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Alonso Sala

CRIMINAL LAWYERS

Cryptocurrency Money Laundering Lawyers — Specialized Criminal Defense

Criminal defense in money laundering through Bitcoin, Ethereum, mixers, decentralized exchanges and DeFi.

Money laundering with cryptocurrencies (Art. 301 CP) uses digital assets such as Bitcoin, Ethereum and stablecoins to conceal the unlawful origin of funds. The pseudo-anonymous nature of blockchains, the existence of mixers (transaction blenders) and decentralized exchanges (DEX) have turned cryptocurrencies into an attractive instrument for laundering. Penalties range from 6 months to 6 years of imprisonment, with aggravating factors for the use of a criminal organization.

Crypto Obfuscation Techniques

The most commonly used techniques include: mixers and tumblers (services that blend cryptocurrencies from multiple users to hinder tracing, such as Tornado Cash or Wasabi Wallet), chain hopping (converting Bitcoin into Monero or Zcash, privacy coins, and back to Bitcoin), P2P exchanges without KYC verification, the use of privacy coins (Monero, Zcash, Dash with CoinJoin), NFT purchases at inflated prices between one's own wallets, and DeFi operations (liquidity protocols, yield farming with unlawful funds).

Blockchain Forensic Investigation

Despite obfuscation techniques, the blockchain is a public ledger. Law enforcement agencies use specialized tools (Chainalysis, Elliptic, CipherTrace) that allow them to: trace the flow of funds between wallets, identify clusters of addresses belonging to the same user, detect the use of mixers, and link addresses to real identities through regulated exchanges with KYC verification. SEPBLAC and the Civil Guard (UCO) have developed specific crypto analysis capabilities.

Exchanges as Obliged Parties

Since the transposition of the 5th AML Directive (EU), exchanges operating in Spain are obliged parties under Law 10/2010: they must verify their customers' identity (KYC), monitor suspicious transactions, report to SEPBLAC, and apply enhanced due diligence measures in high-risk operations. Exchanges that fail to comply may be sanctioned with fines of up to €10 million.

Self-Laundering and Concurrence with the Predicate Offense

A figure of particular risk is self-laundering (Art. 301.1 CP): a person who commits an offense (fraud, tax fraud, trafficking) and then converts or moves the proceeds in crypto to conceal them commits an autonomous laundering offense, in concurrence with the predicate offense. The defense must delimit when the mere enjoyment or holding of the proceeds of crime does not yet integrate a typical act of laundering, avoiding double incrimination for the same facts.

Defense: Lawful Origin and the Subjective Element

Money laundering requires knowledge of the unlawful origin (intent or willful blindness); the mere receipt of crypto of dubious origin is not enough. The defense is built on two axes: (1) documenting the lawful traceability of the funds with one's own on-chain expert report, and (2) dismantling the subjective element, proving diligence in KYC and the absence of objective indicators that would have compelled suspicion. The use of privacy tools, by itself, does not amount to an intention to launder.

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Penalty Chart

Type / ScenarioCriminal Penalty
Basic money laundering (Art. 301 CP)Imprisonment 6 months to 6 years and a fine of up to three times the amount.
Aggravated by organizationPenalty in its upper half when acting within an organization dedicated to laundering.
ConfiscationCrypto assets may be confiscated: the judicial authority may order the forced transfer from the wallets.

* Penalties shown are indicative. The actual penalty depends on case circumstances, applicable mitigating and aggravating factors.

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Our Defense Strategy

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Lawful Origin of Funds

Establish full traceability from the legitimate origin of the funds to the crypto transactions in question.

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Legitimate Use of Mixers

Argue that the use of mixers responded to legitimate financial privacy motives, not an intention to launder.

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Mistake as to Unlawfulness

Establish ignorance of the criminal origin of the funds received in cryptocurrencies.

