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0xFC8d81A01deD207aD3DEB4FE91437CAe52deD0b5

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Contract Source Code Verified (Exact Match)

Contract Name:
AnkrETHRateProvider

Compiler Version
v0.8.14+commit.80d49f37

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 5 : AnkrETHRateProvider.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

import "./DefaultRateProvider.sol";

/** 
 *  ankrETH rate provider contract.
 */
contract AnkrETHRateProvider is DefaultRateProvider {

    // --- Init ---
    constructor(address _token) DefaultRateProvider(_token) {}

    function ankrETH() external view returns(address) {
        return s_token;
    }
}

File 2 of 5 : IRateProvider.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

/** 
 *  Balancer rate interface.
 */
interface IRateProvider {
    
    function getRate() external view returns (uint256);
}

File 3 of 5 : IAnkrRatio.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

/** 
 *  ankrMATIC interface.
 */
interface IAnkrRatio {
    function ratio() external view returns (uint256);
}

File 4 of 5 : DefaultRateProvider.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

import "./interfaces/IRateProvider.sol";
import "./interfaces/IAnkrRatio.sol";
import "@openzeppelin/contracts-upgradeable/utils/math/SafeMathUpgradeable.sol";

/**
 *  Inheritable standard rate provider interface.
 */
abstract contract DefaultRateProvider is IRateProvider {
    // --- Wrapper ---
    using SafeMathUpgradeable for uint256;

    // --- Var ---
    address internal s_token;

    // --- Init ---
    constructor(address _token) {
        s_token = _token;
    }

    // --- View ---
    function getRate() external view override returns (uint256) {
        return safeFloorMultiplyAndDivide(1e18, 1e18, IAnkrRatio(s_token).ratio());
    }

    function safeFloorMultiplyAndDivide(uint256 a, uint256 b, uint256 c) internal pure returns (uint256) {
        uint256 remainder = a.mod(c);
        uint256 result = a.div(c);
        bool safe;
        (safe, result) = result.tryMul(b);
        if (!safe) {
            return 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
        }
        (safe, result) = result.tryAdd(remainder.mul(b).div(c));
        if (!safe) {
            return 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
        }
        return result;
    }
}

File 5 of 5 : SafeMathUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMathUpgradeable {
    /**
     * @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) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            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) {
        unchecked {
            // 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) {
        unchecked {
            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) {
        unchecked {
            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) {
        return a + b;
    }

    /**
     * @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 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) {
        return a * b;
    }

    /**
     * @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.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        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) {
        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) {
        unchecked {
            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.
     *
     * 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) {
        unchecked {
            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) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_token","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ankrETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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)

00000000000000000000000012d8ce035c5de3ce39b1fdd4c1d5a745eaba3b8c

-----Decoded View---------------
Arg [0] : _token (address): 0x12D8CE035c5DE3Ce39B1fDD4C1d5a745EAbA3b8C

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000012d8ce035c5de3ce39b1fdd4c1d5a745eaba3b8c


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