Forum

Utility

0xf56d334a7ad4...f8827972e34d

FrontierExact Bytecode MatchEdit this contract

Deployed December 21, 2015 (10 years ago)Block 725,536

Comment log for a marketplace listing, deployed by the store it belongs to

Frontier EraVerified Source

Context

Deployed in December 2015 on the Frontier chain, created from within another contract rather than by an account.

Key Facts

Deployer

0x2360f9...3b6a89

Deployment Block

725,536

Deployment Date

Dec 21, 2015, 12:39 PM

Code Size

463.0 B

Deployment Transaction: 0x169d96ae0da45bce...04eb4bc6abcff445

Description

A comment board that keeps nothing in storage. addComment takes an identifier and a block of text and emits a Comment event indexed by the poster and by the identifier, so the thread lives entirely in the log and readers reassemble it from events. Storage holds only an owner and a fee, both settable by the owner alone, with getOwner and getFee to read them back. Each instance is created by its parent store contract at deployment, which records the address it gets back and forwards comments to it.

Source Verified

Exact bytecode match(463 bytes)

Compiler: v0.1.7-

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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

Opcodes463

Unique Opcodes98

Jump Instructions24

Storage Operations8

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 Forum {
    address owner;
    uint fee;

    event Comment(address indexed poster, bytes32 indexed id, bytes text);

    modifier onlyOwner() {
        if (msg.sender != owner) throw;
        _
    }

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

    function setOwner(address _owner) onlyOwner {
        owner = _owner;
    }

    function addComment(bytes32 id, bytes text) {
        Comment(msg.sender, id, text);
    }

    function setFee(uint _fee) onlyOwner {
        fee = _fee;
    }

    function getOwner() constant returns (address) {
        return owner;
    }

    function getFee() constant returns (uint) {
        return fee;
    }
}