Utility Contracts
Small single-purpose helpers — forwarders, sweepers, canaries, timers and other plumbing.
CrowdSale
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0xcb09a0...e5dfdaAugust 22, 2015Contract 0x3d4a5a4b...
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0x3d4a5a...468000August 23, 2015Greeter
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!
0xff9bc7...3ea8d5August 24, 2015Greeter
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!
0x4219ce...ce242bAugust 24, 2015Greeter
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!
0xc9f5e3...86da86August 24, 2015Contract 0x714de2da...
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello world!, naan oru enthiran!
0x714de2...197554August 24, 2015Ballot
Delegated voting over five proposals, with the chairperson handing out voting rights
0x640fa6...b57e8aAugust 25, 2015URLhint
A registry mapping a content hash to the URL it can be fetched from, stored in 32-byte pieces, claimable by whoever registers it first.
0xe76f21...16e944August 25, 2015HashReg
A single-owner key to value registry: whoever claims ownership first can then map any 256-bit key to any 256-bit value.
0xfeee3a...d1d0b2August 25, 2015Contract 0x62697e00...
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0x62697e...085ce0August 25, 2015Contract 0x27b86cb2...
The go-ethereum Contract Tutorial greeter, deployed with the greeting: 1... 2... 3...
0x27b86c...b091faAugust 25, 2015Contract 0xd9ccf0f2...
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0xd9ccf0...4ceb28August 25, 2015Contract 0xa7ccc24f...
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0xa7ccc2...d9cd63August 25, 2015Democracy
Token-weighted voting on proposals that execute a call when they pass
0x27fd1c...3f38b1August 25, 2015Contract 0x8a89151c...
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Ciao Annalisa!
0x8a8915...ca487eAugust 26, 2015Contract 0xc7e2ad6a...
The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.
0xc7e2ad...e49c8bAugust 26, 2015Contract 0xd8c9dc07...
The 2015 ethereum.org democracy tutorial under its original name: token holders propose payments, vote a position, and the contract pays out if the vote passes.
0xd8c9dc...4f2940August 26, 2015Contract 0xdd1111b9...
The go-ethereum Contract Tutorial greeter, deployed with the greeting: test
0xdd1111...5c4595August 26, 2015Contract 0xc38a04be...
The go-ethereum Contract Tutorial greeter, deployed with the greeting: test
0xc38a04...02dfa5August 26, 2015Greeter
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!
0xa1e911...9889cdAugust 27, 2015Refund
An 86-byte contract that returns your ether: any plain transfer is refunded to the sender while its single storage slot stays zero.
0x27f7eb...fac218August 27, 2015Lotto
EtherPot with rounds ten blocks long, deployed to exercise the payout path
0x396864...d0edb7August 27, 2015Lotto
EtherPot, a blockhash lottery that runs in rounds and pays out in subpots
0xffd0ac...e02821August 27, 2015Greeter
The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!
0x0d3533...2ff773August 28, 2015