TIBET TAT: Touch-and-Transfer Protocol

This document specifies TIBET TAT, a Touch-and-Transfer protocol for moving sealed continuity-bearing objects across proximity, relay, and local-network handoff lanes. TAT defines a consent-bound handoff model, a seed exchange for tunnel establishment, encrypted chunk streaming, and mutual transfer anchoring between sender and receiver. TAT does not define identity truth, semantic class, or sealed object class by itself. Instead, it defines the wire and handoff layer that carries such objects once sender and receiver have agreed to transfer. TAT is intended to sit between the Continuity Envelope Protocol (CEP) and higher-level application profiles such as IDDrop.