Square, another payments company, bought $50 million of Bitcoin and changed its name to Block, in part to signify its work with blockchain technology. Tesla bought $1.5 billion of it. The venture capital firm Andreessen Horowitz raised $4.5 billion for a fourth cryptocurrency-focused fund, doubling its previous one.Excitement hit a peak in April last year when Coinbase, a cryptocurrency exchange, went public at an $85 billion valuation, a coming-out party for the industry. Bitcoin topped $60,000 for the first time.Last summer, El Salvador announced that it would become the first country to classify Bitcoin as legal tender, alongside the U.S. dollar. The country’s president updated his Twitter profile picture to include laser eyes, a calling card of Bitcoin believers. The value of El Salvador’s …
