Ninety-three bytes with one hardcoded destination: every payment received is transferred straight back out to the same address.
Historical Significance
A deposit address in its most reduced form. Where exchange deposit wallets keep a sweeper and a controller so funds can be moved later, this one settles immediately and keeps nothing, which removes the sweep step and the key that would authorise it. The trade is finality for flexibility: the alias is permanent, and a destination that stops accepting payments makes the contract useless rather than merely idle.
Key Facts
Description
There is no storage, no owner and no dispatcher. The only code path is the payable fallback, which calls transfer on a destination address baked into the bytecode, passing exactly the value received.
Because transfer forwards the 2300 gas stipend and reverts on failure, the contract cannot hold a balance and cannot be drained by anyone else: a payment either lands at the destination in the same transaction or the whole transaction is rolled back. The destination can never be changed, so the address is effectively an alias for it.
Source Verified
Bytecode Overview
Verified Source Available
This contract has verified source code.
View Verification ProofShow source code (Solidity)
// Submitted by EthereumHistory (ethereumhistory.com)
pragma solidity ^0.4.11;
contract Forwarder {
function () payable {
0xd889caA9847F64C77118AD5Ec60291525A3d3939.transfer(msg.value);
}
}