This chapter is an animated explainer of multi-family post-quantum signing — Dilithium-5 (ML-DSA, FIPS 204) and FALCON-512 (FN-DSA, FIPS 206 draft) sit on independent lattice problems. That protection is evidenced over time by HATS, which records and monitors that signing controls stay true. See also Quantum Threat · Fraud Prevention · H33-3-Key.