Frontier Era

A Frontier-era Greeter with the message: 'I am on the etherchain!!'

Wallet proxy stub generated by the Mist Wallet factory. Forwards all calls via CALLCODE to the master Ethereum Foundation Wallet contract at 0x273930d2.

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

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.

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

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

A 108-byte contract deployed by the Ethereum Foundation wallet on September 20, 2015. Written in Solidity v0.1.4, it implements bar(uint256) returning x + 2. De

A Frontier-era subcurrency with dual-send pattern: direct transfers and exchange-authorized transfers. Deployed Sep 21 2015.

The first deployment of Piper Merriam's Ethereum Alarm Clock, a smart contract protocol for scheduling transactions at future block numbers, launched on Septemb

Identical contract to 0xFF2947 — same bytecode, same source. Deployed one day later, Sep 22 2015.

A Pong contract variant that receives ETH via send(), testing value transfer between contracts.

The second contract deployed by Piper Merriam on September 22, 2015, within hours of the Ethereum Alarm Clock v1, representing the first same-day iteration of t