Contract

0xf77e132799DBB0d83A4fB7df10DA04849340311A

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Source Code

Overview

ETH Balance

0 ETH

Eth Value

$0.00

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ContractCreator

Spark: Deployer at txn 0x6489a57bdaf16d1d1a7cc772ffffaedae25acaa6b5145e1820a3ddc3ddb47dd6

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x73CB2C1E...bbefb3BFc
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:

WSTETHExchangeRateOracle

Compiler Version

v0.8.20+commit.a1b79de6

Optimization Enabled:

Yes with 200 runs

Other Settings:

paris EvmVersion

Contract Source Code (Solidity Standard Json-Input format)

IDE

File 1 of 2 : WSTETHExchangeRateOracle.sol

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.0;

import { IPriceSource } from "./interfaces/IPriceSource.sol";

interface ILidoStakedEth {
    function getPooledEthByShares(uint256 shares) external view returns (uint256);
}

/**
 *  @title WSTETHExchangeRateOracle
 *  @dev   Provides wstETH / USD by multiplying the wstETH exchange rate by ETH / USD.
 *         This provides a "non-market" price. Any depeg event will be ignored.
 */
contract WSTETHExchangeRateOracle {

    /// @notice Lido staked eth token contract.
    ILidoStakedEth public immutable steth;

    /// @notice The price source for ETH / USD.
    IPriceSource public immutable ethSource;

    constructor(address _steth, address _ethSource) {
        // 8 decimals required as AaveOracle assumes this
        require(IPriceSource(_ethSource).decimals() == 8, "WSTETHExchangeRateOracle/invalid-decimals");
        
        steth     = ILidoStakedEth(_steth);
        ethSource = IPriceSource(_ethSource);
    }

    function latestAnswer() external view returns (int256) {
        int256 ethUsd       = ethSource.latestAnswer();
        int256 exchangeRate = int256(steth.getPooledEthByShares(1e18));

        if (ethUsd <= 0 || exchangeRate <= 0) {
            return 0;
        }

        return exchangeRate * ethUsd / 1e18;
    }

    function decimals() external pure returns (uint8) {
        return 8;
    }

}

File 2 of 2 : IPriceSource.sol

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.0;

interface IPriceSource {
    function latestAnswer() external view returns (int256);
    function decimals() external view returns (uint8);
}

Settings

{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc20-helpers/=lib/erc20-helpers/src/",
    "forge-std/=lib/forge-std/src/",
    "sparklend-v1-core/=lib/sparklend-v1-core/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "sparklend-address-registry/=lib/sparklend-address-registry/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

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Contract ABI

API

[{"inputs":[{"internalType":"address","name":"_steth","type":"address"},{"internalType":"address","name":"_ethSource","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"ethSource","outputs":[{"internalType":"contract IPriceSource","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"steth","outputs":[{"internalType":"contract ILidoStakedEth","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

Deployed Bytecode

Decompile Bytecode

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