The supplied post says the bottleneck is migrating a real blockchain, not simply swapping ECDSA or EdDSA for post-quantum signatures.
This local model does not inspect chains or implement cryptography. Use it to frame the inventory conversation.Migration is the real system.
Measure account coverage across chains and expose rollout risk. Signature replacement is one dependency inside a migration, not the whole plan.
Measure readiness
Coverage is migrated accounts divided by total accounts. Risk also reflects a zero-account inventory or a short rollout window.