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.

“Das Signieren habe ich als neue Funktion ebenfalls entdeckt.”

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 2515144749

Proof data

Record hash (SHA-256)

7ff94ac9e0e1fcdc38f1b7580e90923771ce60a65ed24f2f476d2f3a4361e04e

Signature (Ed25519, base64)

UZCPvO4h+bYftVdhhIZonkwVtL/q/MP2kN+upBS12cD6QS2Q7DOaOk7JaJEq8xmy0xaKJttTAZZ7SsxSJKaKAA==

Merkle root

8a6ad893af0f0bb6c448016a777af61f3f4935afd82df0db132e64f813535715

Merkle path

["7ff6adeb35523d561373696de9c18def286ff4ad2fe82e3f917c781b30062972","91837f441fb12d698b9426e3a5ba527b37972e58cfe96ad6c1d94d6e47ff8111","79ad5f99156af213c53f5cc24efb3a28c257c1dbedea5c748b2ccd9c7661c418","0fb30dd760a5eca6e84e234e5ac5152e6028d292054ac6c0899b7c01ae279f7b","9d47e9a115c8ffb834e4d759b829f0d9d3869f6746562932eea2bafe44a53277","2e954e5dc031af1ef1eafdd9b0fc29604f86d316b75a3cb34ec0f7c6a07e7609","51cb3bba593cf7dd526b5c66c86b076e81dc1e1d5c9e478d279022a017c3848b","716d11965817e0acaed25c3395b96773d1919b23d53bacc325088e8a1ebc934e","7d198fa903f097969213b452b6b4146cc1df496e6588810d2383c87d2404f9dc","e3ca0fb1c13fa26698e8ebf0ea550351cfddf5ae1ec9ef34194f189414b94416","ddfc662d7a710cd09b89d3ff4aa9d006161e2017822e9496291323eb001ce42a","73f1a430980a35bacc0025104e62589b7f6711bf08b3ba132110caa28e1df671","5284fa1b0195183d338070f05d29e0d94229e3402263e30318e4f273240fdf18","95de144e054f717eac0f186a52d131e0ff4674147622cce8cff3d2611e7b6e99","8834edd87c11ce9424175f1744f71345038aee1c5b6f350a6f7bc2a49b63e8e9"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515144749 · entry 108e9186e8c5677a63b7…

Expected log hash

b6b79ad662332330e69c4ef135f6fb13ddc70048f846024d496aaa533f7f7fc0 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":"v1787137589246","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Das Signieren habe ich als neue Funktion ebenfalls entdeckt.","rating":5,"review_date":"2026-08-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (8a6ad893af0f…), 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.