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.

“Standardmäßig wird in jede E-Mail ein Weblink zu Proton Mail für Android eingefügt.”
Google Play · 1/5 · 2026-08-12

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 2542443729

Proof data

Record hash (SHA-256): 0993feea6a2ac24a660031e68279647090facee47c6ba7451b92df6398d167d6
Signature (Ed25519, base64): V5EE+S3NVafwynuMVdYPpQu/ymRdid9d0Tm9LHDqk+BJLMIU+2VRSiaXM7D/aogrDJSJhSz8wvxugwPrcA8GBw==
Merkle root: 4354cafe0e2ee66c200238a4bfe005f997e761de26d9e528ed6c12dfe1b33129
Merkle path: ["0990d78ceb9e065d1c00144762e9974f948c7672fc25642d862d90edac50a9ae","840ae159ff1439e1a4f3f8933b230183685fe2bae859e4d5e1e6151886472c90","83ff72d72cb69279c3cc3b39d8f00a2b63895a31986d4bce60dd5186873af23b","0c09e095f77847129b8a728d689b29be0a1ea9891642853d20caaea8a8a3b2d8","7d658bb17085d2459a64fe9115ee802ecc8b13193e21e0c77b730371aca95dfb","6c267709225e8cddde4a2fb316d6f84033a4f12835bc1237617eb5c27d5d66da","d5cc177ea2e06f59c0d82f7d30cb882269442469c9dd36025d32a9e124283e12","8bc2a95dcfc39df9ac3baa9e2a2b0274d2b619be9537294cde1711dedbbcb3a7","a2b2a670d69892909a9ab00f56d5bc73a35643c820117ed392887bc765b7580c","4021e48b7a4778c41bb74647abdc4d0639f3d1b606cd7aa88da63d95100cbc2e","7492104a60008c8ff17d2a61269ce71d0a45a629bda2bd27c03834f883794aae","b7c031c5d5a259b30d42108b4ee16783cd741d935b245cd223ba5132a4508cf2","8768f82f7b88a738540ba1a3e2c8c04be4a2e7d425276e7dd71d0f787a7200b2","34012874980befa2c4e79572fde2605e3883df8e5878fe4daaeaa8bcd10c4d2a","16ed4be9ece293c235c5510e2cd19a05055f034548e73c12f8a9947de7b32591"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542443729 · entry 108e9186e8c5677aface…
Expected log hash: 1f12c9d846c7a9fd8aeda84057eb4d8f639bf78886a62c6290a2a60cd48e0812 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":"v1787280389476","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Standardmäßig wird in jede E-Mail ein Weblink zu Proton Mail für Android eingefügt.","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

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (4354cafe0e2e…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.