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 App ist sehr übersichtlich”
Google Play · 5/5 · 2025-04-22

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 2893887498

Proof data

Record hash (SHA-256): 4fe536346fd61554ecd454d51caf31a57c547e1b3be20d7a32846f4f8fb1f2d5
Signature (Ed25519, base64): bpUK7UxCys5aOd9fbtVKGWkS3AFM1ZQPpH2ozhQeD7pBA7F0nfLgLwNjMMiC5MgkUm8uYTOB0X+ruZH2etqNCQ==
Merkle root: 2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88
Merkle path: ["4fe908aea75a093da7d0b0e2092557c99e3ad0ba800d26f4b74ee644dc8efad1","ac38068685f32d67341d96356f8be7e517682c683cd70537cb635ad03ac608c5","c7aef82ab6f85a25a0c76ebcce9f296519b10f02dc2c8953e54eafa2f4a98206","9320d86ad9f985eb9d80b16acd16cbe6417d43ba675c1d134b9b9c2ed40f0949","58a4d398bafc348b340f517b8216a0e496b7c7ea5cbad588ac3f83aafe0f125f","270cf573a5cc2a2a1733a22cd157b0647f1573cd23e6142553c30961dbf66c68","c0e2daefa9dbfe988d810cafb392967639702a87a0dc34f8fac2f35f201186ed","3a342cddcc1b26ca4b55ef3c4ebceed38882d6c0950c423fc055457140173f0a","924b81f9a0c81e3ff5e7922d69f4e2218fd16b47027294a37dffc18354c08fb3","22b03dc3fa80f5086ab247fd815bae6e6c5634e48b4979d8fd15d44f992dcc60","cc8eb8c110ad6bfe15d65752a33499baacb1799054e70cec984d4c86cc084a38","ddad24b033c054e618d3abbc2cd0303f49551ff001beb238cabbc4b73bc7d951","d1960e2348cd4a71c41d10f1fdeb248b829ec3849e0b1a948157b58e7b767ef1","f2c4543851e26fd9d1e3721e592d66b00f142e537786e975d115c14b9cb61c0e","98191c82333f4385e47f318835e01d44ca8835262c6d0df40edfd5f6a4dc5c19"]
Anchored: 2026-09-20
Public log entry: search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…
Expected log hash: 90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"de","page":"theme:concordia/ordering/de","quote":"die App ist sehr übersichtlich","rating":5,"review_date":"2025-04-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (2f068f3de56b…), 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.