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.

“Ich habe das Abonnement gekauft, aber ich kann die Funktionen trotzdem nicht nutzen.”

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 2594624327

Proof data

Record hash (SHA-256)

0de254e2cef099bc72d95759d17c97ea6d841aa1d26580c1ea149955580cabf5

Signature (Ed25519, base64)

KLVUktwBsANHNLgEMDCRT0nKPIWSSvbu3/PE/JKxhXhZiAs4FbmfHD045r7Am/zr6yN4a7pf8G8VLHbONvrQBw==

Merkle root

511533b88e968df898cbb789f1e0a7c74bd54beddb5e64db44e84cd969b57342

Merkle path

["0de60010bc431d440e8bc59590699ca382be6bd5db209c254bd550e94f85589d","573c68e1c81b03238500081b04379f0dea64ec45f7aaf3839b5ea3237d894b46","e6d1d2292dafd863eeeae047734989289a6d0e7cb72c0ef3f1f9403b1105a947","46006cba084d6894348f33e43c7f88838a141a97f5487ac86d2d31a585bb6bfa","0ab18a45e37d732a645118b42a56831040b9eba606a92c9192175be897c6cf59","dadb9dad5504f4376643f5b1daf174a705a9a2d4f30e0de1636fb1a7a84706cd","2a5e0951c053995e199223590a51c5994f933e1a608cb6242b17ee4deda7b9dc","be707cc1820ca33b904995086421bd10b8410ca2628a0ed831a5e4f6f252f0aa","12d46ea7063ecdb485c4ae2fecb5da16eadf2fd5ddc8de056dcc65b0d4560ea1","78ac82a1965defbe1b6c3d3a641cb0a9fdf5d70fb1604dd3a2fca6460589c410","1c7f87e47ccc7d6beb75a40de1b388e7040b28f0d9439e4e8c1fafa763e28c46","78779b3236de97984c8bd07f10f4750be9da398b53dd41aeee449e79b2ae40db","1e5dcb0709f70986432d360592716ba93b21eb4ca9e1f148a30f505e8a8a0d15","a205b2c153763f2bb6a8d3814ed268bb4fe37a9e31e0b18e4c8c003a83af65ac","9181d925bad333f1cb26db81f39fb8cb2d737aac4f33738bf53faf3c4b7b34be"]

Anchored

2026-08-26

Public log entry

search.sigstore.dev, log index 2594624327 · entry 108e9186e8c5677ad654…

Expected log hash

069a3b83d828e54a700a05a96ab2352f1735c3acc608ddd8b87ba8e04e295f47 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":"v1787714775346","kind":"published-quote","locale":"de","page":"subtheme:proton/ordering/gratis-plan-upgrades/de","quote":"Ich habe das Abonnement gekauft, aber ich kann die Funktionen trotzdem nicht nutzen.","rating":1,"review_date":"2026-07-28","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 (511533b88e96…), 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.