Greeter

experimental

0x630ea66c8c5d...86df5af1fe7a

FrontierContract #5Exact Bytecode MatchEdit this contract

Deployed August 7, 2015 (10 years ago)Block 49,018

One of six HelloWorld Greeter deployments by Linagee on Ethereum Frontier Day 1 - same source, same compiler, greeting: 'Hello World!'

Frontier EraVerified Source

Historical Significance

Part of a wave of Linagee HelloWorld deployments on Frontier Day 1. Shows the early developer practice of repeatedly deploying contracts to test or demonstrate functionality on the live network.

Key Facts

Deployer

Linagee(0x3d0768...116c2d)

Deployment Block

49,018

Deployment Date

Aug 7, 2015, 04:54 PM

Code Size

476.0 B

Gas at Deploy

125,984

Deployment Transaction: 0x5c4fdc85bf5efdfc...118c3cff3c69dff1

Description

Deployed by 0x3D0768 on August 7-8, 2015 - the same address that deployed the first successful HelloWorld on Ethereum (block 48,681). Linagee deployed the canonical Frontier Greeter tutorial at least 6 times with the 'Hello World!' greeting, plus a seventh instance with 'Welcome to Walmart I love you!' All share the same bytecode base: soljson v0.1.1 optimizer OFF, mortal + greeter inheritance pattern.

Source Verified

SolidityExact bytecode match(476 bytes)

Compiler: v0.1.1+

View verification proof

Creation TX matches: compiled Greeter bytecode (692 bytes) + ABI-encoded constructor arg 'Hello World!' = 788 bytes. Compiler: soljson v0.1.1+commit.6ff4cd6a, optimizer OFF.

Historian Categories

Experimental

Heuristic Analysis

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

Detected Type: experimental

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

Opcodes788

Unique Opcodes77

Jump Instructions28

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() constant returns (string) {
        return greeting;
    }
}

External Links

Etherscan Verified Source (if any)

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