Storage

Unclassified

0x160e7129c373...20ec61e2e983

ByzantiumExact Bytecode MatchEdit this contract

Deployed July 29, 2018 (8 years ago)Block 6,052,372

Classic set/get storage tutorial contract. Single uint256 slot with set(uint256) and get() functions. Cluster of 5 identical deployments.

Byzantium EraVerified Source

Key Facts

Deployer

0x997bc1...3d7b72

Deployment Block

6,052,372

Deployment Date

Jul 29, 2018, 05:05 PM

Code Size

211.0 B

Gas at Deploy

108,856

Deployment Transaction: 0x694820ec7af5e6a1...16d9587b48a288d1

Description

This contract is one of 5 identical Storage tutorial deployments — the earliest 'set/get' example from the Solidity docs. A single uint256 slot in state, set(uint256 num) writes it, get() constant returns (uint256) reads it back. Compiled with solc 0.4.18+commit.9cf6e910 optimizer OFF. Exact code match; only trailing 34-byte Swarm metadata differs (source formatting delta).

Source Verified

SolidityExact bytecode match(211 bytes)

Compiler: 0.4.18+

Exact code match on 177 code bytes with solc 0.4.18 opt OFF. Only trailing 34-byte Swarm metadata differs. 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

Opcodes211

Unique Opcodes77

Jump Instructions14

Storage Operations2

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

Verified on Etherscan

Show source code (Solidity)

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

contract Storage {
    uint256 number;

    function set(uint256 num) public {
        number = num;
    }

    function get() public constant returns (uint256){
        return number;
    }
}

External Links

Etherscan Verified Source (if any)

Related contracts

Storage

Same deployer

Storage sibling — cluster of 4 identical deployments.

0x74c47b...ebc74fAugust 3, 2018

Msg

Same era

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.

0x2c8f58...37b173January 13, 2018

Wallet

Same era

Token collection wallet that moves an entire token balance to a chosen address, without the ERC223 callback handler.

0x002204...531195January 19, 2018

Wallet

Same era

Owner wallet that forwards ether to its owner, logs any call from a stranger with the full calldata, and lets the owner execute arbitrary calls.

0x001feb...9e7a4fJanuary 20, 2018

Forwarder

Same era

Ninety-three bytes with one hardcoded destination: every payment received is transferred straight back out to the same address.

0x458353...a562deJanuary 20, 2018

Sweeper

Same era

Minimal ETH sweeper, first of 1,900 identical deployments in a 2-day burst in January 2018. All sweep to a single hardcoded destination. Source verified by EthereumHistory.

0xeb15f6...6cb3e1January 23, 2018