Optimized version of the ETH Forwarder - same source compiled with soljson optimizer ON, producing 133 bytes vs 241.
Historical Significance
Demonstrates a Frontier-era developer experimenting with the Solidity optimizer on the live network, deploying the same contract with and without optimization within 30 blocks.
Key Facts
Description
Deployed at block 56,435 on August 8, 2015 by the same developer (0xA1eEc0a9) who deployed the unoptimized 241-byte version at block 56,406. Identical source code, compiled with the soljson v0.1.1 optimizer enabled. The optimizer reduced the bytecode from 241 bytes to 133 bytes - a 45% reduction - while maintaining identical functionality.
Source Verified
Creation bytecode (133 bytes) matches exactly. soljson v0.1.1+commit.6ff4cd6a, optimizer ON. Same source as the 241-byte unoptimized version at block 56,406.
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Frontier Era
The initial release of Ethereum. A bare-bones implementation for technical users.
Bytecode Overview
Verified Source Available
Source verified through compiler archaeology and exact bytecode matching.
View Verification ProofShow source code (Solidity)
contract Forwarder {
address target = 0xa1eEc0a9b7C50B8e79A0D9B8760bC5681fb199EC;
function send(uint256 amount) {
target.send(amount);
}
}