BlockTower Capital founder Ari Paul publicly accused Coinbase of losing roughly $25 million of his firm's assets and concealing hacks totaling more than $1 billion across a dozen institutions. Coinbase flatly denies it, Paul says active litigation prevents him from publishing his evidence, and the industry has spent the weeks since arguing about who is telling the truth.

The argument misses the most uncomfortable fact in the story: nobody outside the two parties involved can check. That is a strange place to land for an industry built on an asset designed so that no one would have to take anyone's word for anything. A custodian holding assets for much of the market stands accused of billion-dollar concealment, and the only tools available for evaluating the claim are the accuser's credibility and the custodian's word. The lesson for every company holding bitcoin, or deciding whether to, is that bitcoin on a balance sheet presents a controls problem, and until a custody arrangement can answer the same questions a board asks about the company’s bank and brokerage accounts, who can move the money and who signs off, stories like this one will stay unanswerable.

Every other account a company touches comes with governance as a default. A corporate bank account has named users, defined roles, approval rules on withdrawals and an audit trail that a controller can hand to an auditor. A brokerage account has the same. The moment a business buys bitcoin, all of that disappears into one of two places: a single exchange login or a hardware wallet in somebody's drawer.

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