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

OffenceArticleDescriptionPenalty
Basic crypto fraudArts. 248-249Deception inducing the transfer of crypto-assets (fake broker, fake platform)6 months – 3 years
Aggravated fraudArt. 250Special gravity, multiplicity of victims or high amount1 – 6 years
Money laundering with cryptoArt. 301Concealing illicit origin via mixers, bridges or exchanges6 months – 6 years + fine
Crypto tax fraudArt. 305Evaded quota over €120,000 per fiscal year (Form 721)1 – 5 years + fine
Computer damage / DeFi exploitArt. 264Exploit damaging systems or data (smart-contract attack)6 months – 3 years
Criminal organisationArt. 570 bisStructured group running crypto fraud at scale2 – 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

TS doctrineSufficient deception in digital environments

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.

TS doctrineBlockchain tracing as expert evidence

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.

TS doctrineSelf-laundering and tax fraud in concurrence

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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Why Choose Us?

Need a criminal defense lawyer for this type of offense? Here's how we work:

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On-Chain TraceabilityProvide independent blockchain analysis establishing the lawful origin of the funds.
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Technical ExpertiseQuestion the reliability of the blockchain analysis tools used by the prosecution.
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Privacy vs LaunderingDistinguish between the legitimate exercise of the right to financial privacy and the intention to launder.
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+15 Years of ExperienceTeam dedicated exclusively to criminal law before Spanish courts and tribunals.
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Direct AttentionYour case is handled directly by a senior lawyer of the firm.
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gavelElements of the Crime

  • check_circleConduct:Acquiring, converting, transferring or concealing crypto assets knowing they derive from criminal activity.
  • check_circleObfuscation:Use of techniques such as mixers, chain hopping or non-KYC exchanges to hide the origin of funds.
  • check_circleIntent:Knowledge of the unlawful origin of the funds converted into cryptocurrencies.

gavelPenal Consequences

Basic money laundering (Art. 301 CP)

Imprisonment 6 months to 6 years and a fine of up to three times the amount.

Aggravated by organization

Penalty in its upper half when acting within an organization dedicated to laundering.

Confiscation

Crypto assets may be confiscated: the judicial authority may order the forced transfer from the wallets.

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FAQs

Is using Bitcoin to conceal money laundering?expand_more
Yes, if the funds derive from criminal activity and cryptocurrencies are used to conceal their origin or integrate them into the legal economy.
Can Bitcoin be traced?expand_more
Yes. Bitcoin is pseudo-anonymous, not anonymous. Blockchain analysis tools can trace transactions and link them to identities.
Is it illegal to use mixers?expand_more
Using mixers is not a crime per se, but using them to conceal the origin of unlawful funds does constitute money laundering.
What are privacy coins?expand_more
Monero, Zcash and Dash offer greater privacy than Bitcoin. Their use is legal, but they can be a laundering tool if used with unlawful funds.
Can my cryptocurrencies be confiscated?expand_more
Yes. The judge may order the confiscation and forced transfer of crypto assets to a wallet controlled by the judicial authority.
What is the penalty?expand_more
Imprisonment 6 months to 6 years + a fine of up to three times the laundered value. Aggravated if there is an organization: upper half.
Is the exchange liable?expand_more
If it failed to comply with its prevention obligations (KYC/AML), it may be administratively sanctioned with up to €10 million.
Is buying NFTs with unlawful money a form of laundering?expand_more
Yes. Buying NFTs at inflated prices is an identified technique of laundering through digital art.
What is chain hopping?expand_more
Converting cryptocurrencies from one blockchain to another (e.g. Bitcoin → Monero → Bitcoin) to hinder tracing.
Does crypto money laundering have a statute of limitations?expand_more
Yes. The general period is 10 years. If there is a criminal organization: 15 years.
Are stablecoins treated the same under criminal law?expand_more
Yes. USDT, USDC and other stablecoins are crypto assets for criminal purposes and subject to the same reporting obligations. Their price stability makes them attractive for laundering.
Can I be investigated for receiving crypto of unknown origin?expand_more
Yes. If you receive cryptocurrencies from a wallet linked to criminal activity, you may be investigated for reckless laundering if you did not carry out the minimum checks on the origin.

Do you need specialised legal assistance?

The judicial system is complex. We have the criminal-law specialisation and technical resources required to take on the defence.

Contact Alonso Sala
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