Project Details

MIXER: Budování komunity k problematice kryptoměnových mixérů

Project Period: 1. 6. 2023 – 30. 6. 2025

Project Type: grant

Code: VJ03030037

Agency: Ministerstvo vnitra ČR

Program: Vyhlášení druhé veřejné soutěže podprogramu 3, PROGRAMU STRATEGICKÁ PODPORA ROZVOJE BEZPEČNOSTNÍHO VÝZKUMU ČR 2019-2025 (IMPAKT 1), PODPROGRAMU 3 ROZVOJ INICIATIVY V BEZPEČNOSTNÍM VÝZKUMU

English title

MIXER: Building community interested in cryptocurrency mixers

Type

grant

Keywords

Bitcoin, cryptocurrency, mixers

Abstract

We would like to explore another area of concern, which is cryptocurrency mixers and cryptocurrency machines. That is, services where users deposit cryptocurrency funds encumbered by some problematic transaction history (e.g., ransomware, fraudulent behavior, proceeds from trading on dark marketplaces) and receive similar value in return, but with a different transaction chain. Mixing, or its simpler variant coin-joining, complicates the connectivity of cryptocurrency funds to illicit activity and generally complicates the process of tracing them. A possible solution to deobfuscate mixers is to correlate input and output transactions in clusters. The correlation would attempt to match some output transactions of equal value (minus a fee to the mixer operator) to the corresponding input transactions. For the heuristic to be functional, it is necessary to identify the deposit and withdrawal clusters of each mixer and the links between them.

Team members

Veselý Vladimír, Ing., Ph.D. (DIFS) – research leader
Dolejška Daniel, Ing. (DIFS)
Grégr Matěj, Ing., Ph.D. (DIFS)
Zavřel Jan, Ing. (DIFS)