Cryptocurrencies have revolutionized the financial and technological landscape. But alongside their legitimate uses, they have also become a frequent channel for illicit activities. In Spain and internationally, authorities have developed advanced methods to trace, seize and prosecute cases related to crypto assets.
This article explains how these crimes are investigated, what tools investigators use, how international cooperation works and what options both defendants and victims have.
Can cryptocurrencies be traced?
The answer is yes. Despite the popular belief that cryptocurrencies are anonymous, most are pseudonymous: they record all transactions on a public blockchain. This means that, with the right tools, virtual money can be traced to identify its owners or controllers.
Myths and realities about anonymity on the blockchain
The most common myth is that «in crypto you can’t know who is behind a transaction». The reality is that Bitcoin, Ethereum and most cryptocurrencies leave a permanent and public record of each transaction. The difficult part is not seeing the transactions, but linking addresses to real people, something that forensic investigation and international cooperation increasingly facilitate.
How traceability of Bitcoin, Ethereum, USDC and other cryptos works
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Tools used by authorities to investigate crypto
Cryptocurrency investigations require advanced software and techniques that combine blockchain analysis with classic criminal investigation methods.
Chainalysis, Elliptic and CipherTrace: how they trace funds
These private platforms analyze blockchain transactions and create clusters of related addresses, identify money laundering patterns and link transactions with known entities (exchanges, dark web markets, sanctioned addresses).
Use of heuristics and clustering to identify addresses
Heuristics analyze repetitive behaviors to group addresses controlled by the same person or group. Clustering, in turn, allows linking large volumes of dispersed addresses and understanding the structure of a criminal organization.
Forensic analysis of devices to discover wallets and private keys
In many investigations, the key is not in the blockchain, but in the suspect’s computer, mobile or hardware wallet. Forensic analysis extracts addresses, private keys and exchange access credentials, even if they were deleted or encrypted.
What happens if I’m accused after a crypto investigation
When a person is identified in a crypto investigation, the criminal procedure in Spain follows clear phases.
Phases of criminal procedure in Spain for cryptocurrency crimes
- Opening of preliminary proceedings.
- Statement of the investigated person.
- Practice of evidence and expert reports.
- Trial and judgment.
Possible precautionary measures: wallet blocking, hardware wallet seizure, pretrial detention
Judges can order the preventive blocking of cryptocurrencies, device seizure and, in serious cases, provisional imprisonment to secure the investigation.
Defense strategies to minimize damage and avoid convictions
A specialized attorney can challenge the validity of digital evidence, contest expert reports, demonstrate the lawful origin of funds and negotiate agreements that reduce the sentence.
How a cryptocurrency specialist attorney can help you in a crypto investigation
Having technical defense from the first moment makes the difference.
Request for dismissal due to lack of evidence
Abogado penalista en Madrid (Graduado en Derecho y ADE con Máster de Acceso a la Abogacía), experto en procedimientos complejos y técnicos en Derecho Penal. Cuenta con títulos como el Curso de DerechoPenal Avanzado impartido por magistrados del Tribunal Supremo en el Iltre. Colegio de Abogacía de Madrid.