David Lüdtke

Cross-chain operations on Arbitrum are forensically challenging: sequencer logic, delayed inbox, and router and gateway architecture require a clear methodological separation of verifiable on-chain facts and interpretation. We present a reproducible investigation framework for the professional analysis of Arbitrum swaps—as a basis for court-admissible reports.

How artificial intelligence is changing crypto forensics: wallet clustering, graph analysis, cross-chain tracing and behavioral analysis, and where the limits lie.

This case report documents a real-life case involving forensic analysis, subsequent official seizure of approximately €35,000 on a cryptocurrency exchange, and a thwarted recovery scam attempt involving €5,800. It includes methodological guidance and lessons learned for lawyers, compliance officers, and defense attorneys handling similar cases.

This article provides a systematic classification of crypto mixers for legal and compliance practice: operating principle, custodial and non-custodial mixers, zero-knowledge proofs for Tornado Cash, CoinJoin procedures, privacy coins, DeFi-based layering, recent legal developments regarding sanctions and operator prosecution, forensic investigation limits, and the role of centralized exchanges.

This article provides a methodological overview of crypto forensics for legal and consulting practice: UTXO and account model, blockchain tracing, wallet clustering, common input ownership heuristic, taint analysis according to FIFO, pro-rata and poison model, attribution via KYC and OSINT, as well as tool landscape and limits of forensic analysis – with a clear reference to client work.

This article documents a real-life crypto love scam with a total loss of €184,000 and describes the forensic methodology used: transaction reconstruction, peel chain detection, cross-chain tracking between TRON, Ethereum and BNB Chain, AI-supported wallet clustering, and the International Preservation Request, which led to the recovery of €112,000 – with lessons learned for legal representation.