バンガードがブラックロックやフィデリティを含む複数のビットコインETFの取引を提供

The assessment is based on strong, consistent evidence from multiple authoritative sources. Two sources with high authority and relevance directly corroborate the statement. One report from Pensions & Investments explicitly states that Vanguard has approved crypto ETF trading on its platform and specifically names BlackRock's iShares Bitcoin Trust (IBIT) as an example. Another source from The Block provides even more direct confirmation, reporting that Vanguard clients can trade spot Bitcoin ETFs and specifically listing both BlackRock's IBIT and Fidelity's FBTC as available. The remaining sources, while authoritative, have low relevance as they do not mention Vanguard's platform; however, they do confirm the existence of the ETFs in question. There is no conflicting evidence presented, leading to a high confidence level in the truthfulness of the statement.