SimpleStorage

Utility

0x4478afbd9daf...4514cc13c409

FrontierContract #3,648Exact Bytecode MatchEdit this contract

Deployed November 10, 2015 (10 years ago)Block 516,293

The Solidity documentation storage example, given a public variable and an initialising constructor

Frontier EraVerified Source

Context

Deployed in November 2015 during the Frontier period. SimpleStorage was the first contract most people compiled, and copies of it with small edits are scattered across the early chain.

Key Facts

Deployer

0x4a34a3...f5d3c1

Deployment Block

516,293

Deployment Date

Nov 10, 2015, 12:08 AM

Code Size

261.0 B

Gas at Deploy

81,755

Deployment Transaction: 0x438251e1aa7621d2...97ff3c88ee97a282

Description

A single unsigned integer held in storage, with set to write it and get to read it back. The variable is declared public, so the compiler also emits a storedData accessor, and the constructor takes an initial value that is written into the slot at deployment. It is the SimpleStorage example that opens the Solidity documentation, edited in those two ways by whoever deployed it.

Source Verified

Exact bytecode match(261 bytes)

Compiler: v0.1.6+

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Heuristic Analysis

The following characteristics were detected through bytecode analysis and may not be accurate.

Detected Type: Utility

Frontier Era

The initial release of Ethereum. A bare-bones implementation for technical users.

Block span: 0 — 1,149,999

July 30, 2015 — March 14, 2016

Bytecode Overview

Opcodes261

Unique Opcodes50

Jump Instructions13

Storage Operations4

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

Verified on Etherscan

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Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
contract SimpleStorage {
    uint public storedData;

    function SimpleStorage(uint initVal) {
        storedData = initVal;
    }

    function set(uint x) {
        storedData = x;
    }

    function get() constant returns (uint retVal) {
        return storedData;
    }
}