Tether has released its open-source Wallet Development Kit (WDK), marking a significant step towards decentralized financial infrastructure that empowers both humans and autonomous machines. The WDK, introduced by CEO Paolo Ardoino on October 14th, positions Tether to fuel the development of trillions of self-custodial wallets across various blockchain ecosystems. This move follows a period of strong performance for Tether, which reported over $5 billion in profits during the first half of 2025. The WDK’s flexibility and its compatibility with multiple blockchains and assets position USDT as a multi-chain liquidity layer within numerous applications and autonomous systems.