ETH Price: $2,941.02 (-5.75%)
Gas: 8 Gwei

Contract

0x3027f3CA6282A616a410c9585A882668ab80E182
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Value
Transfer Ownersh...202224732024-07-03 0:42:232 days ago1719967343IN
0x3027f3CA...8ab80E182
0 ETH0.000143075
0x60c06040202224702024-07-03 0:41:472 days ago1719967307IN
 Create: FloorPriceFeedAdapter
0 ETH0.002395125

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Contract Source Code Verified (Exact Match)

Contract Name:
FloorPriceFeedAdapter

Compiler Version
v0.8.26+commit.8a97fa7a

Optimization Enabled:
Yes with 200 runs

Other Settings:
shanghai EvmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2024-07-03
*/

// SPDX-License-Identifier: BSD-3-Clause
pragma solidity 0.8.26;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
}

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

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

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

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

contract FloorPriceFeedAdapter is Ownable {

    error StalePrice();
    error InvalidPriceFeedDecimals();

    AggregatorV3Interface public immutable floorPriceFeed;
    AggregatorV3Interface public immutable ethPriceFeed;

    uint public floorStalePriceDelay;
    uint public ethStalePriceDelay;

    /**
     * @return uint The scaled floor price in USD
     */
    function latestAnswer()
        public
        view
        returns (int256) {

        (
            ,
            int floorRate, // floor/ETH rate
            ,
            uint floorUpdatedAt,

        ) = floorPriceFeed.latestRoundData();
        // check if price is stale
        if (floorStalePriceDelay != 0 && block.timestamp > floorUpdatedAt + floorStalePriceDelay) {
            revert StalePrice();
        }

        (
            ,
            int ethRate, // ETH/USD rate
            ,
            uint ethUpdatedAt,

        ) = ethPriceFeed.latestRoundData();
        // check if price is stale
        if (ethStalePriceDelay != 0 && block.timestamp > ethUpdatedAt + ethStalePriceDelay) {
            revert StalePrice();
        }

        return floorRate * ethRate / 1e18; // scale to 8 decimals places like Chainlink
    }

    /**
     * @return roundId always 0
     *         answer The scaled floor price in USD
     *         startedAt always 0
     *         updatedAt always block.timestamp
     *         answeredInRound always 0
     */
    function latestRoundData()
        public
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        ) {
        return (0, latestAnswer(), 0, block.timestamp, 0);
    }

    constructor(AggregatorV3Interface floorPriceFeed_, AggregatorV3Interface ethPriceFeed_, uint _floorStalePriceDelay, uint _ethStalePriceDelay) public Ownable(msg.sender) {
        if (floorPriceFeed_.decimals() != 18 || ethPriceFeed_.decimals() != 8) {
            revert InvalidPriceFeedDecimals();
        }
        
        floorPriceFeed = floorPriceFeed_;
        ethPriceFeed = ethPriceFeed_;

        floorStalePriceDelay = _floorStalePriceDelay;
        ethStalePriceDelay = _ethStalePriceDelay;
    }

    /**
     * @notice Set the time delay after which the price feed is considered stale.
     * @param _floorStalePriceDelay the time delay in seconds.
     */
    function setFloorStalePriceDelay(uint _floorStalePriceDelay) external onlyOwner {
        floorStalePriceDelay = _floorStalePriceDelay;
    }

    /**
     * @notice Set the time delay after which the price feed is considered stale.
     * @param _ethStalePriceDelay the time delay in seconds.
     */
    function setEthStalePriceDelay(uint _ethStalePriceDelay) external onlyOwner {
        ethStalePriceDelay = _ethStalePriceDelay;
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract AggregatorV3Interface","name":"floorPriceFeed_","type":"address"},{"internalType":"contract AggregatorV3Interface","name":"ethPriceFeed_","type":"address"},{"internalType":"uint256","name":"_floorStalePriceDelay","type":"uint256"},{"internalType":"uint256","name":"_ethStalePriceDelay","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InvalidPriceFeedDecimals","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"StalePrice","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"ethPriceFeed","outputs":[{"internalType":"contract AggregatorV3Interface","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ethStalePriceDelay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"floorPriceFeed","outputs":[{"internalType":"contract AggregatorV3Interface","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"floorStalePriceDelay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_ethStalePriceDelay","type":"uint256"}],"name":"setEthStalePriceDelay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_floorStalePriceDelay","type":"uint256"}],"name":"setFloorStalePriceDelay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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

00000000000000000000000030b9ed5e324aaf1cc363e9b6f3175b9484a3b43a0000000000000000000000005f4ec3df9cbd43714fe2740f5e3616155c5b84190000000000000000000000000000000000000000000000000000000000015f900000000000000000000000000000000000000000000000000000000000001c20

-----Decoded View---------------
Arg [0] : floorPriceFeed_ (address): 0x30B9ED5E324aaF1cC363e9B6F3175B9484A3B43A
Arg [1] : ethPriceFeed_ (address): 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419
Arg [2] : _floorStalePriceDelay (uint256): 90000
Arg [3] : _ethStalePriceDelay (uint256): 7200

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 00000000000000000000000030b9ed5e324aaf1cc363e9b6f3175b9484a3b43a
Arg [1] : 0000000000000000000000005f4ec3df9cbd43714fe2740f5e3616155c5b8419
Arg [2] : 0000000000000000000000000000000000000000000000000000000000015f90
Arg [3] : 0000000000000000000000000000000000000000000000000000000000001c20


Deployed Bytecode Sourcemap

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Swarm Source

ipfs://b3ba9b94bc2f68c3b18db212c4c99b765638b8f93ecc0beda058e4c986e52fbc

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