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 3220562278

Proof data

Record hash (SHA-256): 3c4b0aaa940b00bdd104149d6046ec4f48d912f583a82d213963b8e779d42d97
Signature (Ed25519, base64): 4WwnvDco/odO7Cg2NPaHmVt3yX2WWHYJsB+gbDhAbX8ywYCbrCLKo3jo+rk3I9+jDmacJdRP8TAn1Z3OQVBKDQ==
Merkle root: 2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722
Merkle path: ["3c46a2dba5e2d63fe268cb84c18182b6fc3af277ab9581870cedec50591427f6","b8ba40b73f24c59356e9882fcaea20afb2a9eec7b53edcd8457d73184e13861a","f2ae62829c2fae28ad614e4e248bad925e2c02744c790bddb5d6e59f63103657","3f5253a27003bb9e5a5203f75c4a55fecf0a1385f42479ed495aa1014832acb3","b2e99e32049deded43d9ef046883e06a6e6c38a154ba3b66a611ff1b116e355b","34c3bc7540c25e553c0060c5c7eec2f60144409d32f6ddfbc4d8cb9aff591c03","d03840388f1ea4d94866e43541711ebb35a4fdb3a9c17d743bd699a532f0caab","788b95c9b0e38413c1747af705ddde616f21444c342f7fd0e199d7b168f8bba2","4530801c012e8f9b134a0ade552509012e3a7509eac3aa747fe034db39493901","3ee56db5c7cf2558157373a510c5877877472fe1232f87ea3e3e134165751d88","d4ef131d6fe76c7e3c9fee5b9f5833582f55867f24d8e48031a93ae7e61f974c","98b2364feb69697f9c170c6c8c253e875bd2ca5af1617759a81536a90cf6f664","c8e78357eabd343df2a6d1ad8a9c122f986bc772443ab896b1e0fa855f0ebd28","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…
Expected log hash: 13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","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 (2d214bb14438…), 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.