Back to HomePart of The Linagee CollectionDeployer Linagee(0x3d0768...116c2d) Deployment Block 49,888 Deployment Date Aug 7, 2015, 08:50 PM Code Size 708.0 B Gas at Deploy 205,985
Contract 0xd958b51bc953...156e8aec4c9f
TokenDeployed August 7, 2015 (10 years ago)Block 49,888
Ethereum.org tutorial Coin contract deployed on Frontier day 1. Contains a bug: balance(address) ignores its argument and returns msg.sender balance.
Frontier EraVerified Source
Key Facts
Transactions by Year
20153
Deployment Transaction: 0x9c7f30164e2b0ab3...9274f7cdba13c1af
Source Verified
SolidityExact bytecode match(708 bytes)
Compiler: soljson
Exact bytecode match. Creation 708 bytes, runtime 607 bytes. Classic ethereum.org tutorial Coin contract with a bug: balance(address) ignores its argument.
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Detected Type: Token
Has ERC-20-like patterns
Frontier Era
The initial release of Ethereum. A bare-bones implementation for technical users.
Block span: 0 — 1,149,999
July 30, 2015 — March 14, 2016
Bytecode Overview
Opcodes708
Unique Opcodes92
Jump Instructions18
Storage Operations10
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;
event CoinTransfer(address sender, address receiver, uint amount);
function Coin(uint amount) {
coinBalanceOf[msg.sender] = 1000000;
}
function sendCoin(address receiver, uint amount) returns(uint sufficient) {
if (coinBalanceOf[msg.sender] < amount) return 0;
coinBalanceOf[msg.sender] -= amount;
coinBalanceOf[receiver] += amount;
CoinTransfer(msg.sender, receiver, amount);
return 1;
}
function balance(address addr) returns (uint) {
return coinBalanceOf[msg.sender];
}
}