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 set it so I don't get open-ended questions. It works for the various modules, but not for the module final exam.”
Google Play · 1/5 · 2026-09-09

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 2907673729

Proof data

Record hash (SHA-256): 93290e00db472e7b6a6b8608d62319d199b5ddf743eef012f9d529c6c9bb1bbe
Signature (Ed25519, base64): JL0JPN9+BVlp3sI9r5YIxZ8XIFumAilTm1yrvDa/9kJ9UQiPMJ/sCd4geKoWHOzdwG3CB9BdKaNkfCcl0I8RDA==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["93286725fcad7e11ed63e8982874238116ee80852191c6eae25665000572e299","89954dc74a8f28ac25231247a0cd0ea25b11265e018cdaad70feec903f5da635","5f57595880dfb9107000720256a0478663774a887e0dfc6e11b0c2061091fab6","e2bd347580fdd7cc4fba1a65d9ac22f2b327fb089f2274527844c6af858ea451","2f5a652453d2d0f197c55f2b9206a7580417975daa0f7318de3d95e98d39341d","f7456cfe0fead68967749959be0e9769c16ac60dc2ab2063f7e846b379df104e","16fda37587c07229d1101aacd6a910ba64d5a968f0121953544a368d4b0b830e","071af943ceee3fc6d6d967845028e984a58b6efbabadb79a68759f46bc4f06db","e71173fb30b4860618cf8c89cdd45d4a25efc76d2062268eee115dc2cad5122b","d285106698d21cc7e49a517bc9f384365ac996c488c66c985df813e3877a7de4","bf77cba02c08849fc4a9dd414e0e15c17e1f6b56a0b9c25793199682cc31bfad","86f8c9575acc759d5eac58ad776858ebdacefb73351960cc2bdae6ffdcc2483e","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/service/en","quote":"I set it so I don't get open-ended questions. It works for the various modules, but not for the module final exam.","rating":1,"review_date":"2026-09-09","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 (b9a08f9d6d76…), 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.