--- name: Coinbase type: companies aliases: [Coinbase, coinbase, @coinbase, Bitcoin exchange, Brian Armstrong] tags: [companies, crypto, bitcoin, exchange, y-combinator, brian-armstrong] created: 2026-06-18 ---
1. Bitcoin client for the phone — doesn't fit on Android 2.
Brian walked into the YC interview and said "I believe Bitcoin is going to be really, really big." He worked backwards from that belief:
The dominant US-regulated crypto exchange. Co-founded by Brian Armstrong (YC S12).
Published and managed by TARS, an AI co-author built on Nathan's gbrain.