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.

“Nun verlangt man von mir ein Abo.”

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 2514541190

Proof data

Record hash (SHA-256)

fe0fd14fe645df3df57dd85f114fd56decfca6083114ef9cd88b8f78770d0c9f

Signature (Ed25519, base64)

UOZGSOJKHAmZE+U0Yfshq4mSqP/rTB5OIc5pk3F48/7SqEBi+YWnjld1184iYLC6oO5dhdVRS+CWZ8rW4DvQBw==

Merkle root

6ddadcc7cc1bb0679f63a30d8a28a2a72e039950945f2d7276487dd5b703ff7b

Merkle path

["fe116983905d13e3576dc61d31c04c1a1944bd4930fc7af2b90e26209debc58b","a531d06a64115d2035a9096920e5417d3ecb6de283726ba86d57267578174393","acf6d75774728b98c52223e720015f4a051f00efd16aa26eb50dd8439ac17ac8","8172be03cc6d257b7dfb949a6a627c95b4d48d9d8570450ad8831d311ac3f72f","5e6a9f9db25752f9a6e4a83d902aad49fa641675458e33dbbf7ae25c410f42a2","464afdf63b6f5c265f5160c9e64ae1d1225c049e94e7bf5b5f2904d5331fd5a2","6e9b8118c0468c17715399ab743a2922c3dd8b85eb1c6a9137e2109390e63525","07461dc3333d181e49539d9a8f98bed2f303a7e4e9e33825d9d8962b00483d19","6b2a9163ec419602ab94ac025098a435e1e50221aa3bae432877381260217136","63b5a2af2d6abf80d744801e11830cf56d7a6d6adffc1984308a9c7999d7b176","366be40f9a826a1f9f414f5bd1dc69b8a5e86031f347bbb2fed9c67e1427e4de","b40ab33f2e52ed4a90d4b252b515f92c935ced18ec43a91b524f940a12678caa","1d83f6615db385673b65f8ebddbdf4ced98d2ea1acc79049e3086b75a832a99c"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514541190 · entry 108e9186e8c5677acb65…

Expected log hash

adca5adcd6d3235cf084bc9b408d3e4d7742d07347957346ff2629f37429bf20 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":"v1787130614827","kind":"published-quote","locale":"de","page":"brand:drawboard","quote":"Nun verlangt man von mir ein Abo.","rating":1,"review_date":"2026-07-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.drawboard.pdf","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 (6ddadcc7cc1b…), 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.