Migrations

Unclassified

0x28cdd4247cc9...97d7029ae0d5

ByzantiumSource VerifiedEdit this contract

Bytecode verified via sibling

This contract shares identical runtime bytecode with a verified contract (0xfd4de356...) which has been verified through compiler archaeology.

Deployed December 18, 2018 (7 years ago)Block 6,906,314

Migrations 760 sibling cluster of 20 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x8a93f9...b3636d

Deployment Block

6,906,314

Deployment Date

Dec 18, 2018, 01:23 AM

Code Size

760.0 B

Gas at Deploy

277,462

Deployment Transaction: 0xcc26d3b07c684598...030d0a3c2813c97d

Description

Sibling cluster of 20 identical Migrations deployments. Compiled with solc 0.4.24 optimizer OFF. Exact code match; only trailing 34-byte Swarm metadata differs. Etherscan-verified with EthereumHistory attribution.

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 Opcodes100

Jump Instructions35

Storage Operations8

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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