Frontier Era
The initial release of Ethereum. A bare-bones implementation for technical users.
EF1 ABI Test (bar(uint256))
unknownA 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
0x441e72...fee0f9September 20, 2015InsurETH
programWinning entry of the Programmable Assets challenge at Hack The Block London (September 2015), built by Francesco Canessa, Kristina Butkute, and Thomas Bertani (
0x88d675...2cfbaaSeptember 20, 2015SerpentGamble
unknownProvably-fair betting game where players choose their own odds. The owner settles bets with a commit-reveal random seed. Includes a 2-day emergency refund.
0x034df8...200e2fSeptember 20, 2015SerpentGamble
unknownSibling of 0x034dF870 (SerpentGamble). Provably-fair Serpent betting game; players choose their own odds, owner settles via commit-reveal seed, 2-day refund.
0x9ca7e9...fa8bb4September 21, 2015Contract 0xacaf7d85...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0xacaf7d...08c73eSeptember 21, 2015SerpentGamble
unknownSibling of 0x034dF870 (SerpentGamble). Provably-fair Serpent betting game; players choose their own odds, owner settles via commit-reveal seed, 2-day refund.
0x75649a...176028September 21, 2015Contract 0x76882df0...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x76882d...752874September 21, 2015Contract 0x54232b2c...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x54232b...7a6dc0September 21, 2015SerpentGamble
unknownIntermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.
0xe1a99f...0d2457September 21, 2015Contract 0xbc7d3a09...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0xbc7d3a...694a7aSeptember 21, 2015Contract 0x9f6e2b43...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x9f6e2b...f92990September 21, 2015Contract 0xc6c5d639...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0xc6c5d6...23aeaaSeptember 21, 2015Contract 0x926ad451...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x926ad4...0b52acSeptember 21, 2015Contract 0x6eeb6703...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x6eeb67...0266f3September 21, 2015SerpentGamble
unknownIntermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.
0xdc00a9...15861fSeptember 21, 2015SerpentGamble
unknownIntermediate build of serpent_gamble, a provably-fair betting dapp (Bet/Win/Loss/NewSeed), related to verified sibling 0x59375871. Source not yet reconstructed.
0xd0ed09...300b48September 21, 2015Coin
unknownA Frontier-era subcurrency with dual-send pattern: direct transfers and exchange-authorized transfers. Deployed Sep 21 2015.
0xff2947...0f9d6aSeptember 22, 2015Contract 0x7ccd6318...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x7ccd63...b280f6September 22, 2015Contract 0x2858be93...
unknownAug 8 2015 deploy by 0x8674c218 — one of the most prolific contract deployers of Ethereum's first day. Sibling of the verified MessagingContract / Ponzi / Messa
0x2858be...457d1aSeptember 22, 2015Contract 0x83c0bc08...
unknownAug 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, 2015Contract 0xade1b9c4...
unknownAug 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, 2015Contract 0x4f2209a0...
unknownAug 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, 2015Contract 0xbfb814b8...
unknownAug 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, 2015Contract 0x7e05754c...
unknownAug 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