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.

“Ich nutze die App seit <3 Jahren einigermaßen regelmäßig.”
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): 53f1a5720bd209c54e0d3d1049161f028e140013bfcd0e1e8972d9e5d0c33d62
Signature (Ed25519, base64): 3bXJzrSINvjMNMJWcB9C5CaTLdPo6wMo55vWVkVkgY6SUfbULwYrprd3C0nLbb/fdd3LGzTMWrvCoZN1r9YRDw==
Merkle root: 2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722
Merkle path: ["53eab79bb113963b77b690a3ecdaf6969fc297294cafe6bd797bd6ac053f1da9","eeb32d3ef3fb0e2dbbda0ae54edc656816f1ffc068425f0819e7ef10e514d3dc","7f1a937b7749fd513dd68d322322eed846d75ea4c17b8bda28fd02bbe6935155","9049d5a6766bc7c99700ee52188b17c31392425c1da45a9cd599eb03d3600690","d76d5970870ad37b8512ad262da4f13b46f6ddf4dd19baa35fc78c64d1204488","75f0dfb58d6f41a88b3c4e8f747b93196e49b0e51641d908abc4c580190ed6c6","c3a9e4131c3f57596769e6f309e2632ce81bfa6f11aaf70de70d76866ad8f73b","b73142656336a715652543d4b31d11a487f09d61a5fce380b4a07d6d52163656","a0aabc2a413997a3df0a8f071aa546d7ec1c0c0e00674b90008e3d9fe310439a","5a7e4e1a963dbccd6dd1255a198cef96d5695bc0e8e7231eff36c8b88b0ff339","99018faa5ad0d28664cdf895a0d291f9e9325e68283ffe73dba89bb27fc962ba","23123a46a6d30e0fa59a691fbe1dcdcf32ad32c111bb8e37438ac91b1152017e","184cc1e2f93da59337f7837161587a67303bd364329773d15b922bec0848e3b3","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":"de","page":"brand:vaia","quote":"Ich nutze die App seit <3 Jahren einigermaßen regelmäßig.","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.