Frontier Era

Tutorial-derived coin contract (Solidity v0.1.1), one of multiple token instances deployed by the same address on Aug 8, 2015.

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

A 6-line contract storing a single public string, deployed Day 9 of Ethereum by a prolific early experimenter who shipped 18 contracts in one week.

The Ethereum Foundation's primary treasury wallet - a 4-of-7 multisig written by Gavin Wood, deployed 9 days after mainnet launch. The ancestor of the Parity mu

Coin tutorial stub — mapping getter + empty function returning default bool.

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

Ethereum "greeter" tutorial with ABI-encoded string constructor arg.

An on-chain messaging contract that adds a nonce for unique message hashing, part of a four-deployment messaging iteration on Frontier.

A deployment of the nonce-based messaging contract, identical interface to rank 45 but by a different deployer.

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

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

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.

Tutorial-derived coin contract (Solidity v0.1.1), one of multiple FirstCoin instances deployed by the same address on Aug 8, 2015.

Tutorial-derived coin contract (Solidity v0.1.1), one of multiple FirstCoin instances deployed by the same address on Aug 8, 2015.

Tutorial-derived coin contract (Solidity v0.1.1), one of multiple token instances deployed by the same address on Aug 8, 2015.

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

Commit-reveal lottery prototype by the EarlyLottery developer. buyTicket(bytes32) takes a hash commitment. submitSecret reveals the secret. payout() sends to wi

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