Unknown Contracts

The earliest known Ethereum contract deployment containing executable runtime code.

The canonical Ethereum Greeter tutorial contract, deployed by Anthony Eufemio (Digix CTO, thanateros.eth) on August 7, 2015, nine days after the Ethereum Frontier genesis block.

One of the earliest chain-letter investment contracts on Ethereum, accepting 10 ETH per entry and redistributing funds to earlier participants. Deployed August 7, 2015, eight days after the genesis block.

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 per entry and redistributes to earlier participants.

The first lottery contract deployed on Ethereum mainnet, created August 9, 2015 by one of the earliest recorded Ethereum users. Built, tested with two participants, paid out, and then self-destructed within a single session.

An early Ethereum lottery contract, deployed August 9, 2015 by one of the network's earliest users as an iteration on a prototype deployed 42 minutes earlier. Remained on-chain and received queries over a decade later.

A 100-ETH chain-letter investment contract deployed August 9, 2015, part of an early family of Frontier-era financial experiment contracts with variants accepting 0.1 ETH, 10 ETH, and 100 ETH per entry.

A "King of the Hill" game contract exploring behavioral economics — players bid to become the receiver, and the last bidder standing after 200 blocks wins 25% of the pot.

An early Frontier-era dice gambling contract, notable for revealing a bytecode discrepancy between block explorers.

The crowdsale contract for Augur, the first dApp to raise funds on Ethereum after Ethereum itself, collecting over $5.2 million from August 17 to October 1, 2015.

The second contract deployed by Piper Merriam on September 22, 2015, within hours of the Ethereum Alarm Clock v1, representing the first same-day iteration of the scheduling service.

A Solidity date and time utility library deployed by Piper Merriam on October 6, 2015, providing functions to parse Unix timestamps into human-readable date components for use in smart contracts.

A Solidity string utility library authored by Piper Merriam and deployed on October 12, 2015, providing functions for converting between unsigned integers and string representations in bytes32 format.

The first post-v0.9 release of Etheria, a fully on-chain hexagonal tile world and one of the earliest NFT projects on Ethereum, deployed October 22, 2015.

Etheria v1.1—an early on-chain hexagonal tile world and pioneering NFT project—deployed on October 29, 2015, with new locking and naming features.

Etheria v1.2—the third iteration of the first on-chain hexagonal tile game and proto-NFT project—deployed November 1, 2015.

A later iteration of Piper Merriam's Ethereum Alarm Clock, deployed on December 23, 2015 as the fifth of five contracts deployed in rapid succession, representing a major redeployment of the scheduling service.

Early Digix Gold token contract address referenced in Digix documentation and community support threads (2016).

SingularDTV crowdfunding contract — managed the October 2016 token sale for the Ethereum-based decentralized entertainment platform, raising $7.5M in 17 minutes.