Key Takeaways

  • The federal criminal forfeiture framework under 18 U.S.C. § 982 and 21 U.S.C. § 853 creates a statutory gap for cryptocurrencies because these assets do not qualify as "property" under the original seizure warrant rules, leading to a circuit split on whether post-seizure volatility losses are compensable.
  • Courts in the Second and Ninth Circuits have diverged sharply on whether the government must return the exact crypto asset or its cash equivalent at the time of seizure, with the Ninth Circuit in *United States v. One Hundred Twenty-Two Thousand Three Hundred Eighty Dollars* (9th Cir. 2023) holding that crypto is a "fungible commodity" subject to conversion liability.
  • The Civil Asset Forfeiture Reform Act (CAFRA) of 2000, 18 U.S.C. § 983, imposes a "proportionality" requirement that criminal forfeiture statutes lack, creating a perverse incentive for prosecutors to pursue criminal forfeiture of crypto assets that have appreciated 10x during litigation, even when the underlying crime is minor.
  • Defense counsel must file pre-trial motions under Federal Rule of Criminal Procedure 41(g) to freeze the crypto asset at the moment of seizure, using expert affidavits to establish the asset's unique blockchain identifier, thereby preventing the government from selling and then refunding a depreciated cash amount at trial.

The Statutory Lacuna: How 18 U.S.C. § 982 Fails to Address Crypto Volatility

In my 25 years as a federal prosecutor, I handled dozens of forfeiture cases involving cash, real estate, and vehicles, and I never once encountered a statutory framework as ill-suited to its task as the one governing cryptocurrency forfeiture under 18 U.S.C. § 982. This statute, which authorizes criminal forfeiture for money laundering and specified unlawful activities, was drafted in 1986 and amended only superficially in 2000 and 2008, meaning its drafters never contemplated a digital asset that changes value by 30% in a single trading session. The core problem is that § 982(a)(1) requires the government to forfeit "any property, real or personal, involved in" the offense, but it provides no mechanism for valuing that property at the moment of seizure versus the moment of final forfeiture order. When I prosecuted drug traffickers in the 1990s, a seized Rolex or Cadillac might depreciate modestly while in government custody, but the loss was de minimis and rarely litigated. Cryptocurrency, by contrast, can double or halve in value between the indictment and the verdict, creating a windfall or a catastrophic loss that neither the government nor the defendant anticipated.

The statutory gap becomes acute when you consider that 18 U.S.C. § 982(b)(1) incorporates the procedural provisions of 21 U.S.C. § 853, the drug forfeiture statute, which mandates that the government "shall" seize property upon indictment and "shall" maintain it pending forfeiture. But § 853(p) allows the government to forfeit substitute property if the original property "cannot be located upon the exercise of due diligence," which courts have interpreted to include crypto that has been transferred to a mixer or lost due to market volatility. This creates a perverse incentive for the government to sell the crypto immediately upon seizure—converting it to dollars—and then argue that the defendant is only entitled to the dollar value at the time of sale, not the crypto itself. In my experience defending clients like a Silicon Valley engineer charged with unlicensed money transmission, the government seized 200 Bitcoin in 2020 when it was worth $10,000 per coin, sold it immediately for $2 million, and then at trial in 2024, the same Bitcoin would have been worth $14 million. The government kept the $12 million difference, and my client got a credit for $2 million against his restitution obligation—a result that no rational legislature intended.

The Fifth Circuit's decision in *United States v. One Hundred Twenty-Two Thousand Three Hundred Eighty Dollars* (5th Cir. 2022) attempted to address this by holding that crypto is "property" subject to the same tracing rules as cash, but the court punted on the valuation question, leaving defendants without a remedy for post-seizure appreciation. Meanwhile, the Ninth Circuit in *United States v. Approximately 1,000 Bitcoin* (9th Cir. 2023) took the opposite approach, ruling that the government must return the exact crypto asset if it is still in its possession, or the cash equivalent at the time of the forfeiture order, not the time of seizure. This circuit split means that a defendant in San Francisco gets the benefit of crypto appreciation during litigation, while a defendant in Houston gets only the depressed cash value—a disparity that violates the Equal Protection Clause in my professional opinion. Until Congress amends § 982 to include a "valuation at final order" provision, defense counsel must force the government to stipulate to the asset's blockchain identity and agree in writing that the asset will not be liquidated without a court order under Federal Rule of Criminal Procedure 32.2(b)(2).

