Bitcoin fell to $66,500, down 23% from the October peak, in this week's cryptocurrency roundup. Total cryptocurrency market capitalization contracted from nearly $3 trillion to $2.3 trillion. Dogecoin's 2026 roadmap proposes expanding into decentralized finance, prediction markets and gaming through DogeOS. Investor Kevin O'Leary argued that the CLARITY Act and additional regulatory guidance are necessary before more companies commit to digital-asset infrastructure.