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
530 documented contracts

EthereumAlarmClock

unknown

A later iteration of Piper Merriam's Ethereum Alarm Clock, deployed on December 23, 2015 as the fifth of five contracts deployed in rapid succession, representi

0xe109ec...23be2aDecember 23, 2015

TestCallExecution

unknown

Test contract for Piper Merriam's Ethereum Alarm Clock, deployed December 2015. Verifies the scheduler can execute set/register/do calls correctly.

0x685308...9a751dDecember 23, 2015

Congress

token

Alex Van de Sande's Congress DAO from Dec 28, 2015: on-chain voting with member registry (mapping) and configurable quorum.

0xb3d47f...7c6c0cDecember 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.

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

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

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

other

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

0x7350d2...acd373January 2, 2016

Contract 0x2ddbbed8...

unknown

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 0x8945302c...

unknown

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...

unknown

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...

unknown

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

ShippingEscrow

program

A shipping escrow contract with buyer/seller structs, late delivery penalties, and IPFS cargo documentation.

0x50fb80...edbb59January 9, 2016

ShippingEscrow2

program

A shipping escrow contract with public struct getters, late delivery penalties, and IPFS cargo documentation. Sibling of ShippingEscrow with added buyer/seller/

0x47618f...f11b45January 9, 2016

ShippingEscrow2

program

Identical clone of ShippingEscrow2 (0x47618f). Shipping escrow with public struct getters, deployed by the same developer on the same day.

0xbfb62a...22e668January 9, 2016

Directory

library

DigixDAO typed-collection storage library (Address to bytes/address/bool maps; insert/remove/contains). Anthony Eufemio, Nov 2015. 1 of 9 clones.

0xbce3b5...64bac0January 9, 2016

Ledger Storage

unknown

DigixDAO marketplace ledger storage: maps (uint256 id, address) to records of amount, timestamp and state. Anthony Eufemio, Jan 2016. 7 identical clones.

0x35e1d3...7c2e6dJanuary 9, 2016

DigixConfiguration

other

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

0xc0a2b0...dfbf56January 9, 2016

Directory

library

DigixDAO typed-collection storage library (Address to bytes/address/bool maps; insert/remove/contains). Anthony Eufemio, Nov 2015. 1 of 9 clones.

0x6fb339...164bd9January 9, 2016

Ledger Storage

unknown

DigixDAO marketplace ledger storage: maps (uint256 id, address) to records of amount, timestamp and state. Anthony Eufemio, Jan 2016. 7 identical clones.

0x4c8e1e...92b8d9January 9, 2016

DigixConfiguration

other

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

0x2f7764...ff9d6cJanuary 9, 2016

Directory

library

DigixDAO typed-collection storage library (Address to bytes/address/bool maps; insert/remove/contains). Anthony Eufemio, Nov 2015. 1 of 9 clones.

0x91f239...69827fJanuary 9, 2016
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