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.

“the images don't paste properly onto the flashcards”
Google Play · 3/5 · 2026-06-02

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): dbb3f18b12a9f6918aaaf0890bea45e67de08e652cc1a071038d748226c33c33
Signature (Ed25519, base64): BgwcncyX2Ze6czKGYKMBYXZQ0tDVRDB8G2RALnarhoY46sK81TEubq1wA+fa05HHMkLv2bdVRaynvJ6g603DBw==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["dbb54daed90112b8d04ec03b16bb8dbd44eb8283c7ebb6e1f8a609b9927d2dcb","6afa7e198a3d207cb983686ec731f52de9669e8f003670aa68da54b9252865a0","3bc3331d821d86fb635ac33663df02f29e02f92984ff21353f5c54cce2b5d1a2","4e38272fb426992bf77acf6f8fbbf1ee75cda07616eb083c81e1965c3064d47b","52c236711728e9268f24d63c24d7757f2c6d289518b7f3ba9f76afdba5829253","4d9e94966779303312b14f590ff3f734c85578226d5e3dee6d2e0708f04c3fd0","d371f2fe626d60dccfdc6fcab1e1c8185b8b04cbd3c32acd20dccb4e3c699dde","631620c67373c7786a7759059ba381209e6f47312ac5372e17bc280e1914befe","0d2f607745db3a3d7696feee33a29b1f9b97e17600a7376d63375fbe1e4335ce","ed88d4e3a89ecaa852e7b20a1ee7f3a296bd3e57081ecddc2cd840a518ab70a2","85c3fbe89997c93f50bc23fa818bbf4bd3e224f003552f75980ca4b7480f0346","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","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":"theme:vaia/fit/en","quote":"the images don't paste properly onto the flashcards","rating":3,"review_date":"2026-06-02","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.