Back to HomeDeployer 0xc70ba2...af62e9 Deployment Block 55,627 Deployment Date Aug 8, 2015, 10:46 PM Code Size 186.0 B Gas at Deploy 66,999
Deployed August 8, 2015 (10 years ago)Block 55,627
Timestamp-parity coinflip with balance guard and donate().
Frontier EraVerified Source
Key Facts
Transactions by Year
20157
20261
Deployment Transaction: 0xdbfcd2006dd6f0b7...b484caa6cc124cd4
Description
Timestamp-parity coinflip with balance guard and donate(). Functions include flip() (auto-getter), donate(), fallback. Verified with soljson-v0.1.1+commit.6ff4cd6 and optimizer ON.
Source Verified
SolidityExact bytecode match(186 bytes)
Compiler: soljson
Backfilled from awesome-ethereum-proofs PR #35.
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Detected Type: Unknown
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
Opcodes186
Unique Opcodes55
Jump Instructions13
Storage Operations2
Verified Source Available
Source verified through compiler archaeology and exact bytecode matching.
View Verification ProofShow source code (Solidity)
// Compiler: solc 0.1.0 --optimize (exact match with solc 0.0.9.27 through 0.1.1, optimized)
// Contract: 0xb87824547db80f1fb37d0225b99f1a602f8642ad
// Deployed: 2015-08-08 (block 55627)
// Match: 100% exact bytecode match (186/186 bytes)
contract CoinFlipper {
uint256 public flip;
function donate() {
}
function() {
var v = msg.value;
var b = address(this).balance;
if (v > 2 * b) {
return;
}
flip = block.timestamp;
if (flip % 2 == 0) {
} else {
msg.sender.send(2 * v);
}
}
}