Contract 0x21e0c646be39...5492b184f15c

Utility

0x21e0c646be39...5492b184f15c

FrontierContract #3,227Exact Bytecode MatchEdit this contract

Deployed November 2, 2015 (10 years ago)Block 480,347

The multiply-by-seven example from the JSON-RPC documentation

Frontier EraVerified Source

Context

Deployed in November 2015 on the Frontier chain, with a compiler that was already a year out of date by then.

Key Facts

Deployer

0xc4d227...3e548f

Deployment Block

480,347

Deployment Date

Nov 2, 2015, 09:32 PM

Code Size

94.0 B

Gas at Deploy

41,524

Deployment Transaction: 0xfb4b286af34e833c...d3424a0f5ac5652e

Description

One function that takes a number and returns it multiplied by seven. It is the contract the Ethereum JSON-RPC and web3 documentation used to demonstrate eth_call and ABI encoding, so it exists to be called rather than to do anything. This deployment was produced by the PoC-8 era cpp-ethereum compiler, which reports itself as version 0.8.2 and emits a twelve byte constructor prologue with no memory pointer setup, so Etherscan has no compiler that can verify it.

Source Verified

Exact bytecode match(94 bytes)

Compiler: cpp-eth

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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

Opcodes94

Unique Opcodes31

Jump Instructions6

Storage Operations0

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

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Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
contract Multiply7 {
    function multiply(uint input) constant returns (uint) {
        return input * 7;
    }
}