An anonymous investor identified as “D.B.” has sued Coinbase in California federal court after the exchange froze roughly $55 million in DAI that investigators traced to an August 2024 phishing theft. The case turns on a difficult question for crypto markets: what happens when stolen assets are visible on-chain, frozen by a centralized platform, but still require off-chain legal approval before they can be returned. The dispute exposes the gap between blockchain traceability and traditional legal recovery.
The complaint challenges Coinbase’s refusal to release the frozen funds without a court order. D.B. is seeking disgorgement, declaratory relief, a mandatory injunction and a constructive trust, arguing that the assets should be preserved and returned to the rightful owner. At stake is whether an exchange can hold traceable stolen funds while waiting for judicial confirmation of ownership.
A Phishing Theft Becomes a Legal Test for Frozen Crypto
Court filings say the August 2024 theft began with a compromised DeFi Saver login and involved a tool referred to as the “Inferno Drainer.” The attack allegedly diverted approximately $55 million in DAI, which investigators later traced into a retail account on Coinbase. The exchange froze the balance to prevent the funds from being moved. That freeze stopped dissipation, but it also turned recovery into a legal bottleneck.
According to the complaint, D.B. provided sworn proof of ownership and on-chain tracing that linked the Coinbase-held DAI to the theft. Coinbase still declined to release the assets without judicial direction. The plaintiff’s core argument is that traceable ownership evidence should be enough to prevent Coinbase from retaining control of the funds indefinitely.
The lawsuit advances several remedies aimed at forcing resolution. The unjust enrichment claim seeks disgorgement of any benefit Coinbase may have received from holding the DAI. The request for declaratory relief asks the court to establish ownership, while the mandatory injunction would compel return of the traceable assets. The proposed constructive trust would treat Coinbase as holding the funds for the rightful owner, not for its own benefit.
Compliance Risk Collides With Asset Recovery
Coinbase’s position, as described in the filings summarized by the complaint, centers on legal exposure and regulatory obligations. The exchange has conditioned release on a court determination of ownership, arguing that it must avoid sending funds to the wrong party and remain aligned with AML and KYC requirements. For Coinbase, the issue is not only who claims the assets, but whether releasing them creates regulatory risk.
That defense highlights the operational dilemma facing centralized venues. Public blockchains can make asset flows visible, but exchanges still operate under legal, compliance and customer-identification frameworks that do not automatically treat on-chain tracing as final proof of entitlement. Crypto’s transparency can identify the path of stolen funds faster than the legal system can authorize their return.
Funds may be technically identifiable and even frozen for protection, yet remain unavailable while legal ownership is adjudicated. Traceable assets can still become operationally illiquid when centralized platforms impose legal holds.
A prolonged freeze can raise the effective cost of capital, especially when large balances are trapped inside an exchange process rather than freely available for rotation. The practical concern is not only asset recovery, but the time value of frozen liquidity.
The court’s ruling could shape how centralized exchanges handle suspicious or recovered funds in future cases. A decision favoring swift release based on tracing evidence could pressure venues to build faster recovery playbooks, while a ruling requiring strict judicial confirmation could reinforce conservative hold policies. Either outcome will influence how institutions price custody risk in a market where on-chain proof and legal authority do not always move together.