An open key-value store from an early decentralised marketplace dapp: any account can save a value under its own address, with a timestamp.
Key Facts
Description
OpenStore keeps one value and one timestamp per sender. A contract can also store a value on behalf of the account that called it.
Source Verified
Exact runtime and creation bytecode match with soljson v0.1.6+commit.d41f8b7c, optimizer on. Source: github.com/gitter-badger/dapp, revision blob f815097b6a (author original, verbatim). Verified on Etherscan. Not submitted to Sourcify: its oldest supported compiler is v0.1.7.
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)
// Submitted by EthereumHistory (ethereumhistory.com)
contract OpenStore{
mapping (address => mapping(bytes32 => Datum)) data;
struct Datum {
bytes value;
uint timestamp;
}
function set(bytes32 key, bytes value){
data[tx.origin][key].value = value;
data[tx.origin][key].timestamp = now;
}
function setFromContract(bytes32 key, bytes value){
data[msg.sender][key].value = value;
data[msg.sender][key].timestamp = now;
}
function getValue(address addr, bytes32 key) constant returns(bytes){
return data[addr][key].value;
}
function getTimestamp(address addr, bytes32 key) constant returns(uint){
return data[addr][key].timestamp;
}
}External Links
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