Sweeper

Unclassified

0xeb15f63aaeed...1240f76cb3e1

ByzantiumExact Bytecode MatchEdit this contract

Deployed January 23, 2018 (8 years ago)Block 4,958,359

Minimal ETH sweeper, first of 1,900 identical deployments in a 2-day burst in January 2018. All sweep to a single hardcoded destination. Source verified by EthereumHistory.

Byzantium EraVerified Source

Key Facts

Deployer

0x4dcee5...1d07ec

Deployment Block

4,958,359

Deployment Date

Jan 23, 2018, 01:34 PM

Code Size

136.0 B

Gas at Deploy

90,857

Deployment Transaction: 0x310977170c4ea6ed...dfb3c80da8f4336f

Description

This contract is the first of 1,900 identical ETH sweepers deployed in a tight 2-day window (January 23-25, 2018) by a single deployer (0x4dcee5d5cbcd37cacb262290d40bec3bf61d07ec). Each contract has a single function - a payable fallback that immediately transfers the entire ETH balance to the same hardcoded destination address 0xd293a88c7ef49dad48b58bdf87a426ffaab338d4. There is no owner check and no other functions; the sweep destination is baked into the bytecode and cannot be changed.

The source was reconstructed and matches the on-chain runtime code byte-for-byte (102 code bytes) when compiled with solc 0.4.15 optimizer ON runs=200. Only the trailing 34-byte Swarm/CBOR metadata hash differs because the exact whitespace and comment formatting of the original source is not preserved; that formatting-only delta is Etherscan-tolerated on a source submission.

Proof: cartoonitunes/awesome-ethereum-proofs, folder sweeper-fixed-0xeb15f63a.

Source Verified

SolidityExact bytecode match(136 bytes)

Compiler: 0.4.15+

View verification proof

Exact match on 102 code bytes with solc 0.4.15 optimizer ON runs=200. Only the trailing 34-byte Swarm metadata hash differs (source formatting delta). Cluster: 1,900 identical-runtime deployments 2018-01-23 through 2018-01-25 from a single deployer.

Heuristic Analysis

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

Detected Type: Unclassified

Byzantium Era

First Metropolis hard fork. Added zk-SNARK precompiles, REVERT opcode, and staticcall.

Block span: 4,370,000 — 7,279,999

October 16, 2017 — February 28, 2019

Bytecode Overview

Opcodes136

Unique Opcodes77

Jump Instructions4

Storage Operations0

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Solidity)

// Submitted by EthereumHistory (ethereumhistory.com)
pragma solidity ^0.4.0;

contract Sweeper {
    function () payable {
        address(0xd293a88c7ef49dad48b58bdf87a426ffaab338d4).transfer(this.balance);
    }
}

External Links

Etherscan Verified Source (if any)

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