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 2632385362

Proof data

Record hash (SHA-256)

13d6dae0317417aaa1bf23254776becd931b2f7bbadf7b39ada17d6ec8189528

Signature (Ed25519, base64)

s6uYsEiEXFaXf+cAKxYL8Zz+mHKk+hImfhJMsWyUodUQ0VPavH10oQtxNRFX/cMysNOoR0FiWUu5mOT8Te5fAA==

Merkle root

f61e30d941fc6fe4321f44fd609b95c61e672bf5a5b9cf2bd801d7c6838aab08

Merkle path

["13dc9f15a1ce2ce7987d3cc627332132fa8d486672331420928029da745ef75f","63d7b5a1433ea42002eb7aeff5b74b3ce9c344caf47354be68db730e5893329f","1c1f2ed3ddc0d0b5ac8d270e0741876fac97b664424aa576345518de5167599c","7ac61a35e94cbdb2b2ad1150a2d9ca11f04c4a66b3d92f1e2a8913fab0cc4a56","659e02c161ef07bf23cc840e89fa9f80bb038133b4da44db9c05530014b81db2","07c4d66aa7fbfb0072e225cf1d7259ece240a090644794758653089b7e6ed156","80149aacfe0c5f1a668fd0ea85978a71572e0b39dca2bd9a5f4200dd5d146e89","4f04272bf53e04fcf812f6125a63e5957e53fcded6ab43d701c4a324df780e27","599cc20899fef7e726c7658263858e96c00ef05bb6ae7c567b599da7441c4b48","c0e6b754701d688e5bdd397dc37eccbdfbd0d9d486b095c2e0cb53e068f1b1c5","a2dfd7c1f6808989f06e8946b5bde3ba031bdf94ea9bbe32fa9a53338526218a","105eaceaa199212dcecf8bc5112fbd2676474330a6e64750dac48743957d4de9","c86d560760e05e20bfcabe7dbd23f84e1f9c05d2fa7fe966b3caddd29a8b78fb","5bd4398a4cd1dabda445e7cbcf0d486b98dced817850a98153d8d5d56c4860e6","497997b2593358750b2d0fb52f3c0a7172c4dffade9196b55f1867799a99bb7f"]

Anchored

2026-08-29

Public log entry

search.sigstore.dev, log index 2632385362 · entry 108e9186e8c5677a1c4b…

Expected log hash

8e81bec440ba58560c58893bcb51aeb125fd0d03ca39799edc695d3f533e8f32 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":"v1787973390454","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 (f61e30d941fc…), 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.