Migrations

Unclassified

0x00f9bdf75089...cdfa462a1ff0

ByzantiumExact Bytecode MatchEdit this contract

Deployed August 19, 2018 (8 years ago)Block 6,175,752

Migrations 572 sibling cluster of 16 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0xf1f28d...36859e

Deployment Block

6,175,752

Deployment Date

Aug 19, 2018, 01:36 PM

Code Size

572.0 B

Gas at Deploy

224,195

Deployment Transaction: 0x6fdd90024021e0aa...b77e238636e73d76

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 16 identical-runtime deployments.

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 Instructions33

Storage Operations8

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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