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 helps you to prepare for exams in a Short time”
Google Play · 5/5 · 2026-07-14

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 3178600936

Proof data

Record hash (SHA-256): 418cbd6246059a1aef81e4c84853c38aab2dfae76219841f55de63e990ecc82f
Signature (Ed25519, base64): PdB4KS0vHsmHA4/Wo6x2E0GrNUM8a5iYjh6Dp0kb8jGM9lYESOFCrtF/CmCbwEUnQjCwyO0swDwcehIpTSU3Dw==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["418bcae07ecfc53a8b77183e32553692d4ab1e716d2c15caffd4fd05b5c9a587","4e87af78c5e7a5a23bfa4f2b432cc1a548bbf42b59da3a1263538e324e082e82","30f1558647d2d9f88fdb9b1caa0fc833d72f4da4c0fb26e4cf60def5bfd98bb1","ee2613ff156d7d6b01f1b46db5403bf1071983c0c8d8d54b65f8e3c82075848b","3abe2358583c12b8602ca6f22fa36fb91f715591cd0a333e0ef136ea45d821e6","c2be0fdd46599251ab2e52b30071c99f508caf6a400b18441570e045c8de3f6c","4f4168de49f0ece1251b2f4902458055e03f4744c4e03865ad3ce3c5cdae50fe","29734cf543d1f0f86641fa1cd4ed5c0812181ddbd4b9c9196fb37c31e6312697","c3841b5d02f11cc240e314ee8d45b4be9411fb56af50fda48ab4bbc08a36bca3","8fda3be3b6bc59b96d786a8ab859e19c57d34b4a4d6e10717c5558be5a72653e","ff83f8d8a8477f71deed2d6b12135eab9bf1d2cd53770c44a491f2a5b01187a9","4379fefad16ae8ff2ba5706e6ae4b477d1b2ce3cfd6e873ab8243a37cd5eee04","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":"It helps you to prepare for exams in a Short time","rating":5,"review_date":"2026-07-14","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 (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.