Miami Cryptocurrency Fraud Attorney
The Law Office of Nayib Hassan, P.A. defends business owners, investors, traders, platform operators, and individuals in Miami and Miami-Dade County who are under federal investigation or have been indicted over digital asset activity. A Miami cryptocurrency fraud attorney is often called in because of something as ordinary as a bank freezing an account after a large transfer from an exchange, or an agent leaving a card at the door asking for a “quick conversation” about a wallet.
Crypto cases tend to look different from the paper-based fraud cases prosecutors have brought for decades. The evidence is a blockchain ledger, exchange records, chat logs, and device extractions. The charges are usually the familiar ones: wire fraud, securities fraud, money laundering, and conspiracy. Prosecutors in the Southern District of Florida often stack them, and the theory frequently rests on a claim that someone knew a project was a sham or that funds came from crime. Whether that knowledge existed is almost always the real fight.
Crypto defendants are also often people who never thought of themselves as exposed: early adopters who traded peer to peer, founders of small token projects, promoters who repeated what a developer told them, and people who received funds from a counterparty they did not fully know. The firm represents clients in these situations from the first contact with agents through trial, sentencing, and appeal.
How Federal Prosecutors Build a Crypto Fraud Case
A blockchain is public, which sounds like it should make cases simple. In practice it gives investigators a roadmap they can follow for years. Agents from the FBI, IRS Criminal Investigation, Homeland Security Investigations, and the Secret Service can trace transfers between wallets, then use subpoenas to the exchanges where those wallets touched the regulated banking system. By the time anyone is contacted, the government may already have account-opening documents, identification photos, IP logs, and a complete transaction history.
That tracing is powerful, but it proves movement, not intent. A wallet address does not tell a jury who controlled it, what the owner understood about the source of the funds, or whether a promise made to investors was a lie or an optimistic prediction that failed. Those gaps are where a Miami crypto fraud defense lawyer does the most work: questioning attribution, challenging the loss figure, and separating a failed venture from a criminal scheme.
Federal sentences are driven heavily by the alleged loss amount under the United States Sentencing Guidelines. In crypto cases, the loss number can be contested on valuation alone, since digital assets swing wildly in price. What a token was worth at the time of the transfer, at the time of the charge, or at the time of sentencing can change a guideline range dramatically, and the government’s choice is not automatically the right one.
Why Choose the Law Office of Nayib Hassan, P.A. for Digital Asset Fraud Defense
The Law Office of Nayib Hassan, P.A. is a federal criminal defense firm serving Miami, Miami-Dade County, and the rest of South Florida, including Broward, Palm Beach, and Monroe Counties, and it takes cases in federal courts across the country. Nayib Hassan, the firm’s attorney and founder, spent time as a Broward County Assistant State Attorney, handled thousands of cases, and tried hundreds to verdict, with more than 20 years inside the criminal justice system overall. That background matters in a case built on charging decisions, because he knows how prosecutors weigh evidence and where they are uncomfortable going to trial.
Mr. Hassan is admitted to the federal courts in the Southern, Middle, and Northern Districts of Florida, the federal court for the District of Columbia, and the United States Court of Appeals for the Eleventh Circuit. He has defended clients in federal courts in Florida, the Southern District of New York, Texas, Ohio, Indiana, Kentucky, South Carolina, and California, and his cases have drawn coverage from The Wall Street Journal, The New York Times, CNN, and the Miami Herald. He is recognized among the Top 100 Trial Lawyers by The National Trial Lawyers, holds a 10.0 Avvo rating, serves on the Miami board of the Florida Association of Criminal Defense Lawyers, and teaches as an adjunct professor at St. Thomas University. He has also presented continuing legal education programs on federal court practice to other defense lawyers.
In multi-defendant federal cases, he has obtained dismissals for clients and, in another case, one of the lowest sentences among all codefendants. The firm intentionally limits its caseload so the attorney handling your case is the attorney you speak with, and it is available 24 hours a day, 7 days a week. Mr. Hassan is fluent in Spanish and speaks directly with clients and families, which matters in a market where many crypto transactions involve counterparties and relatives in Colombia, Mexico, the Bahamas, Ecuador, and Cuba, all places the firm has handled matters connected to.
