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.

“retaining important knowledge for longer”
Google Play · 5/5 · 2025-08-30

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): 6a3ef54cd646eee5c355fa3b9acd505e8853bdcfd8dae259cb5c52cad4c9b8d1
Signature (Ed25519, base64): P0TaZp0fMUYIZtNnQW47e0RvPZiUqMCOYga24LC2Mj2wxt0JwVjd89MH6FiwoY1H2KJwv8vKP3coNC919Uf+AA==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["6a407f4e87bd5e6cf36ff6b84affe9b53f8150a1cda1271dd0fe7a294a799036","212536d50cfc3777b99a15f184df0bda6249b3afbf07b934856d1f8f8db0d14d","4cfaf373f478f352843ae5c451147bec3539838b13d763b25583434ba6156d44","10910e36232f61e1259d8805a55fa12e22b7e02e7341d08fd0dfd485d9f67450","c136460b0e13db071efc20a21eabc0a62c5873150cdf97a3e8c356c59bff01e5","37c4ae0ffc10ace7fb6933b0f61e0cdbe7eb10df2331ffd4150f9083c7db63c2","2aa0e2d71f22776377e65dba47f9a86ef94d677f2aeb99d6add514d774a6b143","7184332bd5caedac8fe5a6906eb5f574fe708a588e5c0ab40f747d2396aa6ddd","e1a85bfcb1a32aff9670aac9375f97eae86d0cb206adc3141a5b0dffcdf0d1b9","489843fbf13bade3864db2315aea5f10e3bf841daa78ab414bb425b102864af2","5fe4503b3307f13de42c732826bc151cd940707824ee79beda6f9ffa1d08a4b4","5b1894dfcb750cb74de963040bda8c5d7aae8b006db7bf1f2400cd4c8a13bad1","2a2a0e0a04556444a1f3e56af70f8f7d735501b2d557278ab2ea5948d291f4ab","a445a39a48770a8fbc5d87a405ed660d401fa810eac6fbd1d284a96f8c7d5503","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":"retaining important knowledge for longer","rating":5,"review_date":"2025-08-30","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 (eee462924587…), 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.