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.

“Unfortunately now I can't create another ID and can't use the app.”
Google Play · 5/5 · 2026-04-10

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 2543978942

Proof data

Record hash (SHA-256): ffc653e0d3097e382a25a3398801865a2afc5a112a1b546bb18f7f8a1e90c3d4
Signature (Ed25519, base64): 11Safuhfx43WCyyQ+B4VNwPiECea8SdKuUN7k432T9DqA8W1EQDk9sGZDFHRnZRi5NbrzqrDhB1YFYznKvlnBA==
Merkle root: 3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a
Merkle path: ["ffc4340a41c063713446e92d53a8115df8406ae741fea4615c3264c42b2fb7b7","745fce4441c92b55b40a55e63e974a06e5244994a4923e23c54671b687a125d3","205c49a2d68b9c742dde8a561b7b94e276b70ee37ec4378e5fd4bd3e3d0987f3","19fdf53202ef91af87037d73e9f79e4ced4e1b4903299655ffcd1c740f0e5f89","00160b9eccc21f0adbd29bca881872579cc51b2d6611ccfaee328c1abe5fa278","10aa8018c1954f97035ac34ce19dee4577ed3c54aaa6b019c08356039d482a91","397c92eef69b9e47d7fbadff929538a7f6cd880527b453bdcc1ce12396ba0c64","bd74c618557de25ec48e8591fcb23a499aec90e8f3e95c31dc0b8bf999a35f6c","31b27d31453717be4b35465835a52677998e5ec26db9ffb6e6ac69f499b4f301","6feab94c81a1437955b6797fd4681576369ed8a023c1b93de928b749fad6f29c","246f8342235410c48ceee34de37199612052ca8bfc8a05e2509de9ef8e0e7796"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…
Expected log hash: 69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"en","page":"brand:threema","quote":"Unfortunately now I can't create another ID and can't use the app.","rating":5,"review_date":"2026-04-10","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (3ea09355a1b2…), 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.