Block discloses 28,355 BTC in first-ever proof-of-reserves as Strategy stacks 818K coins

Jack Dorsey&#x27;s Block Inc. published its inaugural proof-of-reserves report showing 28,355 <a class="ticker-mention" href="/en-US/token/btc">BTC</a> as of March 2026 — 19,357 held on behalf of customers and 8,997 in corporate reserves, worth roughly $2.2 billion at current prices. The company used on-chain signatures so anyone can independently verify the holdings are actively controlled, not just historically recorded.

Meanwhile, Michael Saylor&#x27;s Strategy added another 3,273 BTC for approximately $255 million, bringing its total to 818,334 BTC acquired at an average of ~$75,537 per coin. The purchase extends a buying streak that has coincided with five consecutive sessions of net inflows into U.S. spot Bitcoin ETFs totalling $1.1 billion, before a single outflow day broke the run.

BTC is currently trading around $76,500, recovering from a $63,000 low earlier this year. Analysts point to $75,000 as a firm support floor, with a clean break…