Utility Contracts

Small single-purpose helpers — forwarders, sweepers, canaries, timers and other plumbing.

371 documented contracts

Association

The ethereum.org democracy tutorial: token holders propose a transaction, vote on it for a fixed period, and the contract sends it if it passes.

0x051cd2...764deeFebruary 8, 2016

Association

The ethereum.org democracy tutorial: token holders propose a transaction, vote on it for a fixed period, and the contract sends it if it passes.

0x827864...38ea91February 17, 2016

currency

An early coin contract with balance transfers and a delegated-spending approval system.

0x6fef49...2c4518February 29, 2016

greeter

The guide's greeter, with greet renamed to returnContract

0xb89a0c...f20bfeMarch 4, 2016

Contract 0xa57e9f9e...

The go-ethereum Contract Tutorial greeter, deployed with the greeting: Hello World!

0xa57e9f...183b1bMarch 5, 2016

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.

0xba8ee7...052785March 10, 2016

owned

The owned ownership mixin at 153 bytes, deployed 11 March 2016.

0x21c6ff...c14197March 11, 2016

creatorBalanceChecker

A teaching contract that records its creator's ether balance at the moment of deployment and keeps it, so the snapshot can be compared with the live value.

0x5433fe...fe7efdMarch 11, 2016

owned

The bare owned base contract, deployed alone at 326 bytes on 12 March 2016.

0x2800e7...e5ed72March 12, 2016

Association

The ethereum.org democracy tutorial: token holders propose a transaction, vote on it for a fixed period, and the contract sends it if it passes.

0x8bfd7f...2aea40March 16, 2016

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.

0x9af2b1...3a4858March 17, 2016

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.

0xb83820...872c31March 24, 2016

token

A shares contract that reports every balance as zero until three rounds of delegation have run, then answers with the delegated weight.

0xe81537...03263bMarch 26, 2016

Association

The ethereum.org democracy tutorial: token holders propose a transaction, vote on it for a fixed period, and the contract sends it if it passes.

0x6960a6...8464a1March 26, 2016

Contract 0xdbbf294d...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0xdbbf29...30caceApril 4, 2016

Contract 0x118a31bf...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0x118a31...f45f0aApril 4, 2016

Contract 0xabf5db4d...

Byte-identical deployment of: Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-schedu

0xabf5db...3b3d41April 4, 2016

Contract 0xe7dd4e0d...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0xe7dd4e...4c5ebaApril 4, 2016

Contract 0x9b20d7fb...

Identical-runtime sibling. Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-schedulin

0x9b20d7...11b12dApril 4, 2016

Contract 0xa78f6a84...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0xa78f6a...758767April 4, 2016

Contract 0x2a90b69e...

Byte-identical deployment of: Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-schedu

0x2a90b6...1f8d88April 4, 2016

Contract 0xd98be306...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0xd98be3...b1cb60April 5, 2016

Contract 0xb93ca565...

Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-scheduling a wake-up via Piper Merri

0xb93ca5...df5746April 5, 2016

Contract 0x9723f037...

Byte-identical deployment of: Block-height timelock (Homestead, Apr 2016) that releases its full ETH balance to a fixed beneficiary at releaseBlock, self-schedu

0x9723f0...6b2573April 6, 2016
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