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 just downloaded the app.”
Google Play · 5/5 · 2026-03-29

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): 226d70d260d3f5a7614f0e34268e5ed88cf9cb687c4b0fc501f3bde9e4707df0
Signature (Ed25519, base64): m65YJa94zn/0DduuEUgwqmE7sQb6TR/MsrOoWEjNF6iGbK+uTgPVNcEuncyKpsscRWz7evRhubnjSXV+NLwyCg==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["2265c0b80516e48acd9bb1398dd6efaa93637b85e1b58dfacfc087209d9b82be","29b0fbd08b6468e09dae37114e7ef342e821a4bac3e1810a3c91747b4bc97c3e","1b5fbc0ca64a286b8282a3845261f796f9a0836632a524b22d13f518f52e6e21","3689fd7db929a2a7c08e311fe1cf4c053a13d6379be6779c4d4d6a7fb710fc13","b529544fe0f870115f75b1f79f7025edd1bd0e020dd03fb3d5bcc30a4da7ed7c","bf753bd91a48c069f562b1d6bb3a660c16509c5bb1cf18bdad8384fc24fe7048","45509277fd50e57a03a459382e15031cd10354b320948889dcd6e7aa8915930f","29225009167cfe480b72768663b480841710da78438fa6a5c8267dc529f0dece","15e7eb0ad9b30622944db6254e1c032492875c8f13c45493d986e9ee65a0ca6f","af13f2fe41fdb8e2eb8dd9859b885ade04f53f600c200569d07c59de5b1599c8","f0d849fe2b2b2e8ac46eb31ce8ef0940645609e0ab080116168fd866668ba7ee","0f8ab31a8b7f9aa6ba4ff019c72fbe9792e5837d40b3bad40ea1cfb0cc79e40a","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]
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:vaia","quote":"I just downloaded the app.","rating":5,"review_date":"2026-03-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (81db1abd6b6e…), 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.