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.

“it will explain and help me memorize as well as understand it”
Google Play · 5/5 · 2026-08-20

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 3241084060

Proof data

Record hash (SHA-256): 4636915e14dfb46cc40d505c2e42d78da9d72dc3035833421acb7311f443c9ef
Signature (Ed25519, base64): k8bwhpcA//I393En/+VMzukPDYX6eUxa1J9QoM5di/OojwTMGqkvneyvngTRGAteZ1y3QYEKD++JK8dYD5J9Dw==
Merkle root: 0b0c0499033d3f9b3953d31e6c838f88f12988dba810dd4de44922e1b60fcdf6
Merkle path: ["4633983b8a34794ce4051d2a0295e679620feea1778678eed4c84572670990c7","bc0df003d6ac20e15044563b8b28ff69c25d6e780c7e763f078879cd72d6ac71","931ba3bc8559f1cd61fb01dd879a4832bc1f84bd3f581fedf0620bad29f66313","8f4cfa65ffeef2dd746728f27fb0e6da85ef448315b0b85944c98c4c40435ff8","58314795408409d89b3fb300441b45fe4ad6f8d49f316f5e5a9e5d358bc1a08b","898a8a73c2a5d4e74133c9dec8282c333324e29b99e99b5256fe45db5f394207","d816390fb8442c0e7aea77a19f5a23584ebd273ac6167d444ffe1d63de281448","b51d26883224d764c91739322a3950d71fffc6e5fc6cb0c76ac2ce450166de69","5999712a7d4d95f3eba597a6982f36ab6e032e30efcc5ff7f6f3d8f354c1383c","8369704f065cd92d83acadff530084cedc82ffc66761bdfb0773e404631137ec","7799f8c2e12ebebec2e803db59dc1771942abeef133b5e16abd4958aca8176b3","a2192486df88d4dc6da5dd9f9fe72a80fcb0210cda38213ab9466ef5ecabcb4f","fe7751fa4b9a0ad43fe0710628b6cb1b92e12eb8a60d9f17eb0c0764d693577a","8a05b9e19287b30c7fb54816a1fb848939f3f2c84b9825f19f342683d5db13aa"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241084060 · entry 108e9186e8c5677a3e82…
Expected log hash: a291e2473f1a4510a666e020d4d424e463d55bf4677b91eb5a52e446e5ff1581 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":"v1791865115768","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"it will explain and help me memorize as well as understand it","rating":5,"review_date":"2026-08-20","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 (0b0c0499033d…), 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.