The strongest evidence in this run comes from Strategy's own press release, "Strategy Announces Closing of $2.521 Billion STRC Stock Initial Public Offering," and the matching SEC filing "EX-99.1." These confirm the general mechanism: Strategy has used STRC financing proceeds to acquire Bitcoin, including a documented purchase of 21,021 BTC. The SEC prospectus "424B5" further confirms STRC is a real Strategy preferred-stock instrument connected to its Bitcoin treasury strategy. However, none of these primary sources mention the specific statement that Strategy acquired an estimated 493 BTC on the cited day, nor do they compare that amount with one day of mined supply. The exact 493-BTC figure surfaced only in search snippets, not in validated primary evidence. Because the supplied X links could not be fetched and no authoritative source in this run substantiated the 493 number, the claim cannot be confirmed. At the same time, the broader idea that STRC-related financing can fund Bitcoin purchases is supported by the Strategy and SEC sources.