Dan Held is the co-founder and director of business development of Interchange, an institutional-grade cryptocurrency portfolio reconciliation tool. He was part of the original 2013 crypto Meetup group in San Francisco that included the founders of Coinbase, Ripple, Kraken and other major Bitcoin and blockchain companies. Held served as the director of product at Blockchain.com, which became the de facto search engine for the Bitcoin economy, and he built some early crypto products including ChangeTip (later acquired by Airbnb) and ZeroBlock (later acquired by Blockchain.com in the second-ever all-Bitcoin acquisition). Held has recently published Bitcoin-specific writings such as “Planting Bitcoin” and is a contributor to various publications, including Bitcoin Magazine.