IDDrop: Identity Drop and Acceptance Protocol

This document specifies IDDrop, an identity-transfer protocol for moving identity claims, actor claims, and receiver-bound claim bundles across human-facing and machine-facing environments. IDDrop defines two complementary operating modes: offer-first, intended for proximity and human-in-the-loop workflows, and request- first, intended for autonomous systems, daemon-to-daemon exchange, and policy-driven machine identity transfer. IDDrop does not treat filenames or user-visible extensions as identity truth. Instead, it binds identity transfer to sealed carrier truth, semantic classification, actor provenance, receiver targeting, and causal validation. This document profiles the generic TIBET TAT handoff model for trustworthy identity transfer.