ETH Price: $4,231.22 (+0.67%)

Contract

0x0adA190c81b814548ddC2F6AdC4a689ce7C1FE73
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Token Holdings

More Info

Private Name Tags

TokenTracker

yAxis V2 (YAXIS) ($3.5308)

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Approve235467142025-10-10 10:24:113 days ago1760091851IN
yAxis: YAXIS Token
0 ETH0.000077071.66402232
Approve235143982025-10-05 21:56:478 days ago1759701407IN
yAxis: YAXIS Token
0 ETH0.000006520.14089041
Approve234784552025-09-30 21:20:3513 days ago1759267235IN
yAxis: YAXIS Token
0 ETH0.000034521.42005037
Approve234553092025-09-27 15:43:3516 days ago1758987815IN
yAxis: YAXIS Token
0 ETH0.000062941.35875097
Approve233772882025-09-16 18:01:3527 days ago1758045695IN
yAxis: YAXIS Token
0 ETH0.000098732.13180494
Approve233247682025-09-09 9:53:4734 days ago1757411627IN
yAxis: YAXIS Token
0 ETH0.000018370.75587999
Transfer233066222025-09-06 21:05:2337 days ago1757192723IN
yAxis: YAXIS Token
0 ETH0.000167033.22742137
Approve232946052025-09-05 4:45:2338 days ago1757047523IN
yAxis: YAXIS Token
0 ETH0.000015040.32292446
Approve232539092025-08-30 12:19:2344 days ago1756556363IN
yAxis: YAXIS Token
0 ETH0.000013460.28909772
Approve231359612025-08-14 1:18:3561 days ago1755134315IN
yAxis: YAXIS Token
0 ETH0.000028571.17559939
Approve231358442025-08-14 0:54:5961 days ago1755132899IN
yAxis: YAXIS Token
0 ETH0.000074643.07051409
Approve231283032025-08-12 23:39:3562 days ago1755041975IN
yAxis: YAXIS Token
0 ETH0.000066782.75426238
Approve231156982025-08-11 5:23:5963 days ago1754889839IN
yAxis: YAXIS Token
0 ETH0.000027540.59112707
Transfer230112592025-07-27 15:04:4778 days ago1753628687IN
yAxis: YAXIS Token
0 ETH0.000011330.38218014
Approve229706522025-07-21 22:49:2384 days ago1753138163IN
yAxis: YAXIS Token
0 ETH0.000065592.69831174
Approve229585082025-07-20 6:07:1185 days ago1752991631IN
yAxis: YAXIS Token
0 ETH0.000064472.65235067
Approve229585072025-07-20 6:06:5985 days ago1752991619IN
yAxis: YAXIS Token
0 ETH0.000064172.63986832
Approve229585052025-07-20 6:06:3585 days ago1752991595IN
yAxis: YAXIS Token
0 ETH0.00006332.60409008
Transfer229477292025-07-18 17:57:5987 days ago1752861479IN
yAxis: YAXIS Token
0 ETH0.000172233.66625222
Approve228871332025-07-10 6:57:3595 days ago1752130655IN
yAxis: YAXIS Token
0 ETH0.000022290.91700635
Transfer228141722025-06-30 2:12:35105 days ago1751249555IN
yAxis: YAXIS Token
0 ETH0.000015490.32983361
Approve225213742025-05-20 3:10:23146 days ago1747710623IN
yAxis: YAXIS Token
0 ETH0.000026491.09009299
Approve225212432025-05-20 2:44:11146 days ago1747709051IN
yAxis: YAXIS Token
0 ETH0.000075813.11899543
Approve225138352025-05-19 1:47:47147 days ago1747619267IN
yAxis: YAXIS Token
0 ETH0.000023980.98667923
Approve225073412025-05-18 3:55:23148 days ago1747540523IN
yAxis: YAXIS Token
0 ETH0.000023270.95766525
View all transactions

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Cross-Chain Transactions

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
YaxisToken

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "../vendor/LinkToken/token/LinkERC20.sol";
import "../vendor/LinkToken/ERC677Token.sol";

