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
989 documented contracts

Congress

token

Alex Van de Sande's Congress DAO from Dec 28, 2015: on-chain voting system for proposals with configurable quorum and majority threshold.

0x7f6b46...03f101December 28, 2015

Congress

token

Alex Van de Sande's Congress DAO from Dec 28, 2015: on-chain voting system for proposals with configurable quorum and majority threshold.

0x1e5cbb...b7ff63December 28, 2015

Congress

dao

A Congress DAO from the ethereum.org tutorial, deployed 28 December 2015, 23 minutes before the tutorial revision it came from was published.

0xe8e80d...4ed2daDecember 28, 2015

Doge-ETH Bounty DAO

dao

The Doge-Ethereum Bounty DAO created by avsa on Dec 28, 2015. Funded over 5,400 ETH in bridge development, holds 50,000 MistCoin. Active 2015-2021.

0xdbf03b...c8c6fbDecember 28, 2015

DAO

token

Direct December 2015 ancestor of The DAO, deployed by slock.it five months before the mainnet launch that triggered the Ethereum hard fork.

0x54715d...cb564dDecember 29, 2015

Contract 0xe6d67a9f...

unknown

A liveness canary for the Ethereum Alarm Clock, deployed 31 December 2015.

0xe6d67a...112eecDecember 31, 2015

Contract 0xd7a5e0ca...

unknown

A one slot bytes32 store from the first days of 2016 that logs who wrote to it.

0xd7a5e0...a1de54January 1, 2016

Store

utility

A one slot bytes32 store from the first days of 2016 that logs who wrote to it.

0x791e7f...f8a790January 1, 2016

Contract 0xd66cefef...

unknown

A one slot bytes32 store from the first days of 2016 that logs who wrote to it.

0xd66cef...47e5cfJanuary 1, 2016

Contract 0xe2deb698...

unknown

A one slot bytes32 store from the first days of 2016 that logs who wrote to it.

0xe2deb6...8d109cJanuary 2, 2016

Stub

unknown

A minimal owner-recording test contract Hudson Jameson deployed 89 seconds before his on-chain Marriage Registry. Runtime is the 6-byte empty body 0x606060405200.

0xd5d9ad...34c814January 2, 2016

Marriage Registry

registry

Records marriages and life events on the Ethereum blockchain with partner details, dates, and status tracking.

0x58641c...cc79f4January 2, 2016

Greeter

experimental

A classic Greeter contract from the official Solidity tutorial, storing and returning the string "Hello World!".

0x7350d2...acd373January 2, 2016

CanaryV6

utility

A liveness canary for the Ethereum Alarm Clock, deployed 3 January 2016.

0xfc8a24...12b5e1January 3, 2016

Contract 0xf9f0ce2e...

unknown

A one slot bytes32 store from the first days of 2016 that logs who wrote to it.

0xf9f0ce...76c8ccJanuary 3, 2016

Contract 0xce3d43fe...

unknown

A liveness canary for the Ethereum Alarm Clock, deployed 3 January 2016.

0xce3d43...5f2a7bJanuary 3, 2016

Contract 0xa57a759e...

dao

A one question poll from 2015 that only its own creator is allowed to vote in.

0xa57a75...52263eJanuary 3, 2016

Contract 0x2ddbbed8...

experimental

Byte-identical deployment of: The classic Frontier 'greeter' (Jan 2016): a mortal-derived contract storing a constructor-set greeting returned by greet(), with

0x2ddbbe...f98316January 5, 2016

Contract 0xb044496a...

unknown

A liveness canary for the Ethereum Alarm Clock, deployed 5 January 2016.

0xb04449...382495January 5, 2016

Contract 0xd8ec95d1...

unknown

A liveness canary for the Ethereum Alarm Clock, deployed 5 January 2016.

0xd8ec95...15d6a4January 5, 2016

Contract 0x8945302c...

experimental

An ethereum.org 'Hello World' greeter (mortal + greeter): greet() returns its stored greeting, kill() selfdestructs to the owner. One of 68 byte-identical Front

0x894530...8e7022January 5, 2016

Contract 0x89f82f0c...

experimental

A Frontier-era copy of the canonical ethereum.org greeter - greet() reads a stored string; the mortal base adds owner-only kill(). Shares its 366-byte runtime w

0x89f82f...a3b03fJanuary 5, 2016

Contract 0xfcbeba4f...

experimental

A greeter from the early ethereum.org docs: returns a stored greeting via greet(), self-destructs to owner via kill(). Byte-identical to 67 sibling contracts.

0xfcbeba...46ff48January 5, 2016

Contract 0x866b92e0...

unknown

A liveness canary for the Ethereum Alarm Clock, deployed 7 January 2016.

0x866b92...e31bfbJanuary 7, 2016
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