Migrations

Unclassified

0x1b21c40d4d27...6af376f0cf00

ByzantiumSource VerifiedEdit this contract

Bytecode verified via sibling

This contract shares identical runtime bytecode with a verified contract (0xc28a8b7b...) which has been verified through compiler archaeology.

Deployed December 13, 2018 (7 years ago)Block 6,876,595

Migrations sibling — cluster of 22 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x1564e4...b50d37

Deployment Block

6,876,595

Deployment Date

Dec 13, 2018, 02:53 AM

Code Size

572.0 B

Gas at Deploy

224,195

Deployment Transaction: 0x01e05bf26c37ca43...ea9c401fa1241aba

Description

Sibling cluster of 22 identical Migrations deployments. Compiled with solc 0.4.24. Exact code match; only trailing 34-byte Swarm metadata differs.

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

Opcodes572

Unique Opcodes102

Jump Instructions34

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)

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