Despite Michael Saylor’s repeated refusals to publish a proof of reserves for the 597,325 bitcoin (BTC) at MicroStrategy (MSTR), Coinbase CEO Brian Armstrong decided to publicly doxx their most probable location.

Disregarding Saylor’s concerns that disclosing the location of the coins could create the risk of social engineering and wrench attacks, Armstrong tweeted about their location while bragging about Coinbase’s “institutional team.”

During the thinly veiled disclosure, he admitted that eight of the top 10 publicly traded companies with BTC on their balance sheets use Coinbase Prime. That makes it highly likely that MicroStrategy holds BTC at Coinbase Prime.

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