Frontier Era

A pay-to-send on-chain email service (Serpent): email(to, subject, body) emits an Email event with the three strings if the caller pays at least 0.007 ETH.

Part of the first decentralized virtual world on Ethereum, deployed October 31, 2015. A fully on-chain hexagonal tile world.

The classic Frontier 'greeter' (Nov 2015): a mortal-derived contract storing a constructor-set greeting returned by greet(), with an owner-only kill().

The prototype token that inspired ERC-20, deployed by Fabian Vogelsteller on November 3, 2015, sixteen days before he submitted the ERC-20 proposal.

bitcoin: An early experimental Ethereum token created in 2015

An early token contract deploying the MyToken template as Whitcoin (WHIT) on November 3, 2015, the same day the canonical MistCoin was created, illustrating the

A MyToken template deployment by collectibletrust.eth on November 3, 2015, linking the same deployer responsible for the pre-ERC-20 currency contract from Septe

An early token named Bizilicas (BiZ) deployed on November 3, 2015 using the MyToken template, one of several tokens created on the same day as the canonical Mis

Deployment of the classic Solidity tutorial Coin contract with a default supply of 5,000 tokens and a CoinTransfer event.

Deployment of the classic Solidity tutorial Coin contract with a default supply of 500 tokens and a CoinTransfer event.

Standard ethereum.org tutorial token (Frontier, Nov 2015): name/symbol/decimals metadata, a public balanceOf mapping and an overflow-checked transfer firing the

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.

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

An Oraclize price ticker that fetches the ETH/Bitcoin (ETH/XBT) rate from Kraken, deployed at DEVCON1 in November 2015.

The classic Ethereum Hello World contract. mortal base with kill(), greeter with greet(). One of 111 identical deployments.

Dead man's switch: owner pings to stay alive, trustee can withdraw after 1000 seconds of inactivity

A token-weighted governance contract deployed by Avsa on Dec 3, 2015, using MistCoin as voting shares. 0.1 ETH remains locked after 10 years.

An ethereum.org 'Hello World' greeter (mortal + greeter): greet() returns its stored greeting, kill() selfdestructs to the owner. One of 68 byte-identical Front

SmartShipp token (Dec 6, 2015). ethereum.org tutorial token with name, symbol, decimals. 10 ETH permanently locked. Exact creation TX match.

An early Ethereum token named SubEthaNomic (SEN), deployed on December 14, 2015, whose name references the Sub-Etha network from The Hitchhiker's Guide to the G

A simple key-value store contract with set, get, and kill functions, deployed during the Frontier era.

A 2015 time-lock vault: deposit ETH to lock it ~20 years, withdraw after it expires.

A test contract that checks if the caller matches a hardcoded admin address, with kill and get functions.

A test contract that writes a bool flag based on whether the caller matches a hardcoded admin address, with kill, get, and getBool functions.