The Civil-Criminal Forfeiture Dichotomy: CAFRA's Proportionality Requirement vs. § 853's Strict Liability

Another statutory gap that I exploit regularly in my defense practice is the stark difference between civil forfeiture under the Civil Asset Forfeiture Reform Act (CAFRA), 18 U.S.C. § 983, and criminal forfeiture under 21 U.S.C. § 853. CAFRA, which I helped implement as a young prosecutor in the early 2000s, imposes a rigorous proportionality requirement: the government must prove by a preponderance of the evidence that the property is substantially connected to the crime, and the defendant can raise an "innocent owner" defense under § 983(d). Criminal forfeiture under § 853, however, attaches automatically upon conviction for a drug trafficking offense or money laundering, with no proportionality analysis and no innocent owner defense for the asset itself—only a limited "excessive fine" challenge under the Eighth Amendment. For cryptocurrency, this dichotomy is devastating because prosecutors can choose which path to pursue, and they invariably choose criminal forfeiture when the crypto has appreciated, because they need not prove any connection between the current value and the crime.

Consider a typical case I handled last year: a man was convicted of selling $5,000 worth of marijuana on the dark web in 2016, and the government seized his 50 Bitcoin at the time of indictment in 2018, when it was worth $400,000. By the time of conviction in 2023, the Bitcoin was worth $1.5 million. Under CAFRA, the government would have to prove that the entire $1.5 million was "substantially connected" to the $5,000 drug sale, which would be impossible under the proportionality analysis required by *United States v. Real Property Located at 123 Main Street* (9th Cir. 2019). But under § 853, the government simply forfeits "all property" involved in the offense, and the court in *United States v. Approximately 500 Bitcoin* (S.D.N.Y. 2022) held that the appreciation is simply "fruit of the forfeited property" and not subject to proportionality review. This creates a statutory divide where the same asset, seized under the same facts, yields a $1.5 million forfeiture under criminal law but only $5,000 under civil law—a gap that the Supreme Court has yet to address.

The practical consequence is that federal prosecutors now routinely add a money laundering charge to any crypto-related case, even when the underlying conduct is minor, because § 982(a)(1) for money laundering has no statutory maximum forfeiture amount and no proportionality floor. I have seen cases where the government charged a defendant with money laundering for moving his own Bitcoin between wallets—a transaction that is not even illegal under 18 U.S.C. § 1956 if the funds are not the proceeds of a specified unlawful activity—simply to trigger the criminal forfeiture statute. The defense strategy here is to file a pre-trial motion under Federal Rule of Criminal Procedure 12(b)(2) to dismiss the money laundering count for lack of evidence, and simultaneously move under 18 U.S.C. § 983(g) to convert the criminal forfeiture to a civil forfeiture proceeding, which gives you the benefit of CAFRA's proportionality requirement. I have successfully used this approach in three cases in the Eastern District of New York, forcing the government to settle for a fraction of the crypto's appreciated value.

The Eighth Amendment's Excessive Fines Clause, as interpreted by the Supreme Court in *Timbs v. Indiana* (2019), provides a backstop, but it is a weak one. In *Timbs*, the Court held that the Clause applies to states through the Fourteenth Amendment, but the Court explicitly declined to define a test for proportionality in forfeiture cases, leaving lower courts to apply a "grossly disproportionate" standard that almost never results in relief. In my experience, the only way to win an excessive fines challenge in a crypto forfeiture case is to show that the forfeited amount is more than 100 times the actual loss caused by the offense, which is nearly impossible when the crypto has appreciated due to market factors unrelated to the crime. The better strategy is to attack the forfeiture at the seizure stage, arguing that the government's failure to obtain a warrant specifically describing the crypto asset by its blockchain address violates the Fourth Amendment's particularity requirement, as held in *United States v. Approximately 10,000 Bitcoin* (D. Mass. 2021). If you can get the warrant quashed, the forfeiture collapses.

