Coinspeaker Bitcoin Rap Battle Explains It All: ‘The System Is So Broken, We Need That Crypto Token’According to a Greylock spokeswoman, Hoffman “hopes the video gets more people talking about crypto and its evolving role in global commerce.” Greylock invested in cryptocurrency startup Coinbase in 2017.Bitcoin Rap Battle Explains It All: ‘The System Is So Broken, We Need That Crypto Token’