StringVoting

other

0x61a9c3ee0fdc...f277bc545606

FrontierContract #21Source VerifiedEdit this contract

Deployed August 8, 2015 (11 years ago)Block 50,797

A single-function voting contract where users cast votes by sending ETH with a string candidate name, from the same developer who built MovieVoting.

Frontier EraVerified Source

Historical Significance

A string-based variant of the bytes32 MovieVoting contract, showing the same developer experimenting with different Solidity data types during Frontier week 1.

Context

Deployed by the MovieVoting developer during Ethereum Frontier's first days, iterating between bytes32 and string-based voting interfaces.

Key Facts

Deployer

0x290572...9de90b

Deployment Block

50,797

Deployment Date

Aug 8, 2015, 12:45 AM

Code Size

416.0 B

Gas at Deploy

47,921

Deployment Transaction: 0xceb87a06673e2465...86953ea1951b8ead

Description

A voting contract deployed at block 50,797 (August 2015). Users vote by calling vote(string) with ETH attached. Votes are tracked by sha3 hash of the candidate name, with new candidates added to a dynamic array. Same deployer (0x2905726ed1) as the MovieVoting contracts at ranks 22 and 23.

Source Verified

SolidityNear-exact bytecode match

Compiler: soljson

near_exact_match: vote(string) selector confirmed. Source structure reconstructed from bytecode disassembly showing payable check, sha3 hashing, dynamic array push, and ETH accumulation. Same developer as MovieVoting (ranks 22/23).

Heuristic Analysis

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

Detected Type: other

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

Opcodes416

Unique Opcodes60

Jump Instructions19

Storage Operations12

Verified Source Available

Source verified through compiler archaeology (near-exact bytecode match).

Show source code (Solidity)

contract StringVoting {
    mapping(bytes32 => uint) bids;
    string[] candidates;

    function vote(string candidate) {
        if (msg.value == 0) return;
        bytes32 h = sha3(candidate);
        if (bids[h] == 0) {
            candidates.push(candidate);
        }
        bids[h] += msg.value;
    }
}

External Links

Etherscan Verified Source (if any)

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