Tether is a fintech firm based in British Virgin Islands that tether issues usdt, the world's largest stablecoin by market capitalization and daily trading volume. usdt operates across multiple blockchains and is widely used for crypto trading, cross-border payments, and as a settlement layer for digital asset transactions. They serve clients in Global. Tether is listed on The Token Playbook's vetted provider registry at thetokenplaybook.com/registry/tether.