Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“I think Zasta is very good.”
Google Play · 5/5 · 2026-09-02

Checks (re-run on this request)

✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
✓ Public transparency log — Sigstore Rekor log index 3124210377

Proof data

Record hash (SHA-256): b4c6d2c3e2e1c7a326f4ef6045265e603e65bd5e527aa19f75a43143e352c9fa
Signature (Ed25519, base64): pNLSai9F0YIaLBF9VVW/obVNwg7lvI3rIr8xgcL3l3EpVmOfVk1Af0rlxHMJGZJlFEcGDeVIPt+4GCBgILylDg==
Merkle root: 3b820b0e91b2475ca02a79fe65f1dcaac35af570ee21f4c868099b9c17e17c1f
Merkle path: ["b4c7c0f00a22058a51f36d718b1057d61a836e8fe0fd7a2dd67d31b2c60141d9","a248ce9eb6910b7ca5c55fa766de44d4a2c999f66ca4b4c32ba5e172731f2a19","a039b1c35e38938547d8aa7ae2b3ddf4a489e3740c95d109b5bb4f77318b7f92","ed71f563825993615c4bace751b59f4c07a0526c0adfdd0668c9cc68a153a3a8","97ace265cf322b8f25295f7b0bbce0b074d8175cb6fbcf573bc5775457600442","753e1bdb0595f7b7523087b0f77f210e0dd05a91ae39c1781a4533dcef4db088","44a45b58e57384b1c99f8c7883755db4766e08b5ae20a694f7f197a67084a774","4e20830a8470dd41546c3e8b6ac11f207733b1ea760f6b2f0c6f6773664e5da8","2a5de52a659ce9cdd6d2a32f507080c112e5254ca580827251c7758d6b14fa65","3d4c41a47961944a3b832da6cc952b9be71bb28115e2e72ddc62eab25de898fb","a6ca92c89147aebe3053438f80981c1958433d9d49b1c71268b006e20f470936","79c527d76472954c74529d3dddd508bb5300f00baa6ce66cf581cfdaf986570e","83db60ef01b99a503ccd6a6abdd52daa1b692b73cf5b978606f8d217f799000c","00a544d427d2b0ef6286f24c44cfcf3a5f82bad04bf6442e459c003cb18785c1","10553711bf6721bc3fa0f227ed3bf669673b7af202d9c22d19db8987b7ed8714"]
Anchored: 2026-10-07
Public log entry: search.sigstore.dev, log index 3124210377 · entry 108e9186e8c5677a0172…
Expected log hash: 20a5241ced0c7b94303a7b8002f1aae217df3f1371aea54ff5745a148bddda47 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.
Canonical record: {"dataset_version":"v1791349684588","kind":"published-quote","locale":"en","page":"subtheme:zasta/service/misleading-ads/en","quote":"I think Zasta is very good.","rating":5,"review_date":"2026-09-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (3b820b0e91b2…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.