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 helps a lot with memorization”
Google Play · 5/5 · 2026-09-16

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 3198225546

Proof data

Record hash (SHA-256): 436e547ca1008584cf01bddd03b6c275c8e96b7255f8eebe6aad87ddbc56188d
Signature (Ed25519, base64): QBBIK9HIuTVA2iTzhPVI6fZ3h48A1E0UbHFtgJFele0LdacICFIhnu2JxIoS9GBvIJMjwDItAZuWFlNGIpKBAw==
Merkle root: 12764493a64961d0e0d426bbec64b837c2e35bc22a58920afcc56db07df6e8c9
Merkle path: ["436d878e35ad2756cf6976c6a313f3d9153cd3173cf3a129db6bc680163508ae","9f165f6bf327f68982e455127878902dd64afd28e3f0d8057f3401526bc96fe3","01573aef58fabed2f3f564773e60ac9562225604506c5055765f065e3355a908","11c5c7b491d428145b54cea98243ba2bb1af81de3df79f2c0782b390e121dca4","d22549c088e627821321d8abb4322957485d354860147a66c0543a963388a673","53153fc6d44ae00a6cf0096492d5c58138aed29576befb074506635be2731d9c","129d8e703838792b083bf587dee32811d01c7f4a3d051f9a34722b609b758ee0","ef810efa75b10a0c790c4a1ea349b3dc14a3031d293365ec7aaf724cfaa38d70","ba68d40fc84e3f7915c06e01b06c1674f51c19ffb80915fa60208b3a24fa2e22","8618805f46975f33a7b6b1f0cc662e5e7456777e73da1494d677103a60b649c2","bc3cb2933714b12bc7eeec18228156d857cf40e24ca1251b33bd7759c6b49da0","cb60c983334a0a783c3451d8a568d777b700e15522ac276537e889caa604231b","0a6744044d43ce91eeece8e7a40b34c6faf131deafcec67ce79a193702d62650","bf01790763bd70681430a2841b8504c59b88918b5b88c9d70f6ee7041d7ca6c8"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198225546 · entry 108e9186e8c5677a10cb…
Expected log hash: a11b46fc63b94f32c49058752856fbdc4e92f7a41d4e67238e3563657fcd50e4 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":"v1791685609571","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"It helps a lot with memorization","rating":5,"review_date":"2026-09-16","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 (12764493a649…), 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.