# Evidence ledger

`observations/<sha256>.json` contains immutable envelopes created by the CLI.
Each envelope stores a validated record and SHA-256 of its canonical JSON.
Source content is represented by its own hash; retain source artifacts separately
where permitted. Hashes provide integrity, not truth. Corrections are new records
with `supersedes` pointing to the prior observation ID, leaving history intact.

No model scores or prices from the explorations have been accepted as observations.
Synthetic fixtures live in `examples/` and are used only in temporary demo storage.