Guide · 72 pages · 156 min read · Published 2026-09-04
Guide 7 in the CFL Electronic Evidence Series, a legal and technical reference for practitioners in England and Wales who meet crypto assets in litigation, fraud investigations, insolvency, divorce and regulatory work. It explains what a blockchain record actually proves and what it does not, how transactions are traced across public ledgers, mixers, bridges and exchanges, and how an address or wallet is attributed to a real person through exchange records, device artefacts, seed phrase recovery and open source material. Later chapters set out preservation and seizure of wallets and keys, working with exchanges and custodians in and outside the jurisdiction, freezing and proprietary injunctions, Norwich Pharmacal and Bankers Trust relief, and the disclosure obligations that follow under CPR Part 31 and PD 57AD. The guide covers valuation and tracing of mixed funds, stablecoins, DeFi protocols and NFTs, the evidential standards a court expects of blockchain analytics output, and how to write and defend an expert report on crypto evidence under CPR Part 35. Chain of custody, hashing, documented provenance and ISO 17025 aligned laboratory practice run throughout, alongside worked examples, checklists and drafting points that a solicitor, in-house lawyer or investigator can apply directly to a live matter.
Read this guide on your phone, browse guides by topic or go back to the full PDF library.