Frontier Era

Vitalik Buterin private lottery (Oct 2015). Single function get(string), minimum 0.007 ETH, using sha3+blockhash for randomness. Source not in any public repo.

Vitalik Buterin private lottery (Oct 2015). Single function get(string), minimum 0.007 ETH, using sha3+blockhash for randomness. Source not in any public repo.

Vitalik Buterin private lottery (Oct 2015). Three functions, including a bet (min 0.008 ETH) that calls an internal get(string) with hardcoded odds.

Serpent contract in Vitalik's Oct-2015 paid-query / lottery family (628-byte runtime).

Vitalik Buterin private lottery (Oct 2015). Three functions, including a bet (min 0.008 ETH) that calls an internal get(string) with hardcoded odds.

Requests off-chain data from a URL through an external fetcher contract and records the returned result on-chain by emitting an event.

Vitalik Buterin private lottery (Oct 2015). Single function get(string), minimum 0.007 ETH, using sha3+blockhash for randomness. Source not in any public repo.

A Solidity string utility library authored by Piper Merriam and deployed on October 12, 2015, providing functions for converting between unsigned integers and s

Owner-only self-destruct contract from the Ethereum Solidity tutorial. Calls suicide(owner) when the owner calls kill().

Owner-only self-destruct contract from the Ethereum Solidity tutorial. Calls suicide(owner) when the owner calls kill().

Sibling of 0xa619c3df (ListLogs). On-chain log aggregator: records strings as events and marks break-points by block. This deployment later self-destructed.

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.

This is the first of the 4 Etheria smart contracts, the first NFT collection on Ethereum.

adStorer auction registry by Vitalik Buterin (Oct 2015). Manages 8 ad auction slots. From dapp-bin ether_ad. Intermediate version, source not in public repo.

Vitalik's 2015 ad-auction sandbox. Spawned 8 child auctions across 4 open-bid and 4 sealed-bid mechanisms.

Piper Merriam's StringLib string-utility library — exact bytecode match.

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.

The first scheduled-transaction service on Ethereum, enabling smart contracts to schedule future function calls—deployed by Piper Merriam in October 2015.

The hello-world of Solidity: multiply(x) returns x*7. The ethereum.org tutorial contract. 120 copies deployed Sep 2015 through Feb 2016.

A minimal on-chain logging contract: addLog(s) emits a Log(string) event and addBreak() records the current block number as a section marker.

Variant of the ethereum.org 'Dapps for Beginners' subcurrency (Frontier 2015): sendCoin transfer, public coinBalanceOf mapping, CoinTransfer event, token() mint

An early Ethereum token contract deployed October 26, 2015 by Fabian Vogelsteller, one week before MistCoin. Likely a prototype of the ERC-20 standard Fabian wa

The canonical ethereum.org 'Hello World' greeter (mortal + greeter): greet() returns a stored greeting; kill() selfdestructs to the owner. One of 68 identical-r

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.