Frontier Era

Sep 24, 2015 proto-DAO experiment — eight months before TheDAO. One of 10 byte-identical sister contracts deployed by 0x7931c901 in a 40-minute burst.

Sep 24, 2015 proto-DAO experiment — eight months before TheDAO. One of 10 byte-identical sister contracts deployed by 0x7931c901 in a 40-minute burst.

Sep 24, 2015 proto-DAO experiment — eight months before TheDAO. One of 10 byte-identical sister contracts deployed by 0x7931c901 in a 40-minute burst.

Sep 24, 2015 proto-DAO experiment — eight months before TheDAO. One of 10 byte-identical sister contracts deployed by 0x7931c901 in a 40-minute burst.

Sep 24, 2015 proto-DAO experiment — eight months before TheDAO. One of 10 byte-identical sister contracts deployed by 0x7931c901 in a 40-minute burst.

Sibling of 0x59375871 (SerpentGamble). The full serpent_gamble provably-fair betting dapp from ethereum/dapp-bin. This deployment later self-destructed.

The Coin contract from the Solidity tutorials. sendCoin and coinBalanceOf. One of 83 identical deployments.

Unverified Serpent contract deployed by Vitalik Buterin (Sept 2015); 8 functions and 4 custom events. Purpose not yet determined from bytecode.

Arbiter registry by Vitalik Buterin (Sep 2015). Pay 1+ ETH to list yourself. Fee decays 50%/month. One of the earliest on-chain reputation systems on Ethereum.

On-chain escrow by Vitalik Buterin (Sep 2015). Two parties designate arbiters; majority vote releases funds. One of the earliest smart contract dispute systems.

On-chain lottery from October 2015. Players buy tickets (1-25+ ETH with bulk discounts) in rounds of 1,000. Winners selected via combined server seed, client en

A tutorial contract testing fixed-size array passing as function parameters in Solidity.

A tutorial contract testing fixed-size array passing as function parameters in Solidity.

Second deployment of Vitalik's on-chain escrow (Oct 2015). Arbiters vote to release escrowed funds. Identical bytecode to the Sep 28 instance.

Royalty splitter for Imogen Heap's Tiny Human, the first commercial music release with payments settled by an Ethereum smart contract (October 2015).

A minimal event-logging contract with a single function log(uint256) that emits MyEvent. Compiled with soljson v0.1.2, optimizer off.

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

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

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

Vitalik's first multi-auction ad registrar (Oct 6, 2015). EXACT byte-for-byte match.

Deployment of the official Solidity Greeter tutorial, initialized with "Hello World!" and compiled with soljson v0.1.1.

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 com