SimpleIndex

Utility

0x89dd7114860d...95d83e2a9390

FrontierExact Bytecode MatchEdit this contract

Deployed November 7, 2015 (10 years ago)Block 501,835

A uint-to-uint lookup table writable only by its admin, used by the ConsenSys dapp store prototype to find records by key.

Frontier EraVerified Source

Key Facts

Deployer

0x193cdd...97b032

Deployment Block

501,835

Deployment Date

Nov 7, 2015, 02:37 AM

Code Size

216.0 B

Deployment Transaction: 0x1c23cb9d6981a905...ea7f70a04cd967f3

Description

SimpleIndex maps one integer key to one integer value. Its admin can set entries and hand over control; anyone can look an entry up.

Source Verified

SolidityExact bytecode match(216 bytes)

Compiler: v0.1.6+

View verification proof

Exact runtime and creation bytecode match with soljson v0.1.6+commit.d41f8b7c, optimizer on. Source: github.com/ConsenSysMesh/dapp-store-contracts @ 0850f857 (contracts/SimpleIndex.sol, 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.

Detected Type: Utility

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

Opcodes216

Unique Opcodes54

Jump Instructions15

Storage Operations9

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

Verified on Etherscan

View Verification Proof

Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
contract SimpleIndex {
  mapping(uint => uint) data;
  address public admin;

  modifier restricted { if (msg.sender == admin) _ }

  function SimpleIndex() {
    admin = msg.sender;
  }

  function set(uint key, uint value) restricted {
    data[key] = value;
  }

  function transfer_ownership(address _admin) restricted {
    admin = _admin;
  }

  function lookup(uint key) returns(uint) {
    return data[key];
  }
}

External Links

Etherscan Verified Source (if any)

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