Unclassified Contracts

A raw bytecode test deployment by Linagee on Frontier Day 1 - the classic 0xdeadbeef pattern.

A raw bytecode test deployment by Linagee on Frontier Day 1 - the classic 0xdeadbeef pattern.

A raw bytecode test deployment by Linagee on Frontier Day 1 - the classic 0xdeadbeef pattern.

One of the earliest smart contracts on Ethereum, deployed August 7, 2015 (block 48,790). A pure function that finds the smallest prime factor of any number.

PrimeChecker contract. Identical bytecode to 0x66d796e7 -- smallestfactor(uint256) returns the smallest prime factor, or n if prime. Deployed Aug 7, 2015 by the

A small-denomination chain-letter investment contract paired with a 10-ETH variant, deployed August 7, 2015 by the same address. Accepts approximately 0.1 ETH p

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

Pay-to-vote bidding on bytes32 keys with append-only movie list.

A token contract with built-in escrow functionality, combining the dapp-bin BasicCoin interface with deposit and withdrawal operations.

A deployment of the CoinEscrow contract with identical function interface to rank 28, by a different deployer.

One of the earliest messaging contracts on Ethereum, allowing users to send on-chain messages stored by content hash.

An upgraded on-chain messaging contract with per-address message tracking and delete functionality, from the same Frontier developer who built the simpler Messa

An early Frontier investment contract where users deposit ETH and can withdraw their balance, with an investor counter.

Aug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa

An on-chain messaging contract with per-address tracking and delete functionality, by the same Frontier developer who iterated on messaging across four deployme

The 8 August 2015 messaging contract whose sendMessage always reverts, indexing a hash array that is never lengthened.

An on-chain messaging contract from 8 August 2015 whose sendMessage only advances the nonce and stores nothing.

A redeployment six minutes later of the same unfinished messaging contract, byte for byte identical.

The 8 August 2015 messaging contract where sendMessage first writes a message, keyed by the nonce.

The seventh iteration of an on-chain messaging system by the most prolific Frontier developer, featuring nonce-based message hashing and delete capability.

The eighth iteration of an on-chain messaging system by the most prolific Frontier developer, featuring nonce-based message hashing and delete capability.

Aug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa

Aug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa

Aug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa