Celsius Network and BlockFi were two of the largest centralized crypto lending platforms, offering retail depositors 8-18% yields on crypto deposits — rates that dwarfed anything available in traditional banking. Both companies attracted billions in deposits from users who treated them like high-yield savings accounts. Then both collapsed in 2022, wiping out billions in customer funds.
Celsius, founded by Alex Mashinsky in 2017, reached over $20 billion in assets under management by early 2022. Mashinsky was a charismatic CEO who did weekly AMAs promising users their funds were safe. Behind the scenes, Celsius was taking enormous risks: deploying customer deposits in illiquid DeFi strategies, making leveraged bets, and using new deposits to fund withdrawal requests — a structure that looked uncomfortably like a Ponzi scheme. When crypto prices crashed in June 2022, Celsius froze withdrawals, filed for bankruptcy, and revealed a $1.2 billion hole in its balance sheet.
BlockFi followed a similar trajectory. Founded by Zac Prince in 2017, BlockFi grew rapidly by offering competitive yields and institutional lending services. But BlockFi had significant exposure to both Three Arrows Capital (which defaulted) and FTX/Alameda (which collapsed). BlockFi filed for bankruptcy in November 2022, weeks after FTX. Prince was later charged with fraud by the SEC.
The CeFi lending collapse taught the industry a brutal lesson: “not your keys, not your coins” applies to lending platforms too. Celsius and BlockFi offered higher yields than DeFi because they were taking risks that DeFi protocols wouldn’t (and couldn’t) take: leverage, illiquid investments, and counterparty exposure to insolvent firms. The higher yield was compensation for higher risk that depositors didn’t understand they were taking. When the risks materialized, the consequences were devastating and irreversible.
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