tanX (previously Brine Fi) is a decentralized, institutional-grade order‑book exchange platform that offers self‑custodial, low‑latency trading with zero‑gas, tight spreads, and cross‑chain support. It combines off‑chain order aggregation using zero‑knowledge proofs with robust, developer‑friendly APIs for seamless integration across networks like Ethereum, Polygon, Starknet, and Arbitrum.