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.

“if what you're looking for is to study and learn daily”
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 2904877428

Proof data

Record hash (SHA-256): f967a8f6560df7e1222f78e204b7f2a76cceed4e67d51f26c5dba0548ca157f0
Signature (Ed25519, base64): R2xcPVr8sEPBdOIN3KM39T83NYPqIbzwRzY8bZx3BeOrIiGd5yd7oDdIMvyPJ9LXlvlIZ35LTZZZfbJFTrhLBQ==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["f96135cdbcc65a05ae186c27da512082cac05999b39ba8c9ed6316e9ffbe62b5","b83d006dadb87ac1056176cf1641ba0eb5109f3517e82aaf78d338bf5cfddc25","097ac9608199d5d7d9f31793f8f52dbea66e69a4e86df09c0e52d6ad983a79d4","19a53db9ad4d5c2a63af98e030cabf589746f535d177ddf55cb58fad4b8fd4a2","75e602f0855be29a954bb0c411fc95b45d840e83c26ebda5edb0342bae07db46","7773f85634180b0ce0ae2a1203970ebba67b38c7629877c55f5e01cfd42d3565","79d87aeaae9c0de687afd8204aa7e82069cc41bf68bcba8f72a164131d543bbf","98536527e19d5bba296c1d560726d17bc2969c867b3d188d90d597dd4d744f8b","801f0519dc58367d6c56a35285904944ee3097971420345fdbfff12766a8fa55","810c2b483236c5da900ac0ee9beef62cec7dbd9d526189df63678c5b7243b882","a3cd6a309f10748c6992d7d249a79b7e2e2669fa48a49dd673039acab527d8fa","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored: 2026-09-21
Public log entry: search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash: d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"if what you're looking for is to study and learn daily","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 (e299bf38720a…), 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.