Private Lottery

other

0xd53096b3cf64...653e7f2cd710

FrontierContract #1,904Exact Bytecode MatchEdit this contract

Deployed October 12, 2015 (10 years ago)Block 371,471

Vitalik Buterin Serpent oracle fetcher (Oct 12, 2015). get(string) request contract; sweeps balance to 0xb3cd4c25 (send-before-return variant). Byte-for-byte cracked (Serpent @ f0b4128).

Frontier EraVerified Source

Historical Significance

Part of a series of private lottery contract experiments Vitalik deployed on mainnet in October 2015. The hardcoded 'cow' test key links these to pyethereum's classic test patterns.

Key Facts

Deployer

Vitalik Buterin(0x1db343...fa6ee6)

Deployment Block

371,471

Deployment Date

Oct 12, 2015, 08:20 AM

Code Size

422.0 B

Gas at Deploy

126,188

Deployment Transaction: 0x3b3d8c2cacde078f...3b0dba64eda56ce7

Description

Deployed October 2015 by Vitalik Buterin. A paid query contract written in Serpent with a single get(string) entry point: callers must send a minimum fee, the contract records a hash derived from the caller, value and input, emits a log event, and forwards the fee onward. Byte-identical siblings exist in this collection.

Source Verified

SerpentExact bytecode match(422 bytes)

Compiler: f0b4128

View verification proof

Serpent get(string) oracle fetcher, sibling of 0x7e7f6373. Compiled with ethereum/serpent @ f0b4128; exact creation+runtime match (404 bytes). Beneficiary 0xb3cd4c25; source orders the send before the return (vs return-then-send in the other two instances).

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

Opcodes422

Unique Opcodes102

Jump Instructions11

Storage Operations3

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Serpent)

# Submitted by EthereumHistory (ethereumhistory.com)
event GetRequest(url:string, sender:address, id:uint256, value:uint256)

def get(url:string):
    if msg.value >= 7000000000000000:
        self.storage[0] = sha3(block.prevhash + sha3(url:str) + msg.sender + msg.value * 2^160)
        log(type=GetRequest, url, msg.sender, self.storage[0], msg.value)
        send(0xb3cd4c2512402047ef4ddeb1ab9f8df400ce2d3f, self.balance)
        return(self.storage[0])

External Links

Etherscan Verified Source (if any)

Related contracts

SerpentGamble

Same deployer

Provably-fair betting game where players choose their own odds. The owner settles bets with a commit-reveal random seed. Includes a 2-day emergency refund.

0x034df8...200e2fSeptember 20, 2015

SerpentGamble

Same deployer

Sibling of 0x034dF870 (SerpentGamble). Provably-fair Serpent betting game; players choose their own odds, owner settles via commit-reveal seed, 2-day refund.

0x9ca7e9...fa8bb4September 21, 2015

SerpentGamble

Same deployer

Sibling of 0x034dF870 (SerpentGamble). Provably-fair Serpent betting game; players choose their own odds, owner settles via commit-reveal seed, 2-day refund.

0x75649a...176028September 21, 2015

SerpentGamble

Same deployer

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0xe1a99f...0d2457September 21, 2015

SerpentGamble

Same deployer

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0xdc00a9...15861fSeptember 21, 2015

SerpentGamble

Same deployer

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0xd0ed09...300b48September 21, 2015