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 have been using the app somewhat regularly for <3 years.”
Google Play · 5/5 · 2026-09-14

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 3273209361

Proof data

Record hash (SHA-256): 2c4c1b357f6305d8a35b4921596ec0341b6c410e1188a2cf0b1ebcc924b14434
Signature (Ed25519, base64): 8aRgamzWR2clf2gSd/s26o+9QgCEwAJA5HiIdqvcWkLKHqjFT/ND2bW9CGYyvIGbh62kTBEiyMG+fYddQsDrBg==
Merkle root: 6ebb2d3fb78e4a08533ac6b6852f3c84687141ae9b0e78424d88bb4161267bbd
Merkle path: ["2c458b8d3924d3201cf0aedf893d75cdcc123aa537d373b6df48a483a2d45098","2b54225dc8dcdcbd0c3f3a4c19b6db884ed259d5e7fa014f0014f3880ff429f6","d8c224b3cbd0570bea3972986ea47c1d833dfae219a644fad775b534f7f8d1ff","b37192d8f9580726e6d89fde3064157519082a49fd7f9b3b9b465f7592f89912","4e78cdffff8a3b5324c0c3029b421107530f7c262f02a561cc72c11783c7ac31","d1d6140984e43cd904bf57b25db3c068d188fc26a11a58c6a4bd55b868c31bde","5e224b6c759e4819c7d48e8943bda080948a584503bbddcf4ff37bd1f9e8e495","dadd45f2895eccb6ffbde129c446b83f81357d825f84e1146c45a5079a98ab7a","e2d854bc33b167b6a62c47feed748d537f6bc620008717df2fb8747a4e190a8e","92dad562c0ae81efb9c22cb4a0c96d5566ac3900bee0a61ed1b3c342720c0f16","c6505d62fd1f18a4c80c5faa97487c91b8a68d4c0c27d65e4983982245aadb62","fc73c2b0627636c8f676f008d05fbbd4dcfb7ee0af08432d0bea252601b2007e","b2809ea8af334e57adb596cf07ef2c411ca41ee72761a0ae0fbef01d75a71a23","32d6dd564d479cc6b7834d44d5078d8ebc72c40210e72f0d380fac04d2d8e87d"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3273209361 · entry 108e9186e8c5677a732b…
Expected log hash: bdbef22d23477d2ccfe2ed182ce8ec54934b3bae489c9913db850af171e33062 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":"v1792121074379","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I have been using the app somewhat regularly for <3 years.","rating":5,"review_date":"2026-09-14","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 (6ebb2d3fb78e…), 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.