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.

“Received good advice”

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 3248278454

Proof data

Record hash (SHA-256)

bba02f58a5e4f10a054dd4eccb465df5586139801d893cca4c212dfe54deb3ad

Signature (Ed25519, base64)

kFIa9hRGMalDnpCE/np1/JM+uNesGFWpt272MB+iFBZeX4/O0IvwQJ+AlYvWFeJAMDpcFrZiHOdkhreYhmgDDQ==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["bb99fbedcbecdb5a43a4f33fe44298149f7a5cd2adfb52d92c8a1adfc460ae21","65982e3e584634e517a3614216733f8e245cbf7b4025a0ed20d53f7930aeea93","c207f6f80c795079e7e0226c9d3ed73968209aa3bd827039e5e200433451693e","2bb11cf5bd4903c8b56d3f88d023f5d82278bbd2d94e956b0d0f1e84298098b8","0c2f730c4b97463a774fe21fec1f50a8a8f5824c3f5f4c6dc776ec83afc1753f","ff851399682c6f837577564b8efbd4c844e4338cd340d4fdc9afba46819273fe","18cb3a3cec9716742d468fcd644048bb29e560faaf66f5394592987b180bd41a","f88cbece94520ba3bc0900105ee58932dc003673df918a964b761b8ac9da12ff","3c53e75bed49ba527c016e66f59995facf9d5bfae513484c03da13d4f99acff5","a75f1c241fb5d2a78355490d5f64a9f7a9869645ddab36da78c3a032038d1f9c","347fce49394b6141bb1e4fe1f1289224acc23f3bdd6d97d335d36fdd9058c275","2cb3d03c4fa647655f06857f3e55faacfb812f8dc7c257aa10761d43e9fbe12c","a77d6603ea315a1a40198ffcbd12dd2bb735b43c4a160be5cdd17c50135fe05a"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"Received good advice","rating":5,"review_date":"2026-09-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (81db1abd6b6e…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.