a16z Backs $33M Raise for Blockchain Game Studio Proof of Play - Proof of Play, a decentralized game studio and blockchain technology company, has raised $33 million in a seed round co-led by Andreessen Horowitz (a16z) general partner Chis Dixon and Greenoaks founder and managing partner Neil Mehta, according to a press release provided to Unchained. The funds will help Proof to ...