/**
 * @notice yAxis Token
 * @dev Contract has been copied from:
 * https://github.com/smartcontractkit/LinkToken/blob/master/contracts/v0.6/LinkToken.sol
 * with modifications only made to TOTAL_SUPPLY, NAME, SYMBOL, and the validAddress
 * modifier's revert message.
 */
contract YaxisToken is LinkERC20, ERC677Token {
    uint256 private constant TOTAL_SUPPLY = 11*10**24;
    string private constant NAME = "yAxis V2";
    string private constant SYMBOL = "YAXIS";

    constructor()
        public
        ERC20(NAME, SYMBOL)
    {
        _onCreate();
    }

    /**
     * @dev Hook that is called when this contract is created.
     * Useful to override constructor behaviour in child contracts (e.g., LINK bridge tokens).
     * @notice Default implementation mints 10**27 tokens to msg.sender
     */
    function _onCreate()
        internal
        virtual
    {
        _mint(msg.sender, TOTAL_SUPPLY);
    }

    /**
     * @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
        override
        virtual
        validAddress(recipient)
    {
        super._transfer(sender, recipient, amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is 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
        override
        virtual
        validAddress(spender)
    {
        super._approve(owner, spender, amount);
    }


    // MODIFIERS

    modifier validAddress(address _recipient) {
        require(_recipient != address(this), "!validAddress");
        _;
    }
}

// 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 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, 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) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * 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);
        uint256 c = a - b;

        return c;
    }

    /**
     * @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) {
        // 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 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts 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) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts 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) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../GSN/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 returns (string memory) {
        return _name;
    }

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

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view 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 {
        _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;

/**
 * @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);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "./token/ERC677.sol";
import "./token/ERC677Receiver.sol";

abstract contract ERC677Token is ERC20, ERC677 {
  /**
   * @dev transfer token to a contract address with additional data if the recipient is a contact.
   * @param _to The address to transfer to.
   * @param _value The amount to be transferred.
   * @param _data The extra data to be passed to the receiving contract.
   */
  function transferAndCall(address _to, uint _value, bytes memory _data)
    public
    override
    virtual
    returns (bool success)
  {
    super.transfer(_to, _value);
    emit Transfer(msg.sender, _to, _value, _data);
    if (isContract(_to)) {
      contractFallback(_to, _value, _data);
    }
    return true;
  }


  // PRIVATE

  function contractFallback(address _to, uint _value, bytes memory _data)
    private
  {
    ERC677Receiver receiver = ERC677Receiver(_to);
    receiver.onTokenTransfer(msg.sender, _value, _data);
  }

  function isContract(address _addr)
    private
    view
    returns (bool hasCode)
  {
    uint length;
    assembly { length := extcodesize(_addr) }
    return length > 0;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

abstract contract ERC677 is IERC20 {
  function transferAndCall(address to, uint value, bytes memory data) public virtual returns (bool success);

  event Transfer(address indexed from, address indexed to, uint value, bytes data);
}

File 8 of 9 : ERC677Receiver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

abstract contract ERC677Receiver {
  function onTokenTransfer(address _sender, uint _value, bytes memory _data) public virtual;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

abstract contract LinkERC20 is ERC20 {
  /**
   * @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 increaseApproval(address spender, uint256 addedValue) public virtual returns (bool) {
    return super.increaseAllowance(spender, addedValue);
  }

  /**
   * @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 decreaseApproval(address spender, uint256 subtractedValue) public virtual returns (bool) {
    return super.decreaseAllowance(spender, subtractedValue);
  }
}

Settings
{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

API
[{"inputs":[],"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":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"Transfer","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":[],"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":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"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":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"internalType":"bool","name":"success","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"}]

