Frontier Era

The initial release of Ethereum. A bare-bones implementation for technical users.

2015-07-30 to 2016-03-14
Blocks 0 to 1,149,999
864 documented contracts

Contract 0x83c0bc08...

unknown

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

0x83c0bc...577289September 22, 2015

Contract 0xade1b9c4...

unknown

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

0xade1b9...ad8bf5September 22, 2015

Contract 0x4f2209a0...

unknown

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

0x4f2209...cb5dbcSeptember 22, 2015

Contract 0xbfb814b8...

unknown

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

0xbfb814...da5ac2September 22, 2015

Contract 0x7e05754c...

unknown

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

0x7e0575...2ee97aSeptember 22, 2015

Contract 0x01eb0112...

unknown

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

0x01eb01...0714f5September 22, 2015

Contract 0xfe80cdb9...

unknown

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

0xfe80cd...1e0d4dSeptember 22, 2015

Contract 0xca96df9e...

unknown

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

0xca96df...35ce0bSeptember 22, 2015

Contract 0x4942b8fe...

unknown

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

0x4942b8...2f3681September 22, 2015

Contract 0xcdb8b6ef...

unknown

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

0xcdb8b6...2fd345September 22, 2015

EthereumAlarmClock

wallet

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

0xb0059e...cc0cc1September 22, 2015

Coin

unknown

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

0x522a49...42922cSeptember 22, 2015

Pong

experimental

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

0x3a0cc9...e29fe5September 22, 2015

EthereumAlarmClock

unknown

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

0x223294...6036c2September 22, 2015

SerpentGamble

lottery

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0x3fb587...bb9815September 23, 2015

SerpentGamble

lottery

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0x87e8c8...90c060September 23, 2015

SerpentGamble

lottery

Intermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.

0xd9b49b...30f6a9September 23, 2015

SerpentGamble

lottery

The full serpent_gamble provably-fair betting dapp: bettors pick their own odds, the owner settles rounds via a commit-reveal seed, with an emergency refund.

0x593758...55b7d0September 23, 2015

Contract 0x7fc858e9...

unknown

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

0x7fc858...33af85September 23, 2015

Contract 0x36a86eec...

unknown

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

0x36a86e...d22826September 23, 2015

SerpentGamble

lottery

Sibling of 0x59375871 (SerpentGamble). The full serpent_gamble provably-fair betting dapp from ethereum/dapp-bin.

0x64f2e2...dabceeSeptember 24, 2015

GlobalRegistrar

registry

The canonical name registration contract hardcoded into go-ethereum — Ethereum's first mainnet naming system, mapping human-readable strings to addresses. A dir

0x339901...91a70cSeptember 24, 2015

HashReg

registry

The content hash registry hardcoded into go-ethereum — maps key hashes (contract code hashes, domain name hashes) to content hashes. Part of the three-contract

0x23bf62...520620September 24, 2015

URLhint

registry

The Ethereum Foundation's Frontier URL-hint registrar, hardcoded into go-ethereum.

0x73ed5e...c18626September 24, 2015
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