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.

“Die nützlichste Funktion, die aber schwer zu finden ist, nämlich Text von PDF OCR transkribieren, ist bezahlt.”
Google Play · 2/5 · 2025-11-04

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 2595408668

Proof data

Record hash (SHA-256): 09c68b85f9895565f08d7056bf69a32ded58a5a06cbba9394a60ffce51cd6c2b
Signature (Ed25519, base64): Nv1dMA+d9BmtgdTYweFudrts7tsPyn1LMQ2wqFYiVd9nSd1X8XwDuPlGOE0g0nRvsZIgNZIOexF3eWmq+4PyAw==
Merkle root: 7b9a4691b4a07ac5d1173e4626ce63916affc643ede736e9a42881218d31d172
Merkle path: ["09c775fe4893fa0a96991d9196a8d85b6db5828052bbb9c6241b22749bb6b68b","30cb70f1c509939f81eef28b33820dd90225645c5330ff42b8eb06a716ea5ce5","53fc8d6838b0d3196360bafe6cb86e67bbb28daa97413c81d33b4a86986f014c","68e5b6402ad5477230ec20e369901d922998f5a87f63a2a5c955fb4d4685268d","63f470ea9af88b4bbeb0bb2c43a44d0a7e94d0bbdeaa85c3859fa11c09d77ad7","08205cc169c1a8d1cb821fb40eb0bfe387fdaa76a3127d8e385ca44ffe7db811","942b01d4342330437a30ad350f449109369ebf50d9ddace540de633331d4b7f8","c7b381513cfba3360be62009c98e28bcc3a35355d0349854c770bd3c5336c9f5","90e954f192124f1193ee6d22ba32b8eaeffb4a75f56666f55445ce58b9f12c23","09d20460c941e3193919dde037b9286cf2a4c68b57a9961ca2d80f46e6f105d0","17dac5ae2a6adbdf2fcd1661415667888e746b649cdeabaedca38743468a92c6","21bcfa0a5403e9274d8e9091c14e04623f5ac4426dda825a46d0463078e2790a","7406413224613615cc5cd19a127a6e24768c7c8638c392959ed907b3dea0b3ce","1a45b3586aaa1d52bf0d35f80f59c2194992fd40a7bb573af53ca4a9c5b2c40c","e08d96326ef8a4f2d48853bff915e1bfc3b77e83a5f37428fc0c18a79558597c"]
Anchored: 2026-08-26
Public log entry: search.sigstore.dev, log index 2595408668 · entry 108e9186e8c5677a623b…
Expected log hash: 7ea3454fafa335b6d74b2f12cf180783c952ccc9a9ba89af7d5ee27b01e07154 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":"v1787718572132","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Die nützlichste Funktion, die aber schwer zu finden ist, nämlich Text von PDF OCR transkribieren, ist bezahlt.","rating":2,"review_date":"2025-11-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.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 (7b9a4691b4a0…), 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.