Oraclize

Unclassified

0xe556a12432e3...3d9e9aa23106

FrontierContract #2,555Exact Bytecode MatchEdit this contract

Deployed October 24, 2015 (11 years ago)Block 431,936

Oraclize connector, 24 Oct 2015: accepts queries only from its proxy 0xb6ba14a1 and logs them with the proxy's query id.

Frontier EraVerified Source

Historical Significance

Part of the earliest onchain history of Oraclize, the first widely used oracle service on Ethereum. Source reconstructed from bytecode; exact runtime and creation match with solc v0.1.6, verified on Etherscan and Sourcify.

Context

Deployed by the Oraclize operator account (0x0047a8033cc6d6ca2ed5044674fd421f44884de8) between 22 and 24 October 2015, while Thomas Bertani was building the Oraclize service onchain, weeks before Oraclize published its API in December 2015. Over those three days the connector went from a query() that only emitted a log event, through forwarding proxies and address resolvers, to a connector that charged per query and let callers withdraw their balance.

Key Facts

Deployer

0x0047a8...884de8

Deployment Block

431,936

Deployment Date

Oct 24, 2015, 10:17 AM

Code Size

1.6 KB

Gas at Deploy

441,507

Deployment Transaction: 0x1eb4942e43244cb0...8d13c73b506c3927

Description

Oraclize connector, 24 Oct 2015: accepts queries only from its proxy 0xb6ba14a1 and logs them with the proxy's query id.

Source Verified

SolidityExact bytecode match(1,608 bytes)

Compiler: v0.1.6+

View verification proof

Heuristic Analysis

The following characteristics were detected through bytecode analysis and may not be accurate.

Detected Type: Unclassified

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

Opcodes1,608

Unique Opcodes131

Jump Instructions40

Storage Operations3

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 OraclizeProxy {
    function lasthash() returns (bytes32);
}

contract Oraclize {
    event Log1(bytes32 myid, uint timestamp, string datasource, string arg);
    event Log2(bytes32 myid, uint timestamp, string datasource, string arg1, string arg2);

    function query(uint timestamp, string datasource, string arg) returns (bytes32 myid) {
        if (msg.sender == address(0xb6ba14a1a96a567d3a97a85af366a4e2d47cdd53)) {
            OraclizeProxy proxy = OraclizeProxy(0xb6ba14a1a96a567d3a97a85af366a4e2d47cdd53);
            myid = proxy.lasthash();
            Log1(myid, timestamp, datasource, arg);
            return myid;
        } else throw;
    }

    function query(uint timestamp, string datasource, string arg1, string arg2) returns (bytes32 myid) {
        if (msg.sender == address(0xb6ba14a1a96a567d3a97a85af366a4e2d47cdd53)) {
            OraclizeProxy proxy = OraclizeProxy(0xb6ba14a1a96a567d3a97a85af366a4e2d47cdd53);
            myid = proxy.lasthash();
            Log2(myid, timestamp, datasource, arg1, arg2);
            return myid;
        } else throw;
    }
}