60806040523480156200001157600080fd5b5060408051808201825260088152673ca0bc34b9902b1960c11b602080830191825283518085019094526005845264594158495360d81b9084015281519192916200005f9160039162000224565b5080516200007590600490602084019062000224565b50506005805460ff19166012179055506200008f62000095565b620002c0565b620000ac336a09195731e2ce35eb000000620000ae565b565b6001600160a01b0382166200010a576040805162461bcd60e51b815260206004820152601f60248201527f45524332303a206d696e7420746f20746865207a65726f206164647265737300604482015290519081900360640190fd5b6200011860008383620001bd565b6200013481600254620001c260201b620007c11790919060201c565b6002556001600160a01b0382166000908152602081815260409091205462000167918390620007c1620001c2821b17901c565b6001600160a01b0383166000818152602081815260408083209490945583518581529351929391927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9281900390910190a35050565b505050565b6000828201838110156200021d576040805162461bcd60e51b815260206004820152601b60248201527f536166654d6174683a206164646974696f6e206f766572666c6f770000000000604482015290519081900360640190fd5b9392505050565b828054600181600116156101000203166002900490600052602060002090601f016020900481019282601f106200026757805160ff191683800117855562000297565b8280016001018555821562000297579182015b82811115620002975782518255916020019190600101906200027a565b50620002a5929150620002a9565b5090565b5b80821115620002a55760008155600101620002aa565b610dd380620002d06000396000f3fe608060405234801561001057600080fd5b50600436106100ea5760003560e01c8063661884631161008c578063a457c2d711610066578063a457c2d71461035b578063a9059cbb14610387578063d73dd623146103b3578063dd62ed3e146103df576100ea565b8063661884631461030157806370a082311461032d57806395d89b4114610353576100ea565b806323b872dd116100c857806323b872dd146101c6578063313ce567146101fc578063395093511461021a5780634000aea014610246576100ea565b806306fdde03146100ef578063095ea7b31461016c57806318160ddd146101ac575b600080fd5b6100f761040d565b6040805160208082528351818301528351919283929083019185019080838360005b83811015610131578181015183820152602001610119565b50505050905090810190601f16801561015e5780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b6101986004803603604081101561018257600080fd5b506001600160a01b0381351690602001356104a3565b604080519115158252519081900360200190f35b6101b46104c0565b60408051918252519081900360200190f35b610198600480360360608110156101dc57600080fd5b506001600160a01b038135811691602081013590911690604001356104c6565b61020461054d565b6040805160ff9092168252519081900360200190f35b6101986004803603604081101561023057600080fd5b506001600160a01b038135169060200135610556565b6101986004803603606081101561025c57600080fd5b6001600160a01b038235169160208101359181019060608101604082013564010000000081111561028c57600080fd5b82018360208201111561029e57600080fd5b803590602001918460018302840111640100000000831117156102c057600080fd5b91908080601f0160208091040260200160405190810160405280939291908181526020018383808284376000920191909152509295506105a4945050505050565b6101986004803603604081101561031757600080fd5b506001600160a01b03813516906020013561067f565b6101b46004803603602081101561034357600080fd5b50356001600160a01b0316610692565b6100f76106ad565b6101986004803603604081101561037157600080fd5b506001600160a01b03813516906020013561070e565b6101986004803603604081101561039d57600080fd5b506001600160a01b038135169060200135610776565b610198600480360360408110156103c957600080fd5b506001600160a01b03813516906020013561078a565b6101b4600480360360408110156103f557600080fd5b506001600160a01b0381358116916020013516610796565b60038054604080516020601f60026000196101006001881615020190951694909404938401819004810282018101909252828152606093909290918301828280156104995780601f1061046e57610100808354040283529160200191610499565b820191906000526020600020905b81548152906001019060200180831161047c57829003601f168201915b5050505050905090565b60006104b76104b061081b565b848461081f565b50600192915050565b60025490565b60006104d384848461087f565b610543846104df61081b565b61053e85604051806060016040528060288152602001610d08602891396001600160a01b038a1660009081526001602052604081209061051d61081b565b6001600160a01b0316815260208101919091526040016000205491906108d9565b61081f565b5060019392505050565b60055460ff1690565b60006104b761056361081b565b8461053e856001600061057461081b565b6001600160a01b03908116825260208083019390935260409182016000908120918c1681529252902054906107c1565b60006105b08484610776565b50836001600160a01b0316336001600160a01b03167fe19260aff97b920c7df27010903aeb9c8d2be5d310a2c67824cf3