Blockchain infrastructure firm Zerohash is in talks to raise $250 million at a $1.5 billion valuation, according to a person with knowledge of the matter. The company recently pulled out of acquisition talks with Mastercard, CoinDesk reported, though the payments giant is still considering a strategic investment in Zerohash, and discussions remain ongoing. The raise comes amid rising demand for enterprise-grade crypto infrastructure, as more financial institutions move to offer tokenized assets, stablec ...