The hello-world of Solidity: multiply(x) returns x*7. The ethereum.org tutorial contract. 120 copies deployed Sep 2015 through Feb 2016.
Key Facts
Description
One of the simplest Solidity contracts ever deployed: a single function that multiplies an input by 7. This is the first example from the ethereum.org Solidity documentation circa 2015.
The deployer (0x8D0b) ran 120 copies between Sep 22, 2015 and Feb 2016 — likely a tutorial platform or automated testing system walking through the official Solidity examples.
Compiler: soljson v0.1.3 through v0.2.1 all produce identical output with optimizer ON. 42-byte runtime.
Source Verified
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 Multiply7 {
function multiply(uint input) returns (uint) {
return input * 7;
}
}