> cryptographically-authenticated massively-replicated virtual data structure that's oblivious about, and robust against all sorts of failure in, the exact systems, languages, update-paths, etc used to keep it in sync or implement any one user's view. All that pilots need to know is: "I have a full local copy, signed by the right update-authorities, as of roughly-now."
You've solved one problem and created several more problems.
Crypto-authenticated update & replication works really, really well nowadays. Lots of open-source support, extensive testing, proven track records even in adversarial deployments.
Especially for a simple log-like system, with a limited number of permissioned authorities.
You've solved one problem and created several more problems.