HashStore

Unclassified

0xf371377b4c6c...32ca172aaabe

ByzantiumExact Bytecode MatchEdit this contract

Deployed March 14, 2018 (8 years ago)Block 5,252,545

Minimal view-only contract holding a single uint256 hash in state, exposed via getHash(). First of 328 identical siblings. Source verified by EthereumHistory.

Byzantium EraVerified Source

Key Facts

Deployer

0x0099eb...14caa8

Deployment Block

5,252,545

Deployment Date

Mar 14, 2018, 07:23 AM

Code Size

151.0 B

Gas at Deploy

116,688

Deployment Transaction: 0xb634878f139bdf0d...1d670d026ce9f2d6

Description

This contract is the first of 328 identical HashStore deployments. It has a single external function getHash() that returns a uint256 stored in storage slot 0. No writes are exposed externally — the hash is presumably set once via the constructor. Compiled with solc 0.4.18+commit.9cf6e910 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 hashstore-0xf371377b.

Source Verified

SolidityExact bytecode match(151 bytes)

Compiler: 0.4.18+

View verification proof

Exact match on 117 code bytes with solc 0.4.18 optimizer ON runs=200. Only trailing 34-byte Swarm metadata differs (source formatting delta). Cluster: 328+ 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

Opcodes151

Unique Opcodes69

Jump Instructions7

Storage Operations2

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 HashStore {
    uint256 hash;

    function getHash() constant returns (uint256) {
        return hash;
    }
}

External Links

Etherscan Verified Source (if any)

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