Born in 1976, Jack Dorsey co-founded Twitter — one of the main social media platforms used by crypto market participants. He also co-founded Square, an emerging finance and payments service. In his early years, before his work on Twitter, the tech visionary built a software solution for vehicle dispatching.

A proponent of Bitcoin, its technology and its ecosystem, Dorsey has commented on the crypto industry on several occasions. He is a highly influential voice in the technology industry, which means his Bitcoin advocacy is heard by many.