Public trust primitive — no API key required
Verify a Claim
Check any SHA-256 claim hash against the Quill claim store — no API key, no MCP, no account. Paste a hash and see the source, retrieval time, and license.
Claim hash
Paste a SHA-256 claim hash — with or without the
sha256: prefix.
Provenance
Where the claim came from, when it was retrieved, and under what license.
Reproduce the hash
Reproduce the SHA-256 yourself from the original data — if the hashes match, the record is intact.
🔍 How this works
Every Quill record is hashed with SHA-256 at ingestion time. The hash, source, retrieval time, and license are stored together. Paste any hash here and Quill tells you what it refers to — and gives you the exact shell command to reproduce the hash yourself from the original data.
⚙️ Also for machines
This page is a thin wrapper over a public endpoint. You can call it from any script, notebook, or newsroom pipeline without a key:
curl -s https://api.maplespike.ca/v1/claims/verify/sha256:<hash>
curl -s -X POST https://api.maplespike.ca/v1/claims/verify \
-H "Content-Type: application/json" \
-d '{"data": {...}, "sha256": "<hash>"}'
🧮 Verify your own data
Have the JSON a claim is based on, but not its hash? Recompute the SHA-256 right here and compare it to the claimed hash — the same primitive Quill tools use.