Migrations

Unclassified

0x292d87d050af...1d5f4e016fee

ByzantiumExact Bytecode MatchEdit this contract

Bytecode verified via sibling

This contract shares identical runtime bytecode with Migrations (0x0313c423...) which has been verified through compiler archaeology.

Deployed September 12, 2018 (7 years ago)Block 6,317,682

Migrations 760 sibling — cluster of 17 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x2a12ef...469da0

Deployment Block

6,317,682

Deployment Date

Sep 12, 2018, 10:52 AM

Code Size

760.0 B

Gas at Deploy

277,462

Transactions by Year

20181

Deployment Transaction: 0x4babefd6da03c2a1...5f73993c81281770

Description

Sibling cluster of 17 identical deployments. Compiled with solc 0.4.24 optimizer OFF. Exact code match; only trailing 34-byte Swarm metadata differs. Etherscan-verified with EthereumHistory attribution.

Source Verified

SolidityExact bytecode match(760 bytes)

Compiler: 0.4.24+

Exact code match on 726 code bytes with solc 0.4.24 opt OFF. Cluster of 19 identical-runtime deployments. 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 Opcodes89

Jump Instructions36

Storage Operations7

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

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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