Four years after the FTX collapse in November 2022, major crypto exchanges continue to publish proof-of-reserves systems demonstrating control over customer assets while remaining opaque about their liabilities and corporate obligations. Merkle tree and zero-knowledge proof mechanisms only validate specific holdings at a given moment, failing to cover bank loans, taxes, legal claims, or guarantees made to affiliated entities. Platforms like Binance, OKX, Kraken, and Crypto.com offer varying disclosure levels, from account-level cryptographic verification to aggregate reserve statements, without any unified industry standard. The Public Company Accounting Oversight Board warns that these reports fall outside standard audit oversight and provide an inadequate basis for assessing actual solvency. Unlike Coinbase, a listed company that publishes audited consolidated financial statements covering debt, derivatives, and related-party transactions, most crypto exchanges operate with fragmented, asset-only disclosure models that cannot establish true solvency.
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