Crypto Fraud and On-Chain Tracing
Criminal defense and private prosecution in cryptocurrency scams through forensic blockchain expert evidence and on-chain tracing of flows.
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Cryptocurrency fraud is today one of the economic offenses of highest volume and growth. The structure is common: the victim makes an initial transfer to a wallet controlled by the scammer, the funds are fragmented through multiple intermediate wallets, traverse cross-chain bridges (Ethereum → Tron, Bitcoin → Lightning) and end up converted to fiat at some centralized exchange (CEX). Criminal defense of the accused and prosecution of the victim are fought on the same terrain: on-chain tracing.
On-Chain Tracing Methodology
Professional tracing employs forensic tools (Chainalysis Reactor, Elliptic Lens, TRM Labs) that cluster addresses by heuristics (same input, same change, etc.) and enrich with OSINT databases identifying wallets linked to exchanges, mixers or specific services. The result is a transaction graph that visually reconstructs the flow. Its admissibility at trial depends on the expert's reliability and methodology documentation.
Identification of the Cash-Out Point
Recovery success almost always depends on identifying the centralized exchange where funds are converted to fiat currency. Once identified, the Spanish judicial order addressed to the exchange (via international cooperation if outside the EU) may freeze balances and, eventually, return them to the victim as civil liability ex delicto. Time is critical: after 30-90 days funds are usually withdrawn.
Pig Butchering and Fake Brokers
The most widespread scheme is "pig butchering": the scammer builds a relationship of trust —romantic or investment-mentoring— over weeks, induces small initial investments that "generate" fictitious profits shown on a fake dashboard, and escalates until draining the victim's wealth when they try to withdraw funds. Alongside it operate fake brokers (platforms mimicking regulated entities) and phishing drainers that empty wallets when a malicious transaction is signed. Identifying the pattern is key to establishing sufficient deception and intent.
Timing and Probability of Recovery
Recovery depends on reaction time and the cash-out point. The first 24-72 hours are critical: if funds remain in a traceable wallet or reach a cooperating centralized exchange, their freezing can be requested. After that window, fragmentation through mixers, bridges and privacy coins drastically reduces the options. No recovery is guaranteed: immediate diligence improves the probability, but the outcome depends on factors beyond the lawyer's control.
Penalty Chart
| Type / Scenario | Criminal Penalty |
|---|---|
| Basic fraud (Art. 248 CP) | Imprisonment 6 months to 3 years. Fine 6-12 months. |
| Aggravated fraud (Art. 250 CP) | Imprisonment 1-6 years + fine 6-12 months. Applicable for special gravity, multiplicity of victims or amount exceeding €50,000. |
| Crypto criminal organization (Art. 570 bis CP) | Imprisonment 4-8 years for leaders; 2-5 years for members. Applicable when structure, hierarchy and permanence exist. |
* Penalties shown are indicative. The actual penalty depends on case circumstances, applicable mitigating and aggravating factors.
Our Defense Strategy
Immediate Wallet Snapshot
Forensic capture of wallets, transactions and intermediate addresses within the first 24-48 hours after the act.
Criminal + Precautionary Civil Action
Criminal complaint with request for real precautionary measures over balances identified at exchanges.
Defense Through Civil Atypicality
On the accused's side: prove the operation was mere market contingency or non-criminal contractual dispute.
Crypto Fraud Defence: Scams, On-Chain Tracing, MiCA & Asset Seizure
Crypto-related criminal cases combine classical offences — fraud (Arts. 248-250 CP), money laundering (Art. 301 CP), tax fraud (Art. 305 CP) and criminal organisation (Art. 570 bis CP) — with the technical reality of blockchain: pseudonymous wallets, mixers, cross-chain bridges, stablecoins and DeFi protocols. There is no autonomous "crypto offence": prosecutors must fit the facts into an existing criminal type and prove the on-chain flow with admissible expert evidence. Defence therefore demands both criminal-law expertise and independent blockchain forensics.
Penalty Table: Crypto-Asset Offences
| Offence | Article | Description | Penalty |
|---|---|---|---|
| Basic crypto fraud | Arts. 248-249 | Deception inducing the transfer of crypto-assets (fake broker, fake platform) | 6 months – 3 years |
| Aggravated fraud | Art. 250 | Special gravity, multiplicity of victims or high amount | 1 – 6 years |
| Money laundering with crypto | Art. 301 | Concealing illicit origin via mixers, bridges or exchanges | 6 months – 6 years + fine |
| Crypto tax fraud | Art. 305 | Evaded quota over €120,000 per fiscal year (Form 721) | 1 – 5 years + fine |
| Computer damage / DeFi exploit | Art. 264 | Exploit damaging systems or data (smart-contract attack) | 6 months – 3 years |
| Criminal organisation | Art. 570 bis | Structured group running crypto fraud at scale | 2 – 8 years |
Key Defence Strategies
Independent Blockchain Counter-Expert
Chainalysis, Elliptic or TRM tracing graphs are interpretations, not certainties. An accredited own expert can challenge address clustering heuristics, mixer assumptions and the attribution of a wallet to a specific person.
Market Contingency vs. Deception
A loss is not a crime. Many crypto disputes are investment risk, protocol failure or contractual breach — civilly reproachable but criminally atypical. The defence isolates genuine deception (Art. 248) from ordinary market loss.
Good Faith & KYC Diligence
Documented KYC, lawful source of funds, Form 721 reporting and declared capital gains rebut the knowledge element of laundering and fraud. Willful blindness must be proven, not presumed.
Criminal-Tax Bifurcation
Voluntary tax regularisation can activate the Art. 305.4 CP exemption, while the administrative track (CNMV/SEPBLAC) is handled separately from the criminal process, where defences may diverge.
Key Case Law
The Supreme Court accepts that the appearance of a legitimate trading platform or broker can constitute the 'sufficient deception' of Art. 248: the victim's error is measured against the credibility of the staged operation, not against the abstract diligence of an expert investor.
On-chain tracing is valid evidence but subject to expert contradiction. Traceability of a flow to a wallet does not, by itself, prove the intent (dolo) of its holder; the prosecution must still establish knowledge and control.
Using undeclared crypto gains to make further investments may integrate self-laundering (Art. 301.1) in concurrence with tax fraud (Art. 305), creating double criminal exposure that the defence must dismantle element by element.
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