DualIndex

Utility

0xb549cd7084f8...defd85ac249e

FrontierExact Bytecode MatchEdit this contract

Deployed November 7, 2015 (10 years ago)Block 501,831

A two-key uint lookup table writable only by its admin, used by the ConsenSys dapp store prototype for licences.

Frontier EraVerified Source

Key Facts

Deployer

0x193cdd...97b032

Deployment Block

501,831

Deployment Date

Nov 7, 2015, 02:35 AM

Code Size

240.0 B

Deployment Transaction: 0x9dac78f100a25074...a0d5d603b5ebb400

Description

DualIndex maps a pair of integer keys to an integer value. Its admin can set entries and hand over control; anyone can look an entry up.

Source Verified

SolidityExact bytecode match(240 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/DualIndex.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

Opcodes240

Unique Opcodes59

Jump Instructions16

Storage Operations7

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 DualIndex {
  mapping(uint => mapping(uint => uint)) data;
  address public admin;

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

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

  function set(uint key1, uint key2, uint value) restricted {
    data[key1][key2] = value;
  }

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

  function lookup(uint key1, uint key2) returns(uint) {
    return data[key1][key2];
  }
}

External Links

Etherscan Verified Source (if any)

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