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.

“seit Beginn an und haben bis heute keinerlei Probleme gehabt”
Apple App Store · 5/5 · 2026-05-18

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 3240367269

Proof data

Record hash (SHA-256): 1c12b75933c4ee500c978fc8fdad20f86fca7d23ab345000a7a617b1ef48a52e
Signature (Ed25519, base64): TWPc7XZTPGoIgeY1V0tWiN4aM0abjyyFnPuOWLDlnKPPPCqAHun4RAxA8tUty4PFqnXsrilHqS88XVKYmzI5CA==
Merkle root: 1da6cf8d96c8876e66e82e9bea7529c76d7e25eda1c07550505caa1baa49c4d1
Merkle path: ["1c14e088c885af580d42154d5252027eb846e9770de61982940f89c97e8333dd","74a0782a3596ccbc8e3162aa82f4dbdb889d33db5fff3961e1cd3d37901dbbe6","2afe7995b4a6720407278fe00b3f101c349f3cb8cc77d8caae4dd8bc3a91d3d6","435db8f14b9fef838c740d71866e0c2a81b114fd9cead2bfcc5771afb990a937","27406e8f25de614234fd1a33ed1f25d4fff17dc9a6f52d047c24d400f662b145","7924e5ab2651ab5f8822b08f0fbba013e1670a0b5d3b69e6e32a2ded018b249d","bc04a5b5dc1accb61966359d768700b5eabbae2f909be5d5b9ff4b4b7b2cecf6","a78fa3514d8c7ac4ca966dff76f5db4cfec255ddb5fb79761061fbc33f15eeac","f070f54df217de6d9d0f3a34c698d97c6c31286601349ac03b532ac67aceb8cd","82cf3938827fa9fdaee060126f8a9a71e48049337c248c8a1c96462a2edfedd2","4538d2af88491ec228f1721babceab1a37ac1f9230be10303e5ffe866b674232","ae52329abaf68e9da165e516499bae5b8b1835a4e008f4e52a7a7b160cafc13f","d0886e619546ab8e630cf9041b21d39a146861d5b7598b5044808c3537212a80","2d81003ff1cd2149e42eace973cb0f4cdd39b653f7b06a20804a1f1025023ebf"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240367269 · entry 108e9186e8c5677acf8a…
Expected log hash: f6397ecd2b8639a3c60345d0c567eb602411c7eb1bead248c760bae850816087 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":"v1791861381931","kind":"published-quote","locale":"de","page":"brand:threema","quote":"seit Beginn an und haben bis heute keinerlei Probleme gehabt","rating":5,"review_date":"2026-05-18","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?see-all=reviews","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 (1da6cf8d96c8…), 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.