Byzantium Era

A lottery number you can pay by address: send ether here and it buys tickets for your chosen number on your behalf, refunding anything left over.

Exchange deposit wallet (UserWallet). Owner-only ETH collection and ERC-20 token sweeping with Deposit event logging.

Bittrex style deposit wallet with only a sweep entry point, built with Solidity 0.4.15.

A 625 cat collection released in December 2017, with its own ownership accounting written months before ERC721 was finished.

Deposit forwarder that pushes incoming ether straight to a bank address, with a separate operator key for sweeping leftover ether and ERC-20 balances.

One hundred numbered pet rocks sold from a rising price curve in December 2017, offering ownership and nothing else.

First Poloniex deposit forwarder on Ethereum, part of over 400,000 identical contracts. Compiled with solc 0.4.11, source verified by EthereumHistory.

Minimal delegatecall proxy. Forwards all calls to a hardcoded implementation address using DELEGATECALL, preserving the caller's storage context.

Exchange deposit wallet with ETH and ERC20 sweep functions. One of the most widely deployed bytecodes on Ethereum.

Token sweeper contract. Collects ERC20 balances from deposit addresses by calling sweep(tokenAddress) and forwarding tokens to a master wallet.

Token relay contract. Forwards ERC20 token transfers via transferToken(token, recipient, amount) on behalf of a configured owner.

ETH forwarder with configurable destination. Forwards incoming Ether to a parent address set at deployment, with an owner-only flush() method.

Minimal ETH forwarder. Hardcodes a destination address at deployment and unconditionally forwards all incoming Ether to it.

Deposit forwarder that reports each payment to its controller, reads the payout address from it, and forwards the full amount there.

Later, simpler build of the same settings-driven proxy: one lookup for the implementation, then a plain delegatecall with no return-size table.

Two-role token sweeper that builds the ERC-20 transfer selector at runtime.

Minimal contract that stores a single public string in state, exposed via the auto-generated m() getter. First of 281 identical siblings. Source verified by EthereumHistory.

Token collection wallet that moves an entire token balance to a chosen address, without the ERC223 callback handler.

Owner wallet that forwards ether to its owner, logs any call from a stranger with the full calldata, and lets the owner execute arbitrary calls.

Ninety-three bytes with one hardcoded destination: every payment received is transferred straight back out to the same address.

On-chain JPEG of a tabby cat: a 128x128 JFIF baseline image returned as a hex-text string by a single read() function. January 2018.

An ERC-20 token called FartCoin (FART) deployed in January 2018.

Exchange deposit wallet that collects ERC20 tokens via collect(tokenAddress, recipient, amount) and ETH via a payable fallback function.

Deposit address that forwards its ether and any ERC-20 balance to one fixed wallet, driven entirely by a controller account.