Tether and the city of Lugano, Switzerland, announced the launch of Phase Ⅱ of Plan ₿ (2026–2030), with both parties investing up to 5 million Swiss Francs to promote digital infrastructure development and strengthen the city's digital sovereignty and technological autonomy. According to the plan, Phase Ⅱ will focus on five main areas, including infrastructure for digital asset and automation system management, building digital trade and commodity flow hubs, privacy-preserving digital identity systems, local AI and autonomous agent ecosystems, and distributed urban digital infrastructure development. Since the launch of Plan ₿ in 2022, over 400 merchants in Lugano have supported BTC, USD₮, and LVGA payments, and the city has launched digital bond issuance and pilot programs for encrypted payments of some municipal fees.