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.

“My answers are marked wrong too often.”
Google Play · 3/5 · 2026-09-15

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 3241341297

Proof data

Record hash (SHA-256): 3095996b342ed12ce1b10942e4f4d49cb7da96080c69252fe3257325c4040c09
Signature (Ed25519, base64): 0WnNHA7guKIl3UpcIJTyYMxZ+w3xVOr3kqNExfYW7D/3Adf07kDyUoygVBFPE24eG4fyZyKwwPWmvo+0nmQgCw==
Merkle root: 4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265
Merkle path: ["309f5a7d32463cc8c3953bd42281d4e86e7bc7ccdc2a9529e43922d9f26ccbcd","1f79afcb75db9776821d4c70be7d7d9819fcc20712c09df7a77705c38dd36a26","6b8266ae2f977c6fd18f8def057a63d95e03ce80190e26625f27b62d547ee6b6","585668e5047f11854f38f0ef15bba9e0bed3981c7cb0cacd60915b63a950f013","f8fdbbb5fccc0ca9dc8841536d545b44f878179bb520593a99c139be9e374fe6","ff6b4ec2872d4c0d26f14623f4a9b8d1d470bf9135c4e4927636f1955eaeb385","74b33ab737a9b4693fae0b1bd95223a6e0f52693da58e6782fe0647a2f92baee","1c62eccdc4a5e9bf82dba58e6ad3a1bcd7150ad9dcfab582a32534ab092d222a","afad2a59532283c879fd2b5917f6617c13cdf8f7981404b890698209e0363980","c3d8da89cbffc4527d4195997f3292a281668dbc65b8c89ce61b82b9c82ad6ab","a3b74b17f9cd5d406e0b7770993216956a787a080b4312b3087d7ebb01d83d77","1a39eb8110f60cca7b5d74c4b4e1ee494aba4bfcd1f4082136542cd2a427ac26","acc667d852c71a0e84a086ab20f7bbad3d8ae083a1e44cd20501ad641f662bdf","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…
Expected log hash: 39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"My answers are marked wrong too often.","rating":3,"review_date":"2026-09-15","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 (4900b1080bdc…), 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.