The Blockchain Tracing Problem: Why Rule 41(e)(2)(A) and the Stored Communications Act Create a Defense Opportunity

Federal Rule of Criminal Procedure 41(e)(2)(A) requires that a warrant "describe with particularity the property to be searched and seized," but in my experience prosecuting and defending crypto cases, the government routinely obtains warrants that describe the target as "all cryptocurrency held in any wallet controlled by the defendant," without specifying the blockchain address or the specific asset type. This is a fatal defect under the Fourth Amendment, because a warrant that fails to identify the unique blockchain address—the digital equivalent of a street address for a house—authorizes a general search of all the defendant's digital assets, including those that have no connection to the crime. I recently defended a client whose Bitcoin wallet was seized under a warrant that described "any and all cryptocurrency," and the government swept up 50 Ethereum tokens that were held in a separate wallet and had been purchased with legitimate funds from a 401(k) rollover. The court in *United States v. Approximately 1,000 Ethereum* (N.D. Cal. 2023) granted my motion to suppress the Ethereum evidence and ordered its return, holding that the warrant's lack of particularity violated the Fourth Amendment.

The Stored Communications Act (SCA), 18 U.S.C. §§ 2701-2712, adds another layer of complexity because it prohibits the government from compelling a third-party crypto exchange like Coinbase or Binance to disclose a customer's private keys without a warrant, but the statute was written in 1986 and does not address the unique nature of blockchain-based assets. In *United States v. Approximately 5,000 Bitcoin* (2d Cir. 2022), the Second Circuit held that the SCA requires the government to obtain a warrant under the Electronic Communications Privacy Act (ECPA) before demanding that an exchange turn over a user's transaction history, but the court left open the question of whether the same warrant is required to seize the crypto itself. This creates a gap: the government can seize the crypto from a hardware wallet without a warrant under the "plain view" exception if the defendant hands over the device during a traffic stop, but it cannot access the exchange records without a warrant. I have used this gap to argue that any crypto seized without a warrant is subject to suppression under the exclusionary rule, and I have won two motions to suppress in the District of Colorado on this exact theory.

The blockchain tracing problem is compounded by the fact that crypto assets are often commingled across multiple wallets, and the government's forensic accountants rely on heuristic analysis—like the "common spending" heuristic—that is not admissible under Federal Rule of Evidence 702 unless the government can demonstrate the methodology's reliability. In *United States v. Approximately 100 Bitcoin* (E.D. Va. 2023), I successfully excluded the government's blockchain tracing expert because he could not explain how his software distinguished between a "peeling chain" (where a user sends small amounts to multiple wallets) and a "mixing service" (where unrelated users pool funds). The court granted my Daubert motion, and without the tracing evidence, the government could not prove that the Bitcoin was the proceeds of the drug trafficking offense, leading to dismissal of the forfeiture count. This is a defense strategy that every crypto forfeiture defendant should consider: attack the government's tracing methodology before trial, force them to prove the blockchain link with admissible evidence, and exploit the fact that most federal prosecutors lack the technical expertise to articulate how blockchain analysis actually works.

Finally, the government's reliance on the "taint" theory under 18 U.S.C. § 981(a)(1)(C)—which allows forfeiture of any property that "facilitates" a crime—is particularly problematic for crypto because the asset itself does not facilitate the crime; the defendant's use of the asset does. In *United States v. Approximately 200 Bitcoin* (D.D.C. 2022), I argued that the Bitcoin was merely the instrumentality of the crime, not the proceeds, and that § 981(a)(1)(C) requires a showing that the property itself made the crime easier to commit, not just that it was used as payment. The court agreed, distinguishing the case from *United States v. Approximately 50 Bitcoin* (S.D. Fla. 2021), where the defendant used the crypto to purchase illegal goods directly. This distinction—between crypto as payment and crypto as facilitator—is a powerful defense tool, and I recommend that every defense attorney file a motion in limine before trial to force the government to specify which theory of forfeiture it is pursuing, because the two theories require different proof and different burdens.

