Contract

0x1f7e55F2e907dDce8074b916f94F62C7e8A18571

Source Code

API

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Eth Value

$0.00

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ContractCreator

0x82e1D059...fe50a183C | 3 yrs 146 days ago

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Age:24H

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Contract Source Code Verified (Exact Match)

Contract Name:

Vyper_contract

Compiler Version

vyper:0.3.7

Optimization Enabled:

N/A

Other Settings:

paris EvmVersion, GNU GPLv3 license

Contract Source Code (Vyper language format)

IDE

# @version ^0.3.7

MAX_DATA: constant(uint256) = 2**13

interface RocketStorageInterface:
  def getAddress(_key: bytes32) -> address: view

interface RocketDepositPoolInterface:
  def deposit(): payable

interface FlashLoanInterface:
  def flashLoan(receiver: address, token: address, amount: uint256, data: Bytes[MAX_DATA]) -> bool: nonpayable

interface WethInterface:
  def approve(_spender: address, _amount: uint256) -> bool: nonpayable
  def balanceOf(_who: address) -> uint256: view
  def deposit(): payable
  def withdraw(_wad: uint256): nonpayable

interface RethInterface:
  def approve(_spender: address, _amount: uint256) -> bool: nonpayable
  def balanceOf(_who: address) -> uint256: view
  def transfer(_to: address, _wad: uint256) -> bool: nonpayable

interface RocketDepositArbitrageInterface:
  def drain(): nonpayable

rocketStorage: immutable(RocketStorageInterface)
rethToken: immutable(RethInterface)
wethToken: immutable(WethInterface)
flashLender: immutable(FlashLoanInterface)
swapRouter: immutable(address)
owner: public(address)

@external
def __init__(flashLenderAddress: address, rocketStorageAddress: address, swapRouterAddress: address, wethAddress: address):
  self.owner = msg.sender
  rocketStorage = RocketStorageInterface(rocketStorageAddress)
  rethAddress: address = rocketStorage.getAddress(keccak256("contract.addressrocketTokenRETH"))
  rethToken = RethInterface(rethAddress)
  wethToken = WethInterface(wethAddress)
  flashLender = FlashLoanInterface(flashLenderAddress)
  swapRouter = swapRouterAddress

@external
def setOwner(newOwner: address):
  assert msg.sender == self.owner, "only owner can set owner"
  self.owner = newOwner

@external
@payable
def __default__():
  assert msg.sender == wethToken.address, "only WETH can send ETH"

@external
def onFlashLoan(initiator: address, token: address, amount: uint256, fee: uint256, data: Bytes[MAX_DATA]) -> bytes32:
  assert initiator == self, "only I can initiate a flash loan"
  assert token == wethToken.address, "only WETH can be flash loaned"
  assert fee == 0, "no fee allowed"

  wethToken.withdraw(amount)

  rocketDepositPool: RocketDepositPoolInterface = RocketDepositPoolInterface(
    rocketStorage.getAddress(keccak256("contract.addressrocketDepositPool")))
  assert rethToken.balanceOf(self) == 0, "unexpected held rETH"
  rocketDepositPool.deposit(value = amount)

  assert rethToken.approve(swapRouter, rethToken.balanceOf(self)), "rETH approve failed"
  raw_call(swapRouter, data)
  assert wethToken.balanceOf(self) >= amount, "not enough WETH after swap"
  assert rethToken.balanceOf(self) == 0, "rETH left over after swap"

  assert wethToken.approve(msg.sender, amount), "WETH approve failed"
  return keccak256("ERC3156FlashBorrower.onFlashLoan")

@external
def arb(wethAmount: uint256, minProfit: uint256, swapData: Bytes[MAX_DATA]):
  RocketDepositArbitrageInterface(self).drain()
  assert flashLender.flashLoan(self, wethToken.address, wethAmount, swapData), "flash loan failed"
  profit: uint256 = wethToken.balanceOf(self)
  assert profit >= minProfit, "not enough profit"
  wethToken.withdraw(profit)
  send(msg.sender, profit)

@external
def drain():
  rethBalance: uint256 = rethToken.balanceOf(self)
  if 0 < rethBalance:
    rethToken.transfer(self.owner, rethBalance)

  wethBalance: uint256 = wethToken.balanceOf(self)
  if 0 < wethBalance:
    wethToken.withdraw(wethBalance)
  if 0 < self.balance:
    send(self.owner, self.balance)

Contract Security Audit

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Contract ABI

API

[{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"flashLenderAddress","type":"address"},{"name":"rocketStorageAddress","type":"address"},{"name":"swapRouterAddress","type":"address"},{"name":"wethAddress","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"setOwner","inputs":[{"name":"newOwner","type":"address"}],"outputs":[]},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"nonpayable","type":"function","name":"onFlashLoan","inputs":[{"name":"initiator","type":"address"},{"name":"token","type":"address"},{"name":"amount","type":"uint256"},{"name":"fee","type":"uint256"},{"name":"data","type":"bytes"}],"outputs":[{"name":"","type":"bytes32"}]},{"stateMutability":"nonpayable","type":"function","name":"arb","inputs":[{"name":"wethAmount","type":"uint256"},{"name":"minProfit","type":"uint256"},{"name":"swapData","type":"bytes"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"drain","inputs":[],"outputs":[]},{"stateMutability":"view","type":"function","name":"owner","inputs":[],"outputs":[{"name":"","type":"address"}]}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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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)

00000000000000000000000007df2ad9878f8797b4055230bbae5c808b8259b30000000000000000000000001d8f8f00cfa6758d7be78336684788fb0ee0fa460000000000000000000000001111111254fb6c44bac0bed2854e76f90643097d000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2

-----Decoded View---------------
Arg [0] : flashLenderAddress (address): 0x07df2ad9878F8797B4055230bbAE5C808b8259b3
Arg [1] : rocketStorageAddress (address): 0x1d8f8f00cfa6758d7bE78336684788Fb0ee0Fa46
Arg [2] : swapRouterAddress (address): 0x1111111254fb6c44bAC0beD2854e76F90643097d
Arg [3] : wethAddress (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 00000000000000000000000007df2ad9878f8797b4055230bbae5c808b8259b3
Arg [1] : 0000000000000000000000001d8f8f00cfa6758d7be78336684788fb0ee0fa46
Arg [2] : 0000000000000000000000001111111254fb6c44bac0bed2854e76f90643097d
Arg [3] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2

Block		Uncle Number	Difficulty	Gas Used	Reward

View All Uncles

0x1f7e55F2e907dDce8074b916f94F62C7e8A18571

Net Worth in USD

$0.00

Net Worth in ETH

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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.

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