Exabits, a crypto-artificial intelligence startup, closed a $15 million seed round at a valuation of $150 million. Exabits said Tuesday that Hack VC led the round and several other investors participated, but declined to name them. Exabits co-founder Hoansoo Lee said that Exabits began financing in July this year and closed the round in October. This seed round brings Exabits' total funding to $20 million. Hoansoo Lee declined to comment on the structure of the round.