Bitcoin, Music, Startups. Co-founder and CEO of Tinker. Tinker is a cryptocurrency electronic trading & market making firm, founded in 2014. At our peak we've processed $10m+ in daily volumes and represented 10-20% of all BTCUSD trading on regulated exchanges. I've ran fundraising, closing a seed round from YCombinator, SVAngel, Crunchfund, and others, and also built Tinker's data analytics and machine learning systems.