Oraclize

Unclassified

0xc1ca2834db3d...18be7465936a

FrontierContract #2,459Exact Bytecode MatchEdit this contract

Deployed October 23, 2015 (11 years ago)Block 426,988

Second Oraclize proxy, 23 Oct 2015: forwards calls and returns a query id sha3(now + counter).

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

426,988

Deployment Date

Oct 23, 2015, 11:18 AM

Code Size

739.0 B

Gas at Deploy

237,295

Deployment Transaction: 0x62be6d10b98aa5e7...43138312498cef06

Description

Second Oraclize proxy, 23 Oct 2015: forwards calls and returns a query id sha3(now + counter).

Source Verified

SolidityExact bytecode match(739 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

Opcodes739

Unique Opcodes103

Jump Instructions17

Storage Operations16

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 Oraclize {

    function Oraclize() {
        addr = 0xaf72e3ce56131a9c1a6831b2f0789eb07c962292;
    }

    function changeAddr(address newaddr) {
        if (msg.sender != owner) throw;
        addr = newaddr;
    }

    function() returns (bytes32 myid) {
        myid = sha3(now + counter);
        counter++;
        addr.call(msg.data);
        return myid;
    }
    uint counter = 0;
    address public cb_address = 0x26588a9301b0428d95e6fc3a5024fce8bec12d51;
    address addr;
    address owner = 0x0047a8033cc6d6ca2ed5044674fd421f44884de8;
}