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.

“It is super easy to use.”
Google Play · 5/5 · 2026-04-05

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 3247835674

Proof data

Record hash (SHA-256): 4169652ea7ba2d03f9eb050c9c97e3b489e612b2cd0a46d62344ec6fe46cc497
Signature (Ed25519, base64): ZEU5hHFd+waazb1FR/oSPARtllIvnD252yLRxGjKVaFhc+glzFIadKZr0+YmjwjAU8O8xcp82E5ASeA3dC4xDA==
Merkle root: 8af5f2f3f65c47a75dcdddbf363e3e76b22d37f4e953d150fcfa3e84bb04dba5
Merkle path: ["4170c0748f50a89799a340ed5d13f251ddfec89cf40c11acef46cbf6fbc46c43","9e420701d0e73fe1be33ff978df94544025785a4803b38d1aadbb99cde55504e","7e042dbca771b6577b6fd1efd05ea1e8f36bd98e6a945d1acc6057df6e599999","f798c8577144e416f8e7ed5b152af359899c2eab5ed70244aa8c762ad2d41e3f","a11d9eb11098350d449a63d4feaa326f8f71bbf674ba3f19fe135dd346143e23","c0bc669d6f192e66abf511983498e82054681e829f215693cd68410c2db1fc5a","b07e4c9a4d735615d5053b9c722aaa5f9f08bbccc0a5737efa0c9ba302452c43","9baeaa37163e0d630b03ac66d4f0b6c31cae05bad7d63c9faa72d4bcc4151bef","3e3a0ed143887cd81780202e309390a905207d7b6c61b99559cee66796c14796","fabceb1a8709728edf48f9519ce09779d16e9b0581731bd09056b73ea092aa51","f85dfdd2ab86046e8846d1cf4a09b7f25f7362e1cbbb39e975af34e4c92fc761","655d3cb3e6f23a95a7bcfab67fbd3f535bbc0ce71a1ebce283b6fa005ab8af3e","2df4d836b73633f71fa96faafac3d9d32f00951d180b99885afa9511763f7b1f","2212eb5ff51e97198ac2cd6542275dfcf712b9be9a8fab294a9bf844689bcee1"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3247835674 · entry 108e9186e8c5677afded…
Expected log hash: 306cff230c51a4aeee6711c8f2603eb2af6985e8dc9f5dc959efafe3398b8caf 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":"v1791944613264","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"It is super easy to use.","rating":5,"review_date":"2026-04-05","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 (8af5f2f3f65c…), 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.