Migrate post-quantum as a sequence, not a scramble: inventory every use of cryptography, prioritise long-lived records, sign new records with FIPS 204 or 205, run hybrid across the transition, build crypto-agility with algorithm identifiers, then move sensitive records into a sovereign air-gapped ledger.Originally published at https://mickai.co.uk/articles/post-quantum-migration-a-cio-sequence-from-inventory-to-air-gap. Mickai is a Sovereign Intelligence Operating System; the Open Audit Record signs every artificial intelligence action before it executes, post-quantum and offline-verifiable. 104 filed UK patent applications, Mickai LTD (Companies House 17166618).
Micky Irons (Sun,) studied this question.