Cooley LLP has a number of people dedicated to blockchain and digital currency:
<a href="https://www.linkedin.com/in/marco-santori-7ab37b28/" rel="nofollow">https://www.linkedin.com/in/marco-santori-7ab37b28/</a><p><a href="https://www.cooley.com/news/coverage/2016/2016-11-03-acclaimed-fintech-team-joins-cooley" rel="nofollow">https://www.cooley.com/news/coverage/2016/2016-11-03-acclaim...</a><p>Never dealt with them, but a place to start.
He's not in the Bay area, but you might try this guy:
<a href="https://www.linkedin.com/in/provencounsel/" rel="nofollow">https://www.linkedin.com/in/provencounsel/</a><p>I have not worked with him. Caveat emptor.