Mining Hardware Innovation - A modular Bitcoin mining machine named 'Proto Rig' has been created [1] - 'Proto Rig' delivers 1.5x more power per rack foot compared to other hardware [1] Industry Impact - The innovation is attributed to Twitter founder Jack Dorsey [1]

Bitcoin Mining - Jack Dorsey's Block is developing a Bitcoin mining machine [1] - The development aims to further decentralize Bitcoin mining [1] Technology - The machine's specifications and release date are currently unknown [1] Market Impact - The project could potentially impact the Bitcoin mining hardware market [1]

Bitcoin Mining - Jack Dorsey's Bitcoin mining machine is under development [1] Industry Focus - The industry is closely watching the development of new Bitcoin mining technologies [1]