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.

“OMG! ICH LIEBE DIESE APP!”
Google Play · 5/5 · 2025-01-27

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 3220996539

Proof data

Record hash (SHA-256): 2a38d50f8440e430560eb0e0a314f4ea032b8aa679428989a7b16ed952b35620
Signature (Ed25519, base64): FvcjhZ27HTWIlYgRRasth9szGFpBLwJ5FtYbmGyG9sklHEg7kgj1GbAipKEl4irDAwYPLmcq8N56miUlx89jBA==
Merkle root: 1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22
Merkle path: ["2a2ca3d1dcfa165d9f5b3c7c71b7e924429d3367ac6fc50c7f04979ccb4a707e","d91150fd2c3a9a8a07b0905fc95de8fa15045a30b11d6b5a12e24d18137fe437","1dad2b850c9f027eb977574190a03c1d05df8e5e055e5f31a93470062875bea3","917c3b7a37bd5ebcfbf0b632332507a221850aff50aad21fd3c523d97cba3482","cc874b927e951e48820db2166af5d9af9c3f0fad70941dd6cad89e2ec2e1f7ee","a9cbb56cb99cc231b28e1cbfc4fd0747b8916d0bd28899fd62b758597a866b97","b575fe0fe2b9cf9daf8f318d4af79d3fa56d801b4309cd9dfefc2427bfebe58d","7d82766ddc09d62fb52b0360416faf9ab26aeb4c0cd363a2686cc9ee0a0a0972","4370211d49f9d019ed43c30148d811a8d3075d951401a6303840795e492858fb","77f9564bed074ac2d2d3ea6f6806c04368e442d5aa99fa94e3807e1b4a755a07","8501213cff22bdd65042463ffc599eb00a94c6bbc397e02df36434f1645a4b73","02a91e84dd419fb91142eb41d22148d6364f823a8ddb534904911b59b684dde2","bd64ca269edabfbd30efee623435236838862399942a0d08ad142d3df41d1142","8547750c311d384cbb1a945300d6b6fb4f4bd2b78af7177366b3baa4b4c1e724"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220996539 · entry 108e9186e8c5677add5d…
Expected log hash: 00694de1434e648cba57bf07fb439ed90ba501083441667555bcf619bf5edce8 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":"v1791779426071","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"OMG! ICH LIEBE DIESE APP!","rating":5,"review_date":"2025-01-27","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 (1b0b408c7cf6…), 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.