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.

“Leider fehlen mir hier jede Menge Zeitschriften”

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 2631896876

Proof data

Record hash (SHA-256)

39dcf5351f469b6dfd567ca5e8d11fb6ef82c73babbd7a9d362f611ae71a3f18

Signature (Ed25519, base64)

ffKlHwU+3cLqierCWgDKUVFpFnNV7TgaHxN+fW150lT7ZIx9zzT9+YapoyEbBj9nx5LKjYYGnBYFH/q/RCOeDQ==

Merkle root

4553ceda64e0f7e200f881e3be80f06ad7ad366bd41ae2637340e201b97fd992

Merkle path

["39d92f7f252cd4a36cb248f3959fc6fff3d934768755f374094f0bfd163684d1","332d6a18e24fa3e1a8490254ed58f0fb177fab8db9840c15dcbedd9053842cd6","4ac921c19fd86aaedf66eaaa369989d5f406b4848009bf7fbaa2660956a2e27d","5d45d5b9c42ea98958a8130b37a9239289ab613aa595cc24ab941cdd36f255db","00ca52d619dce6e90515e727bbcbc940cd694797e9e442da97273fb2a1e76c61","435eb88b35982f2c0a3a67d7c79a5fc27c610ec46d2ce01b82fc9fe74e00872b","9b6594499535d2fdebd9381d41cbf2b878ae5d7a85f7ad5688ac869e68c59e26","a407de4f98d8f47b07f6d453f8571a8b046c657eaf7253983f8a4761fcfc1e57","2de43b8e290879c111f061330d02d963822a65bff9db7488e66c18cb59c597d0","459e98400830f1ed49d9a2b3a8757097cee18df700f9f3fbdd4d571a6a9a05d6","e42aaf149b8c3bdde624867ddc2f5f73ee9a084756ccc8dc67c16cd7f632205f","8ca95552497fb7ed495e4544784ef26debc4aa03fcf03e6452822bb7da3b8481","011352911071b831f585f61184b501a893341e46fc9aba8f23a27d081b02d3d9","198676edee22eb362b9f42be6e45e0c6688564326d7ac8c78c49d4b535692f55","a8f2b1eb226c55ba6a50b4f9e41f7daf82ed22f31e84ebf68e8ca69f1d094df7"]

Anchored

2026-08-29

Public log entry

search.sigstore.dev, log index 2631896876 · entry 108e9186e8c5677a5ea0…

Expected log hash

82d6416ccfaae92d072047c1941611dbdc6106e011bca285ba92fc51ad50f4c5 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":"v1787970342088","kind":"published-quote","locale":"de","page":"brand:yumpu","quote":"Leider fehlen mir hier jede Menge Zeitschriften","rating":3,"review_date":"2026-06-07","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id1465873689?see-all=reviews","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 (4553ceda64e0…), 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.