", "GRT") {
        Governed._initialize(msg.sender);

        // The Governor has the initial supply of tokens
        _mint(msg.sender, _initialSupply);

        // The Governor is the default minter
        _addMinter(msg.sender);

        // EIP-712 domain separator
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                DOMAIN_TYPE_HASH,
                DOMAIN_NAME_HASH,
                DOMAIN_VERSION_HASH,
                _getChainID(),
                address(this),
                DOMAIN_SALT
            )
        );
    }

    /**
     * @dev Approve token allowance by validating a message signed by the holder.
     * @param _owner Address of the token holder
     * @param _spender Address of the approved spender
     * @param _value Amount of tokens to approve the spender
     * @param _deadline Expiration time of the signed permit
     * @param _v Signature version
     * @param _r Signature r value
     * @param _s Signature s value
     */
    function permit(
        address _owner,
        address _spender,
        uint256 _value,
        uint256 _deadline,
        uint8 _v,
        bytes32 _r,
        bytes32 _s
    ) external {
        bytes32 digest = keccak256(
            abi.encodePacked(
                "\x19\x01",
                DOMAIN_SEPARATOR,
                keccak256(
                    abi.encode(PERMIT_TYPEHASH, _owner, _spender, _value, nonces[_owner], _deadline)
                )
            )
        );
        nonces[_owner] = nonces[_owner].add(1);

        address recoveredAddress = ECDSA.recover(digest, abi.encodePacked(_r, _s, _v));
        require(_owner == recoveredAddress, "GRT: invalid permit");
        require(_deadline == 0 || block.timestamp <= _deadline, "GRT: expired permit");

        _approve(_owner, _spender, _value);
    }

    /**
     * @dev Add a new minter.
     * @param _account Address of the minter
     */
    function addMinter(address _account) external onlyGovernor {
        _addMinter(_account);
    }

    /**
     * @dev Remove a minter.
     * @param _account Address of the minter
     */
    function removeMinter(address _account) external onlyGovernor {
        _removeMinter(_account);
    }

    /**
     * @dev Renounce to be a minter.
     */
    function renounceMinter() external {
        _removeMinter(msg.sender);
    }

    /**
     * @dev Mint new tokens.
     * @param _to Address to send the newly minted tokens
     * @param _amount Amount of tokens to mint
     */
    function mint(address _to, uint256 _amount) external onlyMinter {
        _mint(_to, _amount);
    }

    /**
     * @dev Return if the `_account` is a minter or not.
     * @param _account Address to check
     * @return True if the `_account` is minter
     */
    function isMinter(address _account) public view returns (bool) {
        return _minters[_account];
    }

    /**
     * @dev Add a new minter.
     * @param _account Address of the minter
     */
    function _addMinter(address _account) private {
        _minters[_account] = true;
        emit MinterAdded(_account);
    }

    /**
     * @dev Remove a minter.
     * @param _account Address of the minter
     */
    function _removeMinter(address _account) private {
        _minters[_account] = false;
        emit MinterRemoved(_account);
    }

    /**
     * @dev Get the running network chain ID.
     * @return The chain ID
     */
    function _getChainID() private pure returns (uint256) {
        uint256 id;
        assembly {
            id := chainid()
        }
        return id;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.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.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of 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 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual 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 {_setupDecimals} is
     * called.
     *
     * 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 returns (uint8) {
        return _decimals;
    }

    /**
     * @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:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, 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}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), 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}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        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) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(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) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is 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:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, 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:
     *
     * - `to` 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 = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(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);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(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 Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }

    /**
     * @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 to 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 { }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./ERC20.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 {
    using SafeMath for uint256;

    /**
     * @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 {
        uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");

        _approve(account, _msgSender(), decreasedAllowance);
        _burn(account, amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 {
    /**
     * @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) {
        // Check the signature length
        if (signature.length != 65) {
            revert("ECDSA: invalid signature length");
        }

        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // ecrecover takes the signature parameters, and the only way to get them
        // currently is to use assembly.
        // solhint-disable-next-line no-inline-assembly
        assembly {
            r := mload(add(signature, 0x20))
            s := mload(add(signature, 0x40))
            v := byte(0, mload(add(signature, 0x60)))
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // 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 (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): 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.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * replicates the behavior of the
     * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`]
     * JSON-RPC method.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later

pragma solidity ^0.7.6;

/**
 * @title Graph Governance contract
 * @dev All contracts that will be owned by a Governor entity should extend this contract.
 */
abstract contract Governed {
    // -- State --

    /// Address of the governor
    address public governor;
    /// Address of the new governor that is pending acceptance
    address public pendingGovernor;

    // -- Events --

    /// Emitted when a new owner/governor has been set, but is pending acceptance
    event NewPendingOwnership(address indexed from, address indexed to);
    /// Emitted when a new owner/governor has accepted their role
    event NewOwnership(address indexed from, address indexed to);

    /**
     * @dev Check if the caller is the governor.
     */
    modifier onlyGovernor() {
        require(msg.sender == governor, "Only Governor can call");
        _;
    }

    /**
     * @dev Initialize the governor for this contract
     * @param _initGovernor Address of the governor
     */
    function _initialize(address _initGovernor) internal {
        governor = _initGovernor;
    }

    /**
     * @notice Admin function to begin change of governor. The `_newGovernor` must call
     * `acceptOwnership` to finalize the transfer.
     * @param _newGovernor Address of new `governor`
     */
    function transferOwnership(address _newGovernor) external onlyGovernor {
        require(_newGovernor != address(0), "Governor must be set");

        address oldPendingGovernor = pendingGovernor;
        pendingGovernor = _newGovernor;

        emit NewPendingOwnership(oldPendingGovernor, pendingGovernor);
    }

    /**
     * @notice Admin function for pending governor to accept role and update governor.
     * This function must called by the pending governor.
     */
    function acceptOwnership() external {
        address oldPendingGovernor = pendingGovernor;

        require(
            oldPendingGovernor != address(0) && msg.sender == oldPendingGovernor,
            "Caller must be pending governor"
        );

        address oldGovernor = governor;

        governor = oldPendingGovernor;
        pendingGovernor = address(0);

        emit NewOwnership(oldGovernor, governor);
        emit NewPendingOwnership(oldPendingGovernor, pendingGovernor);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"uint256","name":"_initialSupply","type":"uint256"}],"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":true,"internalType":"address","name":"account","type":"address"}],"name":"MinterAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"}],"name":"MinterRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"NewOwnership","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"NewPendingOwnership","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":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"addMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"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":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","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":"governor","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"}],"name":"isMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","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":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingGovernor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"uint256","name":"_deadline","type":"uint256"},{"internalType":"uint8","name":"_v","type":"uint8"},{"internalType":"bytes32","name":"_r","type":"bytes32"},{"internalType":"bytes32","name":"_s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"removeMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceMinter","outputs":[],"stateMutability":"nonpayable","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":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newGovernor","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000000000000000000000204fce5e3e25026110000000

-----Decoded View---------------
Arg [0] : _initialSupply (uint256): 10000000000000000000000000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000204fce5e3e25026110000000