The claim is highly accurate according to reports from March 4, 2026. Multiple sources (CoinDesk, BitcoinTreasuries, and social media analysts) confirm that Michael Saylor's company, Strategy, utilized its STRC preferred stock to fund a Bitcoin purchase that day. While estimates vary slightly between 815 BTC and 'over 1,000 BTC' (possibly due to a confusion between the $815 million issuance value and the BTC count), the specific figure of 815 Bitcoin is explicitly cited in reports by analysts like Conor Quigley. The detail regarding the purchase exceeding the daily mined supply (~450 BTC) is also a consistent theme in the reporting.