Utility Contracts

The bonded caller pool of the Ethereum Alarm Clock: callers post a bond, take turns being the designated executor, and forfeit it if they miss.

A call forwarder from the Ethereum Alarm Clock: it relays a call to any address, and only the scheduler that created it may ask.

An ownership holder with no access control: it stores one address and any account at all can overwrite it.

A two function ownership holder from October 2015 whose setter has no access control, so any address can take it over.

Delegated voting with a proposal count fixed at deployment

Etheria v0.7, the fatally bugged proto its author could never reproduce

A standalone test of the Etheria hex coordinate bounds check

The Etheria hex bounds check with the absolute value missing its else branch

The Etheria hex bounds check in the form that reached Etheria v0.85

The Etheria hex bounds check paired with the byte extractor

Etheria v0.8, the version where anyone could accept a bid on anyone's tile

The earliest surviving Etheria block definition store, with a self locking initializer

The Etheria block definition store with the initializer lock repaired

Elevation storage for a pre release Etheria, sealed when the last column lands

Block shape storage for a pre release Etheria, with the inner loop bound wrong

Block shape storage for a pre release Etheria, with a dynamic attachment list

Etheria v0.85, deployed 17 October 2015. Its author's published file is a later reconstruction; this is the source that compiles to the bytecode.

On-chain log aggregator (Serpent, list_logs/main.se): addLog(v) emits a Log(string) event; addBreak() marks the current block as a section boundary.

The store behind the ether_ad advertising dapp, holding eight auctioned ad slots

One of the eight ether_ad advertising slots, run as an open ascending auction

One of the eight ether_ad advertising slots, run as an open ascending auction

One of the eight ether_ad advertising slots, run as an open ascending auction

One of the eight ether_ad advertising slots, run as an open ascending auction

The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.