The earliest Coin stub on Ethereum mainnet - an empty sendCoin implementation from the ethereum.org tutorial, deployed August 2015.
Key Facts
Description
A stub deployment of the ethereum.org Coin tutorial contract, deployed at block 54,126 (August 2015). The contract has a public coinBalanceOf mapping and a sendCoin function with an empty body - sufficient defaults to 0 and is returned implicitly. No transfer logic was implemented; this was likely a developer testing the tutorial template before building the full contract. At 181 bytes, it is one of the smallest meaningful contracts deployed on Frontier Ethereum.
Source Verified
soljson v0.1.1+commit.6ff4cd6, optimizer OFF, compileJSON. Empty sendCoin body produces 181b runtime matching live eth_getCode exactly.
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 Coin {
mapping (address => uint) public coinBalanceOf;
function sendCoin(address receiver, uint amount) returns(uint sufficient) {}
}