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.

“Sie waren sehr zuvorkommend und haben mir bei meinem Problem geholfen.”

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 2582664613

Proof data

Record hash (SHA-256)

0f8b5bb1f94db30b90537cc511e60b3884282c8bb75d4318712490b23aa0f904

Signature (Ed25519, base64)

mb9Ysa69Rg9N0VvuRYKfu20fE4U79ORIjifu/1B6pQ5iMJ4ANJjZQ40UjRyVTpzJWlkNc2w1fcNye6zcbQ9yDA==

Merkle root

6eb5f0de999e332d4ff1f5a17c7cbc64ff4572acff20a9a333a7379bc9cd8f77

Merkle path

["0f86eacdec3b657a6e4af94c9160c8c09fc285ffcc6a16431e284f66aa27c7e1","9b5dc2eabc09d37ccf77b992f8c856ea9b0189cca66c56fef698c5ec6c081416","e4269684712d60227bbae6e58d2e907d4d430e17ba2bcd3d0624c08468be4c36","fc0d3ce2f0dfffbb9c1fac434a0a0eb98c49970d53d65e312ba527e049e5c675","6b3ba62f27a72866f3ea913d49366d260523556578805171a68155c4672e95d0","6e2f4cf0628a1090b8219e1cf4ba165f786da3a4e55bcfd2d10ab6b637ee78e0","81852605d67bfdc339b8bb7b36c3cf0d99e955b78d59e28b7f708dbcf82f3a8c","1a80b4fdbc4db55353b0efc28301155e679134fe5a76ca516166f4388243e26c","ffbed63921827517050f64b02815a2ff344035e41104ccb0479a4d1ae0139907","cbd0223ca3fb987e5106d95e9bf5674b3f3295af8cf4d0a9ad33b07f8527dc2e","7afe894391858c80cb03b8a16a11194bd93d6217e097412fb96d211822fb34a6","9337e940b7f8709548c4fe6a97db0e6d1456cbc8d635ace7649844bd1ab52675","84fafb1938dc12085d21bc69181bbfe988045a5a52e2d14f590f330785efc31d","3636da53ddee26549db9323e33a1dcd5168c1910fb5b849a7eaca6270f850dfb","f4ae9615440dda9b622f189073164d60d1c018e361cea2376abc66c14ec3a790"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582664613 · entry 108e9186e8c5677a71d5…

Expected log hash

8093bd44cdbad53d6d80012df9deb710fa18f2cfeb1b8cd0e55864446ecfd9f2 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":"v1787630263994","kind":"published-quote","locale":"de","page":"subtheme:proton/service/support-reaktionszeit/de","quote":"Sie waren sehr zuvorkommend und haben mir bei meinem Problem geholfen.","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.android","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 (6eb5f0de999e…), 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.