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.

“Nach dem letzten Update lassen sich Links in E-Mails nicht mehr öffnen.”

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 3288590621

Proof data

Record hash (SHA-256)

09fdca09442213ede9cb41a845824c068d70bb50b80a73754504e1ec5defcab2

Signature (Ed25519, base64)

XcM4LP2otdEw2/LWIa8rmuX0XuL76U3apUnb1FPWfDL4uqoK4kJ5eZaoENVJ/3BPBpLl/sy7rNNiJ+u98PmOBQ==

Merkle root

5ee295eff08f25e1ca2fd839bd395df8ebef79af0e57c3d4ee8d263342a19422

Merkle path

["09fe496b6508c81f9e6a0951b1e8f3232fb93960390453e72cd42136cd821f8c","67cebc4246e0ae9e18a446420b3a75f8b7da4d1296b8d190bf98d063a0794aaf","f6904a7ba7b85d2163fc8c4555ee8002f57de4a3e9778b2cf67d354a0f9b1bd5","e663a661ac56a355256218c20fdbac51bed4b0974e3a8baa779299701363b416","3003e788de09b7ba5732fe8949d5a74545e928831264c1932e7ce98568537aa8","bc29e6973fd769dc567155cd1e01067ca5b8189434a0eaefe961bfedf8d3eeb9","357cda191c784adb9b57b7ffa9d0ee42469f4209f7a17bec01c00bb25d0752d6","7572c094d5274852d91eb92e1963093e2495a33c814c9e9a033dc230c0811f54","7bb9849695d24d8d7bed1db2ab9a47007a6af09cb512c4d078062fee62321206","2b42b732a1119f08ba3a15625e320d4a4d03c43ff4ec6c4efbf7292bc6aac41b","6db62b59a587d4c7742bf7ac4dd122015b4901d702423e724855870b46081c4c","41ff37d2ba7c20d129650a01caa12fd58478b2ba725f6a1900a5e8a6edde7742","149a88e487e0a55b368195abac6188b4f1a5ff2534a675089a6bffcc120ce8bc"]

Anchored

2026-10-17

Public log entry

search.sigstore.dev, log index 3288590621 · entry 108e9186e8c5677a25c9…

Expected log hash

74cd7239ea435495013841baa58ae65725dc6474b09f06da03b154f0c5d58357 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":"v1792206865504","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Nach dem letzten Update lassen sich Links in E-Mails nicht mehr öffnen.","rating":1,"review_date":"2026-08-12","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 (5ee295eff08f…), 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.