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.

“Have recommended to all my friends and share study sets with them.”

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 3178600936

Proof data

Record hash (SHA-256)

f1ca06a08cddb943f43966ef75553e40731f95ad134b413179c978b309e1d510

Signature (Ed25519, base64)

RRYUC6uye1s8Ed78v0ozYCcLGyZFvCGbdefGG7hW/gAfIFSFxs3chReqEojUt2TNq8mgYkXBFr44cgC/RCBEAw==

Merkle root

eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6

Merkle path

["f1c4bc20fb237f4be3316aa2fe677bcdf37e19f0af6fb8e5a7df57add266e30d","1c31c1375454a5e3e024f01e2d0b9d1502c7b92bc938fd89e3f3d3ec48ec44b5","8139d28cc77551855a695c6397601ef043f8e3a31b1d8157bd7f9c17112fe693","8d9e8aa8086ab371fb21f705225af8a5736124d261f453b37595eff211476e79","b30d5396a912ded001b648cc93bfe07179072914e69f5066fdd79d124f841f8c","f40bbb1144e3b4b089f2302df7d26b57a442cb93cf2ce959ef3661353f71a245","6488623ec2bcf14854b29676cefc682a39b9ce6ec23ebfba64ccfb7ed7c7d6a6","54bc8093d5fbe17ee703652022ad2187c1c694ff1dc596fa3fc5c7dd00db5f06","5b6ef96deb1534bf092cfa166aa7eaaeb3f84efc8b2acee72fbe81ef17c3ab69","d5d913c7e49f2cf2fdd1cfd733de44d70fbbcb8ab11047db3f7a08ba33e1b96f","cea196a0456aaae014c4f370d5e890d1176ed384e370889521acc227f8bec42d","66c0144df3633ad66c2f179ebef927e19b0535a6e6b53bf383335be6325b032c","d7feb064a92044c8859079140f59232505ed2b3b8917786204b22dedaf037269","f5776b4aea049b369136550a2eba5c5f94aeaa8e5ccb2b2ad336fc6ccf74ea7d","452f4fcbca19997a15e6a6869c50e026ff02cb90a6ef21da106ee0457e55941a"]

Anchored

2026-10-10

Public log entry

search.sigstore.dev, log index 3178600936 · entry 108e9186e8c5677a6a91…

Expected log hash

f3dccf508afcb5e89d56dabc8c5aead85de215b1b896d057d463ea1c1bdb13a3 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":"v1791606586319","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"Have recommended to all my friends and share study sets with them.","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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (eee462924587…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.