f15396e4c1685856040518083815260200180602001828103825283818151815260200191508051906020019080838360005b8381101561062b578181015183820152602001610613565b50505050905090810190601f1680156106585780820380516001836020036101000a031916815260200191505b50935050505060405180910390a361066f84610970565b1561054357610543848484610976565b600061068b838361070e565b9392505050565b6001600160a01b031660009081526020819052604090205490565b60048054604080516020601f60026000196101006001881615020190951694909404938401819004810282018101909252828152606093909290918301828280156104995780601f1061046e57610100808354040283529160200191610499565b60006104b761071b61081b565b8461053e85604051806060016040528060258152602001610d79602591396001600061074561081b565b6001600160a01b03908116825260208083019390935260409182016000908120918d168152925290205491906108d9565b60006104b761078361081b565b848461087f565b600061068b8383610556565b6001600160a01b03918216600090815260016020908152604080832093909416825291909152205490565b60008282018381101561068b576040805162461bcd60e51b815260206004820152601b60248201527f536166654d6174683a206164646974696f6e206f766572666c6f770000000000604482015290519081900360640190fd5b3390565b816001600160a01b03811630141561086e576040805162461bcd60e51b815260206004820152600d60248201526c2176616c69644164647265737360981b604482015290519081900360640190fd5b610879848484610a50565b50505050565b816001600160a01b0381163014156108ce576040805162461bcd60e51b815260206004820152600d60248201526c2176616c69644164647265737360981b604482015290519081900360640190fd5b610879848484610b3c565b600081848411156109685760405162461bcd60e51b81526004018080602001828103825283818151815260200191508051906020019080838360005b8381101561092d578181015183820152602001610915565b50505050905090810190601f16801561095a5780820380516001836020036101000a031916815260200191505b509250505060405180910390fd5b505050900390565b3b151590565b604051635260769b60e11b815233600482018181526024830185905260606044840190815284516064850152845187946001600160a01b0386169463a4c0ed369490938993899360840190602085019080838360005b838110156109e45781810151838201526020016109cc565b50505050905090810190601f168015610a115780820380516001836020036101000a031916815260200191505b50945050505050600060405180830381600087803b158015610a3257600080fd5b505af1158015610a46573d6000803e3d6000fd5b5050505050505050565b6001600160a01b038316610a955760405162461bcd60e51b8152600401808060200182810382526024815260200180610d556024913960400191505060405180910390fd5b6001600160a01b038216610ada5760405162461bcd60e51b8152600401808060200182810382526022815260200180610cc06022913960400191505060405180910390fd5b6001600160a01b03808416600081815260016020908152604080832094871680845294825291829020859055815185815291517f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b9259281900390910190a3505050565b6001600160a01b038316610b815760405162461bcd60e51b8152600401808060200182810382526025815260200180610d306025913960400191505060405180910390fd5b6001600160a01b038216610bc65760405162461bcd60e51b8152600401808060200182810382526023815260200180610c9d6023913960400191505060405180910390fd5b610bd1838383610c97565b610c0e81604051806060016040528060268152602001610ce2602691396001600160a01b03861660009081526020819052604090205491906108d9565b6001600160a01b038085166000908152602081905260408082209390935590841681522054610c3d90826107c1565b6001600160a01b038084166000818152602081815260409182902094909455805185815290519193928716927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a3505050565b50505056fe45524332303a207472616e7366657220746f20746865207a65726f206164647265737345524332303a20617070726f766520746f20746865207a65726f206164647265737345524332303a207472616e7366657220616d6f756e7420657863656564732062616c616e636545524332303a207472616e7366657220616d6f756e74206578636565647320616c6c6f77616e636545524332303a207472616e736665722066726f6d20746865207a65726f206164647265737345524332303a20617070726f76652066726f6d20746865207a65726f206164647265737345524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726fa2646970667358221220ad5d01f591b1a4e9bd96e711535d7039f7c129090add807e501e224a26c9f89f64736f6c634300060c0033

Deployed Bytecode

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

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

OVERVIEW

yAxis is an experiment in DAO-directed yield farming where YAX holders vote regularly on which yVault/aggregator strategy to implement for user funds.

Loading...
Loading
[ Download: CSV Export  ]

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.