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.

“For me, it's the perfect solution for learning, refreshing, and 'preserving' vocabulary.”
Google Play · 5/5 · 2026-09-14

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 3239939960

Proof data

Record hash (SHA-256): 4bd77b52a201bb247677316144b4d3a6b6cfbab30b8ec6bc435e6c096c7d6acd
Signature (Ed25519, base64): SI6+LukWyi0NCvNZc/a9kx2pjaMO6HYasygDTHGh/A/mrvTyVJVc64+3eYDBR/iPXf5Su7CdDoPs/tniFFWZCA==
Merkle root: 954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7
Merkle path: ["4bdb5e560b15072adf6b12bbdbf126a04ce4bc7e5434f89e4909eb08b9d676e4","8f1c77e5e03a07c4fb609838a9a9d62548fdae55e67e14bf4c9a0f13425840a3","ccea30a804edee213da21d33d1bf06ae2a0289b716872e76bad7f9d1dafb1c25","e0662fc5a9a34febb3e48299670bc194840f7917c5a937a2c113c677a455385e","15b39645463a7ad6cd6addfad94b4db2d576e3099b9a6cf8865b979c5f94c11f","d177a3a654e2edf8fe2a3348958470f9979e16976dd5d5d0e25206b8bf45fb3c","8f85018e85f311fa7b7b11d4ac8cc36d912cab40c04935cd1366e05d8523bdc9","bbf3d73257314bbc2056a462919baecf7a1c9b4dd5a4f20326a23a3ba3834aff","2c0bcf38d5a67acbf53aba0d6b34daee014e3894e7c50713edefa71dc22f7e7e","07c9c3ff2ad40a6a51b748f8a25173ba55a6aaf65a30e7972068693d1b77c76e","780157e889b8acc868bdc5fbd2b9f6d948cec0f255310afe76e4ec4bfc3a114a","37d889bdc912bd16145284899ed1544c934e2d5178cc362b2ba799bdeaadde22","07b2ba787804bc9fbb84c73bed76b7f65ff1b8c1694261a8264cf5f3209f315a","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…
Expected log hash: 28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"For me, it's the perfect solution for learning, refreshing, and 'preserving' vocabulary.","rating":5,"review_date":"2026-09-14","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 (954962254ff2…), 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.