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.

“Besonders enttäuschend ist der Umgang mit dem Thema Datenschutz:”

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)

4b4fadf37e2ad93e6242354695e1453534c4e538051db092724ea4d1f6777968

Signature (Ed25519, base64)

+nIpiiu2P3DdAEKzhISIx0HjEG2aNztm7JWyfz0fFhGDk9OfK5yk24dcCvUbbF4ktV46o5tqYEtLv9GFroX3Cg==

Merkle root

2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722

Merkle path

["4b52cbb75a1e0107836e3b49d0f401e883c87f7afdb71cf30a307f609312074e","9cd99bb2b39e0aeacc27e828e498086c15e3156d5a25a5f74888bd3a40fc3d3e","119964cfd9522c8c6b595dc2031366af12e83d4f66496e3e8011d20040cda01b","407722f16c22e1250bb724a09866c0af0a2d2bf70e7eb3151a2f6c8b6424a563","5752e757c4a697cdf6bf6f50bd823123fced5c089eea8fd1bc666b1b98a91a34","aa35fbe9b3ac5661d7f058590a32656e966ac201c97529d266f533d757f69449","cd1d73aab680150221bea1f01aa9c39fa11f24bb1ea3c47f2779ca4cb3315f9b","6ac411b4c5fcfb08190e6df5189635b5f3ba247c72c0a1f496665eb52492f998","ab9a66348abcee7d68f1ca6ce966d707b7c50800cb2003a8506b5cfc342bb0ff","f375438932e0fdecac642aa00a1d0e39d19ad3cca6762436d2db1fb344d7fc7c","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":"Besonders enttäuschend ist der Umgang mit dem Thema Datenschutz:","rating":1,"review_date":"2026-08-30","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 (2d214bb14438…), 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.