Frontier Era

A public claim register by Semiel: anyone can write a message onchain and it is kept with their address and the block it arrived in.

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

A redeemable voucher token: only the owner can hand units out, and a holder redeems them back to the owner with a message attached.

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

Balance bookkeeping for the Ethereum Alarm Clock, held in a library

An ordered, queryable index over contract storage, held in a library

String comparison helpers, held in a library

The call lifecycle for the Ethereum Alarm Clock, held in a library

A rotating pool of participants that turns over on a fixed schedule, held in a library

The scheduling logic for the Ethereum Alarm Clock, held in a library

The Ethereum Alarm Clock entry point, which creates one contract per scheduled call

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

One million units at two decimals under a Greek delta ticker.

A single scheduled call, created by the scheduler and waiting for its target block

A later revision of the ethereum.org crowdsale tutorial, set to raise 100 ether in 30 minutes with no reward token.

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

A November 2015 test harness that calls move(uint8) back on whoever pings it, cycling through four directions.

The Solidity documentation storage example, given a public variable and an initialising constructor

The Solidity documentation storage example, given a public variable and an initialising constructor

A token contract deployed by Vitalik Buterin, compiled from currency.se (Serpent) in the ethereum/dapp-bin repository. Deployed days after Devcon 1 and one week before EIP-20 was published.

A one question poll from 2015 that only its own creator is allowed to vote in.

Safe remote purchase escrow holding a double deposit from both sides

1000x1000 pixel canvas on Ethereum - buy, color, and trade pixels on-chain