Frontier Era

Doubler drain contract with hardcoded owner

One of the first viral Ethereum dapps, deployed January 23, 2016 by Kieran Elby. Players competed to hold the throne by paying an increasing claim price. The co

The classic Frontier 'greeter' (Jan 2016): a mortal-derived contract storing a constructor-set greeting returned by greet(), with an owner-only kill().

A gambling contract where players bet at least 1 finney for a chance to win 10% of the balance. Wins also donate to the Ethereum Foundation.

One hundred thousand units at two decimals, held by a minter named at deployment.

One of the earliest Oraclize-powered smart contracts on Ethereum — a YouTube views sponsorship bounty deployed January 25, 2016.

Jan 2016 ELC token using the Ambisafe Ambi v1 multi-authority framework with on-chain PoS rewards.

A minimal ERC20 token with allowances: balanceOf, allowance, totalSupply, transfer, approve, transferFrom, with Transfer/Approval events. Guards balance, allowa

ethereum.org Stakeholder Association DAO (Jan 29, 2016). German developer test with NurTesting token. 8 ETH locked. Exact creation TX match.

A Congress DAO with separate voting and proposing rights, deployed by Alex Van de Sande on 29 January 2016.

The go-ethereum wiki tutorial token: ten thousand units to its creator, a sendCoin transfer and a getBalance query.

The classic Frontier 'greeter' (Jan 2016): a mortal-derived contract storing a constructor-set greeting returned by greet(), with an owner-only kill(). (cluster

The Solidity-documentation 'Coin' subcurrency (Homestead, Jan 2016) deployed under a mismatched contract name, leaving Coin() as a public function that lets any

The Ethereum Alarm Clock Scheduler contract by Piper Merriam — one of the earliest utility smart contracts on Ethereum, enabling time-based scheduling of future

A liveness canary for the Ethereum Alarm Clock, deployed 31 January 2016.

A liveness canary for the Ethereum Alarm Clock, deployed 31 January 2016.

The first of five PreVNK token deployments made in a single 96 minute session on 31 January 2016, carrying the name testVUNK and a supply of 1,000,000.

A 1,000 unit rehearsal of the PreVNK token contract, deployed an hour into the team's session on 31 January 2016.

The last rehearsal of the PreVNK token, deployed 13 minutes before the production contract with a supply of 5,000.

The production PreVNK token, whose authors published its exact Solidity source to GitHub nine minutes after deploying it.

Basic ethereum.org token template with name, symbol, decimals, balanceOf, and transfer.

Standard ethereum.org tutorial token (Homestead, Mar 2016): name/symbol/decimals metadata, a public balanceOf mapping and an overflow-checked transfer firing th

Named with the digit one and ticketed with a Greek alpha, and exactly one unit exists.

A minimal random number generator that stores a blockhash at deployment. Has a bug: the rand() function always returns 0.