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.

“es ist nicht möglich, meine Nummer hinzuzufügen”

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 2681752502

Proof data

Record hash (SHA-256)

13ca043d2efd08e42988e7667b901887941c0d61dc0e801703961061346a4f60

Signature (Ed25519, base64)

pdiKcWMZrPnZGG/garA2eUlft9ky71/Z/UPMksBfFiXsYsODwT/IHK71D0XbXB2hDRfzOUd4g93Tfz7eU+AoDA==

Merkle root

72c0aa015cd6b00ebd7551a6cd34c5318c1eb559497c85c40f41ddba3c674d1d

Merkle path

["13c95be23ab25bf6fe55a1507ea39178e16aa7a90a47aa4d4e2b178e674a3351","44ec72516f92a200de94cb56feb7d763b2bccdffad2d2f1bd41730a618640b7f","c589f545b72d793edced8833247a4e5e66e2e597e3c969acb66b4380f9fd6a5b","0e84abffdb07580b87caa43afdcfaa794970f8fd2d3843ea87d421cb1703333d","d3941baad691b53a07fab3a9e55d0ca0d0b24d40a4a353082458e2ce7ab8e83d","955da5ac6af810652cdeecd832ae961b42cfb453ae03f49721e29ee20a66c3bf","60ed2cfac6af459cfa4d718e5dbaa85062d4bebbc712aa351b45c0ab365af6f4","3cd3527cac427f9716ffaacb1ab24bcb626011020f9f19db948598137aeb562e","511a22f4cc3e4d58dad576aedc315284d78dfeb132a1d1d99c51d7370790c461","79662c0f5b183f9ea5b954052babe4046d50f5685515a57ab5c6b0b2232aa1c3","9be0034e1aa4e6cf6c2855c97156f984f03ac913bb5929ed34e0b551887669b1","df08c6a9e36a86292e72564ccb7c0060b558bf36a69428f447fbcbe9729c5184","c3936f0b575e45796525d22d8804e7f6a2424fe3c025c9ae69a0548c2f5425ef","973571fe9e8ee02f91997423b3cef33593b4184b3c20f8ec94b381ab9623df52","eb7d383cdb8c366a1090b1489555cc39467112e2c4098fb0949786fc0e9c6076"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2681752502 · entry 108e9186e8c5677abd0f…

Expected log hash

784442a9aef69876f96b752a429b96548b5453a825960abc7fbba35f6df60c47 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":"v1788306517012","kind":"published-quote","locale":"de","page":"subtheme:proton/ordering/einrichtung-konfiguration/de","quote":"es ist nicht möglich, meine Nummer hinzuzufügen","rating":1,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.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 (72c0aa015cd6…), 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.