[Vanguard Executive: If Tokenization Is Not Mainstream, Bitcoin Is Just a Digital Toy] Vanguard executive John Ameriks stated during the 'ETFs in Depth' panel discussion that blockchain technology itself is very appealing to Vanguard, as it enables faster settlement, improved collateral efficiency, and reduced costs. John Ameriks raised the question of whether blockchain could be utilized without involving cryptocurrencies and pointed out that if asset tokenization cannot become mainstream, Bitcoin, in his view, is merely a 'digital toy.'