Migrations

Unclassified

0x3975dedcedaa...c35dcd0dfdbf

ByzantiumExact Bytecode MatchEdit this contract

Bytecode verified via sibling

This contract shares identical runtime bytecode with Migrations (0x2cad74e4...) which has been verified through compiler archaeology.

Deployed June 10, 2018 (8 years ago)Block 5,763,511

Migrations 572 sibling cluster of 16 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x168498...8803bf

Deployment Block

5,763,511

Deployment Date

Jun 10, 2018, 07:54 AM

Code Size

572.0 B

Gas at Deploy

224,195

Transactions by Year

20181

Deployment Transaction: 0x4b70af1577d8d2d0...d89d6c2fa1c5ada5

Description

Sibling cluster of 16 identical Migrations deployments. Compiled with solc 0.4.24 optimizer ON runs=200. Exact code match; only trailing 34-byte Swarm metadata differs. Etherscan-verified with EthereumHistory attribution.

Source Verified

SolidityExact bytecode match(572 bytes)

Compiler: 0.4.24+

Cluster of 18 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

Opcodes572

Unique Opcodes104

Jump Instructions33

Storage Operations8

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

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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