Frontier Era

The public EtherPot lottery, an August 2015 Frontier contract whose blockhash-based winner selection became an early cautionary tale about on-chain randomness.

Cyrus Adkisson experimental getter (Sep 2015) exposing the ether balance of a hardcoded address via getMyBalance(). Verified byte-for-byte with soljson v0.1.1.

A minimal Pong contract with an int8 getter/setter and owner-only selfdestruct. Simpler predecessor to the tutorial Pong at 0x3a0cc907.

Inter-contract communication tutorial. Ping calls Pong to retrieve a value, demonstrating cross-contract function calls in Solidity.

Inter-contract communication tutorial. Ping calls Pong to retrieve a value, demonstrating cross-contract function calls in Solidity.

Inter-contract communication tutorial. Ping calls Pong to retrieve a value, demonstrating cross-contract function calls in Solidity.

Classic 3:1 pyramid scheme with Bitcoin bridge integration, deployed September 7, 2015. 1 ETH to enter, 2.7 ETH payout every 3rd participant. Originally hosted

An early Frontier-era token contract implementing a pre-ERC-20 interface, deployed on September 8, 2015 by an address associated with the ENS name collectibletr

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

A tutorial contract testing two-dimensional array support in early Solidity.

A tutorial contract testing array passing and returning in Solidity function calls.

A tutorial contract testing struct definitions and for loops in early Solidity.

A tutorial contract that detects whether a caller is a contract or an externally owned account.

A provably-fair commit-reveal gambling contract from the Ethereum dapp-bin, deployed 47 days after Frontier genesis.

Inter-contract communication tutorial. Ping calls Pong to retrieve a value, demonstrating cross-contract function calls in Solidity.

Inter-contract communication tutorial. Ping calls Pong to retrieve a value, demonstrating cross-contract function calls in Solidity.

Target contract.

A minimal getter/setter proxy from the Oraclize team. set() forwards calls to a hardcoded target contract, get() returns constant 255.

Controller contract.

Pool5x contract.

Revised Pool5x lottery prototype by Bertani (Oraclize), deployed 17 blocks after v1. Stores 5x msg.value and emits debug log events.

Bertani's pre-hackathon prototype of InsurETH, deployed twelve hours before Hack The Block London opened.

A 57-byte contract deployed by the Ethereum Foundation wallet on September 20, 2015, 52 days after Frontier launch. Implements a single function foo() that retu

A 77-byte contract deployed by the Ethereum Foundation wallet on September 20, 2015. Implements foo() returning a 21-byte constant value, requiring the PUSH21 o