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Checkpoint: The Ledger, Proven

advanced35 min readLesson 180 of 180

Two engines, byte-identical reports, and a restart that loses nothing.

Checkpoint: byte-identical, engine-independent

The proof: the same operations through the service over two different engines produce byte-identical reports — and a simulated restart replays history into identical state. Plus the deadline-bounded async report and the honest health line: the whole course, one artifact.