Migrations

Unclassified

0x0abfdcb89d01...2145d9962e5a

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 6,317,645

Migrations 760 sibling cluster of 18 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x2a12ef...469da0

Deployment Block

6,317,645

Deployment Date

Sep 12, 2018, 10:44 AM

Code Size

760.0 B

Gas at Deploy

277,462

Deployment Transaction: 0x561e9867c4571711...bc33ae40b6e4675a

Description

Sibling cluster of 18 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.

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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