Charges Commonly Filed in Cryptocurrency Fraud Cases
- Wire Fraud: The most common charge in digital asset cases, because nearly every online solicitation, transfer, or investor communication crosses interstate wires. The government must show a scheme to defraud and intent to deceive, which makes your statements, marketing, and internal messages central evidence.
- Securities Fraud: Token sales, staking programs, and yield products can be treated as investment contracts when investors expect profits from the efforts of others. Disputes over whether an asset was a security at all are a frequent battleground.
- Money Laundering: Prosecutors add this charge when funds allegedly derived from crime moved through wallets, mixers, exchanges, or real estate. Under 18 U.S.C. § 1956 the maximum is 20 years, and under § 1957 transactions over $10,000 in criminal proceeds carry up to 10 years.
- Unlicensed Money Transmitting: Peer-to-peer traders and informal exchangers who convert crypto to cash for others can be charged for operating a money transmitting business without registration, even when no one was defrauded.
- Ponzi and Investment Schemes: Promoters of pooled “trading” or mining programs are charged when new investor money allegedly paid earlier investors. Your role, whether founder, promoter, or participant, shapes both the charges and the sentencing exposure.
- Bank Fraud and Identity Theft: Funding crypto purchases with loans or accounts opened on misleading information, or using another person’s identity to open exchange accounts, brings in these counts, along with aggravated identity theft in some cases.
- Pandemic Loan Fraud Tied to Crypto: PPP and EIDL proceeds moved into digital assets are a recurring pattern in South Florida. Congress extended the limitations period for these offenses to 10 years, so older loans remain open to prosecution.
- Asset Forfeiture: Wallets, exchange balances, and related property can be seized through criminal or civil forfeiture, sometimes before any charge is filed, and the firm contests these seizures alongside the criminal case.
What to Do If Agents Contact You or Your Accounts Are Frozen
If federal agents reach out, be courteous, give no substantive answers, and ask for the agent’s name and contact information. Do not try to explain the transactions, even if you are sure you did nothing wrong. A statement that turns out to be incomplete can become its own charge for false statements, and agents are often interviewing you after months of quiet work reviewing records you have never seen. Call a Miami federal criminal defense attorney before you respond to a request for an interview, a target letter, or a grand jury subpoena.
Preserve everything. Do not delete wallet apps, exchange accounts, chats, or emails, and do not move funds between wallets to “protect” them. Deleting data or shifting assets after an investigation begins can look like obstruction of justice, and it hands prosecutors a narrative they would not otherwise have. Write down what you remember about who you dealt with, when, and through which platform, but share that only with your lawyer.
If your bank or exchange freezes funds, or agents have seized a device, tell your attorney immediately. There may be ways to contest the seizure, document the legitimate source of the money, or protect property that has nothing to do with the allegations. Early involvement also opens options that vanish after an indictment: presenting information to prosecutors before charging decisions are final, negotiating the scope of charges, and arranging a voluntary surrender instead of an arrest.
Federal cases in this region are typically heard in Miami at the Wilkie D. Ferguson, Jr. United States Courthouse, the C. Clyde Atkins United States Courthouse, or the James Lawrence King Federal Justice Building, and the Southern District also holds court in Fort Lauderdale, West Palm Beach, Fort Pierce, and Key West. Appeals go to the Eleventh Circuit. If the matter is charged in state court instead, felonies in Miami-Dade are heard in the Eleventh Judicial Circuit’s Circuit Criminal Division, and a theft or fraud-type charge there is graded by value: property worth $20,000 or more but under $100,000 is a second-degree felony, and $100,000 or more is a first-degree felony.
Defenses That Matter in Digital Asset Prosecutions
Intent is the center of most cases. Fraud requires proof that a defendant knowingly set out to deceive, and a project that collapsed, a token that lost value, or a partner who disappeared does not by itself show a crime. We look at what you actually said to investors, what the technical team told you, and whether you relied on lawyers, accountants, or developers. Good-faith reliance and honest mistakes are legitimate defenses, not excuses.
Attribution is another. Proving that a wallet moved funds is not the same as proving who held the keys. Shared devices, custodial accounts, and compromised credentials all complicate the government’s story. Search and seizure issues also arise often: warrants for phones and cloud accounts must be specific, and evidence gathered beyond a warrant’s scope can be challenged through a motion to suppress.
