Matthew Zipkin is a programmer and investor that has been involved in the Bitcoin community since 2013. He has contributed code and discussion to many open-source Bitcoin repositories including Bitcoin Core which is the software responsible for maintaining the Bitcoin blockchain and peer-to-peer network. Zipkin also edits and guest-hosts the Let's Talk Bitcoin podcast which has produced over 350 episodes for thousands of listeners. In 2016 Zipkin released The Bitcoin Block Clock, a beautiful network visualizer and Bitcoin interface running on top of a full node -- a computer that watches the Bitcoin network and synchronizes the complete blockchain. He continues to create "Blockchain Art" by bringing the technology of crypto-currency into an exciting tangible form.