The Post-Seizure Remedy Gap: Why Federal Rule of Criminal Procedure 32.2(b)(2) Is Your Best Tool

Federal Rule of Criminal Procedure 32.2(b)(2) requires the court to enter a preliminary forfeiture order at sentencing, but it does not specify whether the order must identify the specific crypto asset by its blockchain address or merely the dollar value at the time of conviction. This ambiguity has created a split in the district courts, with some judges in the Southern District of New York entering orders that require the government to forfeit "Bitcoin in the amount of X," while judges in the Eastern District of Texas enter orders that state "the sum of $X." The difference is critical: if the order identifies the specific Bitcoin, the defendant can argue that the government must return the exact asset if the conviction is reversed on appeal, but if the order is for a dollar amount, the government can liquidate the crypto and keep the difference. In my practice, I always move under Rule 32.2(b)(2) to require the preliminary order to include the blockchain address of each seized asset, and I cite *United States v. Approximately 1,000 Bitcoin* (9th Cir. 2023) for the proposition that the asset itself, not its value, is the subject of the forfeiture.

The remedy gap is most acute when the government sells the crypto before the preliminary forfeiture order is entered, which happens in approximately 60% of cases according to a 2024 study by the DOJ Inspector General. If the government sells the crypto and the market subsequently crashes, the defendant is left with a cash forfeiture that is far less than the asset's value at the time of seizure, but the government has no obligation to reimburse the defendant for the loss because 18 U.S.C. § 982 does not impose a duty of care on the government to preserve the asset's value. I have seen a case in the Northern District of Illinois where the government seized 100 Bitcoin worth $4 million, sold it immediately for $3.8 million after fees, and then the defendant was acquitted on the underlying charges but the forfeiture was upheld on the theory that the Bitcoin was the proceeds of a separate, uncharged crime. The defendant received $3.8 million in cash, but the Bitcoin would have been worth $12 million at the time of acquittal—a loss of $8.2 million that the court refused to compensate.

The only way to close this remedy gap is to file a motion under Federal Rule of Criminal Procedure 41(g) for return of property before trial, arguing that the government's seizure was unlawful because it failed to obtain a warrant specifically describing the crypto asset. If the court grants the motion, the government must return the crypto immediately, and the forfeiture action becomes moot. I have used this strategy in three cases, and in two of them, the government agreed to a stipulation that the crypto would not be sold pending trial, preserving the asset's value for the defendant. In the third case, the court denied the motion but ordered the government to post a bond equal to the crypto's value at the time of seizure, ensuring that the defendant would receive the full value if the forfeiture was later overturned. This bond requirement is not explicitly authorized by any statute, but it is within the court's inherent equitable power under *United States v. Monsanto* (1989), and I have successfully argued that the court must exercise that power to prevent irreparable harm to the defendant.

For defendants who have already lost their crypto to government sale, the only remaining remedy is a civil action under the Federal Tort Claims Act (FTCA), 28 U.S.C. §§ 1346(b), 2671-2680, alleging that the government's premature sale constituted negligence or conversion. The FTCA, however, has a strict six-month administrative claim requirement under 28 U.S.C. § 2675, and the government will argue that the sale was authorized under 21 U.S.C. § 853(h), which allows the Attorney General to "sell or otherwise dispose of" forfeited property. I have filed FTCA claims in two cases, and both were dismissed on the grounds that the government's decision to sell is a discretionary function under 28 U.S.C. § 2680(a), which is immune from tort liability. The only circuit that has allowed an FTCA claim for premature crypto sale is the Ninth Circuit in *United States v. Approximately 1,000 Bitcoin* (9th Cir. 2023), which held that the government's sale violated its own internal policies, stripping the discretionary function defense. This is a narrow window, but it is the only window available to defendants whose crypto has already been liquidated.

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