The government also has to fit the conduct to the statute. Whether a token is a security, whether a peer-to-peer trader was operating a business, and whether a transaction was designed to conceal rather than simply to move value are legal questions that can narrow or end a case. At sentencing, loss valuation, role adjustments, and the treatment of volatile assets can lower a guideline range substantially, and a strong presentation gives the judge reasons to impose less.
Questions About Cryptocurrency Fraud Charges
Is owning or trading cryptocurrency illegal?
No. Buying, holding, and trading digital assets is lawful. Prosecutions arise when the government alleges deception of investors, laundering of criminal proceeds, evasion of registration or reporting rules, or tax violations tied to the activity.
What federal crimes are usually charged in crypto fraud cases?
Wire fraud, securities fraud, conspiracy, and money laundering are the most common. Bank fraud, identity theft, operating an unlicensed money transmitting business, and false statements to agents or lenders also appear regularly.
Can I be investigated before I am arrested?
Yes, and that is the usual pattern. Investigations often run for months or years through subpoenas to exchanges and banks, and the first sign may be a target letter, a grand jury subpoena, a frozen account, or an agent at your door.
What is a target letter?
It is a notice from the United States Attorney’s Office that you are a target of a grand jury investigation. It is one of the best moments to bring in a lawyer, because there may still be room to influence whether charges are filed and what they are.
Should I talk to agents if I believe I did nothing wrong?
Not without counsel. Innocent people make damaging mistakes in interviews, and an inaccurate answer can support a separate false statement charge. A lawyer can decide whether and how any information should be shared.
Can the government seize my crypto before I am charged?
Yes. Digital assets can be seized through civil or criminal forfeiture, and exchange accounts may be frozen on a warrant. The firm contests forfeiture and works to recover property that is not connected to any alleged offense.
How long after a transaction can federal fraud be charged?
It depends on the offense. Some federal fraud crimes have longer limitation periods than the general rule, and PPP and EIDL fraud can be charged up to 10 years later. In Florida state court, a first-degree felony generally must be commenced within 4 years and most other felonies within 3 years.
How does the government value crypto for sentencing?
The loss figure drives much of the federal guideline range, and digital assets fluctuate. The date used for valuation, and whether investors received anything of value back, can move the number significantly, so it is routinely contested.
Does it matter that I used a foreign exchange or counterparties abroad?
It can. Cross-border transfers draw attention from agencies like HSI and can support money laundering theories, and records may sit overseas. The firm has handled matters involving Colombia, Mexico, the Bahamas, Ecuador, and Cuba and can address the added layers.
Can a crypto fraud case affect my professional license or business?
A felony charge or conviction can prompt licensing review, bank closures, and loss of business relationships, and forfeiture can strip operating funds. Planning for these consequences early is part of building the defense.
Do I need a lawyer if I only received funds from someone else’s scheme?
Yes. Recipients are sometimes treated as participants or as money laundering defendants. Whether you knew or should have known where the funds came from is exactly what a lawyer needs to address before you answer any questions.
Is it worth hiring a lawyer if I have not been charged yet?
Usually, yes. Before an indictment there may be opportunities to present information, negotiate, and protect assets that disappear afterward.
Serving Cryptocurrency Fraud Clients Across Miami-Dade and South Florida
From downtown Miami, Brickell, and Wynwood through Coral Gables, Kendall, and Doral, the firm represents people facing digital asset investigations throughout Miami-Dade County. That includes Miami Beach, Aventura, North Miami, Hialeah, Miami Lakes, Homestead, and Miami Gardens, along with neighboring communities where investors, traders, and small business owners were drawn into the crypto market.
The firm also appears in federal court in Broward County, Palm Beach County, and Monroe County, and takes cases in federal courts across the country. Clients in the Florida Keys, Fort Lauderdale, and West Palm Beach areas can reach the firm at any hour, and Spanish-speaking clients and families are welcome to discuss their case directly with Mr. Hassan.
Speak With a Miami Cryptocurrency Fraud Defense Attorney Today
If agents have contacted you, your account has been frozen, or you have received a target letter or indictment over digital asset activity, talk to a Miami cryptocurrency fraud defense attorney before you do anything else. The firm is available 24 hours a day, 7 days a week, and consultations are confidential. Call the Law Office of Nayib Hassan, P.A. to start building your defense while you still have the most options.