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

Contract 0x5d3ffbb1...

token

Basic ethereum.org token template with name, symbol, decimals, balanceOf, and transfer. One of 200 identical deployments.

0x5d3ffb...af6d47February 1, 2016

1

token

Standard ethereum.org tutorial token (Homestead, Mar 2016): name/symbol/decimals metadata, a public balanceOf mapping and an overflow-checked transfer firing th

0x05d0d0...eda304February 3, 2016

Random

program

A minimal random number generator that stores a blockhash at deployment. Has a bug: the rand() function always returns 0.

0x77b7fa...19b6afFebruary 4, 2016

DepositWalletV2

unknown

Owner-controlled deposit wallet (Homestead, Feb 2016): a payable fallback logging Deposit(from, value), owner-only collect() that sends the balance to the owner

0x06e808...0ae56dFebruary 4, 2016

IPFSTest

program

A minimal contract storing a single IPFS CIDv0 hash on-chain as a public string. Deployed by Thomas Bertani / Oraclize on Feb 5, 2016.

0xf4a566...90bc6fFebruary 5, 2016

LoveCoin

token

Fixed-supply transfer token deployed as LoveCoin (LC) on Feb 6, 2016.

0x3e6a4c...17e984February 6, 2016

InflateCoin

token

Inflation toy token whose transfers credit recipients with twice the amount sent.

0xe6fe45...233236February 6, 2016

KingOfTheEtherThrone

token

Kieran Elby's redesigned successor throne, deployed Feb 6, 2016 โ€” three hours after the v0.3.0 throne fell silent in what he later called the 'Turbulent Age' tr

0xb336a8...f254d0February 6, 2016

MintCoin

unknown

Mineable toy token that dispenses 0.00000008 MC when called with the magic value 52013.

0x23b92f...de530aFebruary 8, 2016

NonceCoin

token

Quota-gated mint token that rewards every qualifying third step with a 50% balance increase.

0xa86acc...b9cb49February 8, 2016

HaHaCoin

token

Quota game token whose successful mint drains the contract reserve when the modulo target hits 1.

0x59bfd3...0950d3February 8, 2016

CoolCoin

token

Frontier-era mineable token (Feb 8, 2016). Anyone can call Mint(quota) to receive 100*quota CLC from the contract's stash.

0xc86d80...88c56dFebruary 8, 2016

Contract 0x4d20c702...

unknown

Identical-runtime instance of the ethereum.org 'Hello World' greeter (greet() + owner-only kill()), among 68 such Frontier deployments.

0x4d20c7...df9d7cFebruary 9, 2016

myKwh

token

Identical-runtime sibling. The ethereum.org 'advanced' MyToken (Homestead, Mar 2016): an issuer-minted token with mintToken, freezeAccount/FrozenFunds and the s

0x3cf9b4...9626c9February 10, 2016

Contract 0x2159850f...

token

Standard ethereum.org tutorial token (Homestead, Mar 2016): name/symbol/decimals metadata, a public balanceOf mapping and an overflow-checked transfer firing th

0x215985...803187February 10, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant A. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x1a3970...dd1076February 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant A. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x59a273...5c6786February 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant A. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x1f7504...647f30February 11, 2016

FoundationTipJar

dao

An early Ethereum smart contract that enabled direct, on-chain donations to the Ethereum Foundation and issued the original Unicorn token.

0xfb6916...c5d359February 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant B. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x8cb1f4...74105bFebruary 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant B. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x41a782...2dd790February 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1830B variant B. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0x6bbfe0...e840e6February 11, 2016

Congress

token

A Democracy DAO governance contract deployed by Ethereum Foundation UX Lead Alex Van de Sande (avsa) on February 11, 2016, implementing the tutorial contract fr

0xa8c94f...493511February 11, 2016

Unicorns

token

Unicorns (๐Ÿฆ„) token by avsa โ€” 1802B variant. Source recovered by bytecode analysis, verified on Etherscan and Sourcify.

0xe36905...c9c124February 11, 2016
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