Y Combinator, the Silicon Valley startup incubator behind Airbnb, Coinbase and Stripe, is collaborating with Base and Coinbase Ventures to create the next wave of so-called “Fintech 3.0” companies, according to a blog post on Tuesday. The firms have opened applications to these "Fintech 3.0" companies, saying it is looking for themes such as expanding stablecoins beyond the dollar into local currencies, tokenizing assets such as stocks and credit markets and building consumer-facing applications including ...