Polish prosecutors charge fifth suspect in $94M BitBay crypto probe

Polish prosecutors have filed charges against a fifth suspect in a sprawling investigation tied to BitBay, the Polish cryptocurrency exchange that later became Zondacrypto. The platform halted trading in April after customers reported frozen withdrawals, with estimated losses of at least $94 million, according to filings in the case. The latest charge expands the criminal inquiry that has run for several years and now involves multiple defendants.

What is the BitBay case and who is accused?

The case centers on alleged misconduct at BitBay, an exchange founded in Poland that built one of the largest user bases in Central Europe before it rebranded as Zondacrypto in 2021. Prosecutors have now charged five individuals, with the fifth suspect added to an indictment that earlier rounds had already put before a Polish court. The specific allegations include mismanagement of customer funds and the failure to honor withdrawal requests during a period when trading activity on the platform surged.

The defendants include former executives and insiders connected to the day-to-day operations of the exchange, based on descriptions in earlier coverage of the investigation. Polish authorities have treated the matter as a financial crime case rather than a securities case, which means sentencing can include prison terms if convictions are secured. The fifth defendant is accused of actions that prosecutors say contributed to the gap between customer deposits and assets available to meet redemption requests.

BitBay's transition to Zondacrypto took place in 2021, when the company moved its headquarters and registered entity outside Poland. The rebrand did not resolve the legal exposure of the earlier Polish corporate structure, and that exposure is what prosecutors are now pursuing. The exchange stopped trading in April, several years after the rebrand, after customers again reported frozen withdrawals.

Why does this matter now for crypto markets?

The new charge arrives at a moment when European regulators and prosecutors are pressing harder on centralized exchanges that failed during the 2022 to 2024 downturn. For traders, the headline matters because it shows that legal exposure from earlier boom-era exchange operations is still landing in courtrooms years later. When a domestic legal case produces a new indictment, exchanges operating in the same jurisdiction often see temporary pressure on withdrawals, even if their own books are clean.

Polish retail investors who held funds on the platform during the freeze are the most directly affected group. The estimated $94 million in losses is large enough to attract attention from the European Securities and Markets Authority, which has tracked cross-border retail harm tied to crypto platforms. Comparable past cases, including enforcement actions against other European exchanges, have produced partial recoveries through court-supervised asset distributions, but the pace has been measured in years rather than months.

For institutional desks, the news is a reminder that centralized exchange counterparty risk remains a live issue in markets where retail flow still drives a meaningful share of trading volume. Audits, proof-of-reserves attestations, and segregated custody arrangements are now standard questions for any platform onboarding new clients. The BitBay case reinforces that the absence of those controls can produce outcomes that take years to unwind in court.

What happened at BitBay before the freeze?

BitBay launched in 2014 and grew through the 2017 initial coin offering boom by listing a wide range of altcoins and accepting deposits in Polish zloty. The platform became the largest cryptocurrency exchange in Poland by reported trading volume and operated for several years without major regulatory friction. It ran an affiliated mining operation and sponsored local crypto education events, which helped it build a recognizable brand among retail users.

In 2021, ownership and the corporate entity shifted abroad and the platform was rebranded to Zondacrypto. That transition took the operating company outside Polish supervisory oversight, which at the time had limited authority over crypto firms under the national anti-money laundering framework. The rebrand preserved the user base and brand recognition but severed direct supervisory links between the platform and Polish regulators.

After the rebrand, the company continued to onboard Polish customers through a separate Polish-registered entity. That structure came under scrutiny after a wave of customer complaints in late 2025 and early 2026 about delayed fiat withdrawals. In April 2026, the exchange stopped trading on its Polish-facing platform after the backlog of withdrawal requests exceeded the platform's stated liquidity.

How does this fit the broader European enforcement trend?

Polish prosecutors have built a record of pursuing crypto-related financial cases, including enforcement actions against pyramid schemes and token sales that collapsed during prior cycles. The European Union's Markets in Crypto-Assets Regulation, which entered full application in late 2024, gave national authorities new tools to oversee crypto-asset service providers operating across borders. Polish authorities have used that framework alongside older financial crime statutes in the BitBay case.

Comparable investigations in the region include probes into other European exchanges that suspended withdrawals during the same period. Those cases have generally proceeded in phases, with early rounds focused on freezing suspect assets and later rounds producing indictments of executives and insiders. The fifth charge in the BitBay case fits that pattern and suggests prosecutors believe they have enough evidence to move toward trial.

The scale of the alleged losses, at $94 million or more, places the case among the larger retail investor harm events in Central Europe since the 2022 downturn. That magnitude tends to attract continued prosecutorial resources and can produce cooperation agreements with former employees who become witnesses. It also raises the profile of class-style recovery mechanisms that Polish courts have used in past financial fraud cases.

What should traders and affected users watch next?

The first near-term catalyst is the formal arraignment of the fifth defendant, which typically follows a charge within several weeks in Polish criminal procedure. That hearing will establish whether the defendant contests the charges or enters a plea, both of which shape the timeline toward trial. A trial date setting would give affected users a clearer sense of when any court-supervised recovery process could begin.

A second catalyst is any asset freeze or seizure order that prosecutors seek as part of the broader case. Earlier rounds of the investigation produced freezes on assets tied to the platform and its operators, and a new round could expand that pool. Recoveries in past Polish financial fraud cases have ranged from a small percentage to a majority of claimed losses, depending on how much traceable wealth remains.

For traders more broadly, the case is a reminder to check the corporate structure of any centralized exchange they use, including whether the operating entity sits inside or outside jurisdictions with active crypto oversight. Exchanges that operate through multiple registered entities in different countries can create confusion about which regulator has authority when problems arise. Withdrawal processing times, audited reserves, and the location of customer fund custody are practical signals worth monitoring on any platform.

Finally, watch for any cross-border cooperation between Polish prosecutors and regulators in the jurisdiction where Zondacrypto now operates. Information-sharing agreements between European supervisory authorities have expanded under MiCA, and a formal request from Polish authorities could produce additional disclosures about the platform's current operations. Those disclosures often arrive through court filings rather than press releases, so legal case databases are the most reliable source.