The mysterious disappearance of two successive CEOs has thrown Poland's largest cryptocurrency exchange, Zondacrypto, into turmoil. In 2022, founder Przemysław Kral vanished from a fuel depot in southwest Poland, leaving a desperate voice message begging his sister to send Bitcoins for his release. He has not been heard from since, and his family believes he was killed. In April 2024, his successor, lawyer Jacek Zemło, also disappeared after posting a video pleading with customers not to lose faith. Zemło claimed Zondacrypto held Bitcoins worth over $330 million but admitted only Kral knew the codes to access the vault.

Zondacrypto's website went dark in April, locking hundreds of thousands of clients out of their accounts. Its ZND token has lost over 99.9% of its value. Polish Prime Minister Donald Tusk has accused the exchange of ties to Russian intelligence, organized crime, and right-wing politicians. The saga underscores the crypto industry's ongoing struggle with fraud and criminality, despite growing mainstream acceptance supported by figures like President Donald Trump, whose family crypto business has earned about $1.4 billion.

Kral, a coal miner's son from Katowice, built Bit Bay in 2014, later rebranding as Zondacrypto. He cultivated a flashy "crypto king" persona, splitting time between Poland and Dubai. Polish regulators began questioning the company in 2018, prompting Kral to seek new bases in Switzerland and Estonia. The exchange's collapse marks another catastrophic failure for the sector, following the 2022 FTX implosion.