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.

“Love the notes option & the subsets option& how you can paste images.”
Google Play · 4/5 · 2026-04-08

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): 60f3c6a41899db1c0d81b669cade4c3134d816b5d660d93062e1f4ed179b129c
Signature (Ed25519, base64): UfJ4ZOkFBjjiCUXXtqAGyWaCMgL5MLmOQpune6SH5OAwMoqbvsXMMq1hyCMidOrOT9VmS+wb0SMZCHfibBNZBw==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["60f425bad314d759ab0784e2b55a3d7665e41b6f18f99f4e83eb73000ffc26ca","1868ecb79569320b7ea3e09066fd4bb850fbbfe1b1d2271e2594e896758fc613","fb5919e34da3f1d0d7507ecc3f9940022f7e15bf8a31b9e5029a129f044b101c","f351109222a2ce89361b07ce7403fb1cd5b48f0cffd988b274b503209329826e","6a7e7f2886ea30e05c069315ad5057af90a58de49c975cb77c1191c2169047c8","d4402399c919d6d1efc17991c05e11063611205b5d81be17822c2219733e8d4d","cf471459c574d8a883f6751038cc446775f96935d5f81025e5f3d15e0de68ee5","715036a31f4079fb343d90a93f4d18a1f9278f4eb18ceff45bd6c985c4f17bdd","a209b22a20a3e6fcbc21220883267285f88db93145bb13520a5ffe5cef5d8007","b46cdd3eb502ea8d701c296271c408a8575a2b16828af47f917816215f47d9c5","17971a4c5f04b7879efb1439cdb9cfeb95d5979aa2126db67295ad88a283fb0b","f66e3f0908cccdfd396cb0e5dcc96f2570e4fe1056c45eec7a7025dce074a563","ac995c9ae640659c6b258d62d0cad1933912ca122fd33d27f90560dfd3199a84","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
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/ordering/en","quote":"Love the notes option & the subsets option& how you can paste images.","rating":4,"review_date":"2026-04-08","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.