crossmem verify

Verify chunk integrity by re-hashing verbatim text against stored SHA-256 hashes.

Usage

crossmem verify [cite_key]

Argument	Description
`[cite_key]`	Optional. If provided, only verify chunks for this cite key. If omitted, verify all wiki entries.

Walks ~/crossmem/wiki/ for all .md files (or the one matching cite_key)
For each wiki entry with a cite_key in frontmatter:
- Extracts all  blocks
- Finds the text_sha256 in each chunk’s provenance YAML
- Re-computes SHA-256 from the verbatim quoted text (> ... lines)
- Reports any mismatches as “DRIFT”
Prints summary: total chunks checked, total drifts detected

Code	Meaning
0	All chunks verified, no drift
1	Error or drift detected

$ crossmem verify vaswani2017attention
[verify] Checking vaswani2017attention

Verified 47 chunks, 0 drift(s) detected.

$ crossmem verify
[verify] Checking vaswani2017attention
[verify] Checking lecun2015deep

Verified 93 chunks, 0 drift(s) detected.

When drift is detected:

DRIFT: vaswani2017attention chunk p4s32c1
  expected: 5f3e1c...
  actual:   a8b2d4...

Verified 47 chunks, 1 drift(s) detected.