Greeter

Utility

0x70791019dcb2...d573105c5d32

FrontierContract #248Exact Bytecode MatchEdit this contract

Deployed August 14, 2015 (11 years ago)Block 85,533

The go-ethereum Contract Tutorial greeter, deployed on 14 August 2015 with its greeting passed as a constructor argument.

Frontier EraVerified Source

Historical Significance

The Contract Tutorial was the introduction to Solidity that shipped with go-ethereum, and deploying the greeter was its final step, so each copy preserves the sentence its author chose to write onto a public chain while learning the tools.

Context

Ethereum's Frontier network went live on 30 July 2015, and the greeter from the Contract Tutorial on the go-ethereum wiki was the contract most people deployed first. The copies that survive from the opening days of the chain are the record of who was trying it.

Key Facts

Deployer

0x2c3b2a...cad77a

Deployment Block

85,533

Deployment Date

Aug 14, 2015, 03:11 PM

Code Size

579.0 B

Gas at Deploy

176,821

Transactions by Year

20152

Deployment Transaction: 0xdc1db0285e53d3e7...434da963ea769ed5

Description

The greeter from the Contract Tutorial on the go-ethereum wiki. It inherits a base contract named mortal, which records the account that created it and exposes kill(), a function that self-destructs the contract and sends any balance to that account; only the creator can call it.

The greeter itself adds one string, set from the argument given at deployment and returned by greet(). There is no setter, so the greeting a copy is born with is the only greeting it ever has.

Source Verified

SolidityExact bytecode match(579 bytes)

Compiler: soljson

View verification proof

Backfilled from awesome-ethereum-proofs PR #46.

Historian Categories

Experimental

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

Opcodes579

Unique Opcodes71

Jump Instructions20

Storage Operations11

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Solidity)

contract mortal {
    address owner;

    function mortal() { owner = msg.sender; }

    function kill() { if (msg.sender == owner) suicide(owner); }
}

contract greeter is mortal {
    string greeting;

    function greeter(string _greeting) {
        greeting = _greeting;
    }

    function greet() returns (string) {
        return greeting;
    }
}

External Links

Etherscan Verified Source (if any)

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