Msg

Unclassified

0x2c8f586288e5...40a4a337b173

ByzantiumExact Bytecode MatchEdit this contract

Deployed January 13, 2018 (8 years ago)Block 4,901,850

Minimal contract that stores a single public string in state, exposed via the auto-generated m() getter. First of 281 identical siblings. Source verified by EthereumHistory.

Byzantium EraVerified Source

Key Facts

Deployer

0x9ad9fe...7ff4a4

Deployment Block

4,901,850

Deployment Date

Jan 13, 2018, 01:48 PM

Code Size

388.0 B

Gas at Deploy

191,848

Deployment Transaction: 0x1a1ed5ff6a9167cd...801518fea276467c

Description

This contract is the first of 281 identical Msg deployments. It has a single state variable string public m and no other functions; the public keyword generates the m() getter automatically. The string is presumably set once via the constructor. Compiled with solc 0.4.11+commit.68ef5810 optimizer ON runs=200. Exact code match; only the trailing 34-byte Swarm/CBOR metadata hash differs from source-formatting delta.

Proof: cartoonitunes/awesome-ethereum-proofs, folder msg-string-0x2c8f5862.

Source Verified

SolidityExact bytecode match(388 bytes)

Compiler: 0.4.11+

View verification proof

Exact match on 354 code bytes with solc 0.4.11 optimizer ON runs=200. Only trailing 34-byte Swarm metadata differs (source formatting delta). Cluster: 281+ identical-runtime deployments. Also 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

Opcodes388

Unique Opcodes83

Jump Instructions20

Storage Operations6

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
pragma solidity ^0.4.0;

contract Msg {
    string public m;
}

External Links

Etherscan Verified Source (if any)

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