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.

“very good pdf scanner”
Google Play · 5/5 · 2026-08-01

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 3273402563

Proof data

Record hash (SHA-256): 130ad5f84df86e64b1209b83e2834f27bcd85fff2626d8029ee975e75d603bd5
Signature (Ed25519, base64): FrUbGwXn3GqBj2mMeh8AKln8d6yuKF56twkMFH4y/LtkWdsjEGBsSP0paL+aE5wNV5IwgWj9iSjlXGr9uIJ8BA==
Merkle root: f157206eaf0681e32c282b6c87b482d5b05edc0371242c4555dfe07a805d46ee
Merkle path: ["130cbbd097953380d4d8bf3bb58bb54b582f3dd0505ee7a05f206624c0f1728f","edbef01ce2ddbf59e3262a8e221271ed351f8d6ddada8aa9fbb577e10e0fa9c7","38a90b69e0505e4a1ddf46c94f3d88cbdd47e1d1b9d4fd4fccdb04b76502ea15","cc1f114086a9a16784131c00b08c7cb2e88fd43657ea3e784107738f9f56913e","48ce941f0b1926b96d6dfbd78e98ea7d255e3582c197adaad12984afc72a8035","c14302e61fcb8481f285f275f5f3b0d20eefab7804812dc1e2bd0adebb601365","13d34707e4e6ff7b21017d216bcb5450a294b6ba2b067c685f0ae2efe53b0d98","248b592627981eddeb0a901146f4946fbcd464383a93ba49fadd21ba01991c04","6d035fae613fa0f0b07b1f688e5b49a6035bb9c3ca479a67a486c7d016aa7e3e","c2d4d9f0451cf088ca10a5190ade587a7e1e05ab40aed7b9236da6ed97b4dc66","9c625a75a9274c71647d761c2cd9f5bf940d702ef86f2a79f09f19f7e4637b11","c983079c81f3fe3701fa74b1f3d07ba4ae521d2aa67e53391f4fd7e312ac9423","18d3f68accc8835a5c40f0c374bff5769347a644756ac8ed830a1459ec4a0187","72cec015fa128b419dcf741d3ca687936e9595c259ab78dfd4256d8340270e61"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3273402563 · entry 108e9186e8c5677a6df5…
Expected log hash: d39be9954db9139b182dabecbcfa2b9510337ba2b23ae56a3f9ebed18578385c 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":"v1792122859337","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"very good pdf scanner","rating":5,"review_date":"2026-08-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (f157206eaf06…), 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.