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

The earliest Coin stub on Ethereum mainnet - an empty sendCoin implementation from the ethereum.org tutorial, deployed August 2015.

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

A 10KB on-chain identity and social profile contract with 34 functions for managing name, bio, avatars, covers, topics, colors, and public keys.

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 official Greeter tutorial contract from ethereum.org, deployed on Day 2 of Ethereum mainnet with the greeting "Hello World!"

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.

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

The first decentralized messaging contract on Ethereum, whose only use was the deployer sending 'hello2!' to themselves on Frontier Day 1.

A Frontier-era Greeter contract with the message: 'Hello World!'

A Frontier-era Greeter contract with the message: 'Life at all costs, life whatever it may be'

A minimal string-storage contract hardcoding the name 'Etherparty', deployed 3 times on August 8, 2015 by the same wallet that deployed SimpleStorage.