0x99e9...ea4a

Unclassified

0x99e9034abd73...74d9591bea4a

ByzantiumBytecode OnlyEdit this contract

Deployed May 11, 2018 (8 years ago)Block 5,597,148

This contract is not yet documented

Know something about this contract? Switch to the History tab and suggest an edit to help preserve Ethereum history.

Byzantium EraVerified Source

Key Facts

Deployer

0x45f8a0...f34e2e

Deployment Block

5,597,148

Deployment Date

May 11, 2018, 09:29 PM

Code Size

760.0 B

Gas at Deploy

277,462

Deployment Transaction: 0x760fd7d72a6237d4...f30f333993a750bb

Heuristic Analysis

The following characteristics were detected through bytecode analysis and may not be accurate.

Detected Type: Unclassified

Byzantium Era

First Metropolis hard fork. Added zk-SNARK precompiles, REVERT opcode, and staticcall.

Block span: 4,370,000 — 7,279,999

October 16, 2017 — February 28, 2019

Bytecode Overview

Opcodes760

Unique Opcodes102

Jump Instructions35

Storage Operations7

Verified Source Available

This contract has verified source code on Etherscan.

Verified on Etherscan (similar match)

Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
pragma solidity ^0.4.24;

contract Migrations {
  address public owner;
  uint public last_completed_migration;

  modifier restricted() {
    if (msg.sender == owner) _;
  }

  constructor() public {
    owner = msg.sender;
  }

  function setCompleted(uint completed) public restricted {
    last_completed_migration = completed;
  }

  function upgrade(address new_address) public restricted {
    Migrations upgraded = Migrations(new_address);
    upgraded.setCompleted(last_completed_migration);
  }
}

External Links

Etherscan Verified Source (if any)

Related contracts

Migrations

Same deployer

Standard Truffle Migrations (unoptimized variant). Cluster of 16 identical deployments.

0x07bd05...cf540fMay 20, 2018

Migrations

Same deployer

Migrations 760 sibling cluster of 15 identical deployments.

0x22a201...28b26bMay 20, 2018

Msg

Same era

Minimal contract that stores a single public string in state, exposed via the auto-generated m() getter. First of 281 identical siblings. Source verified by EthereumHistory.

0x2c8f58...37b173January 13, 2018

Sweeper

Same era

Minimal ETH sweeper, first of 1,900 identical deployments in a 2-day burst in January 2018. All sweep to a single hardcoded destination. Source verified by EthereumHistory.

0xeb15f6...6cb3e1January 23, 2018

Sweep

Same era

ETH sweep-to-fixed-recipient — fallback forwards the contract's entire balance to `0xd293a88c…8d4` via `.send()` and reverts on failure. Massive cluster of 1899 identical deployments — likely deposit-address contracts for a single custodian.

0x00188b...b260a7January 23, 2018

Msg

Same era

Msg sibling — cluster of 279 identical deployments.

0x038cd0...fa23abFebruary 10, 2018