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.

“Zum Steamer entkalken braucht es oft den Techniker.”
Google Play · 1/5 · 2025-06-05

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 2904877428

Proof data

Record hash (SHA-256): 3d555b93d59111f28ff762331d86830946605b2dfc1053e9581889cdf682428e
Signature (Ed25519, base64): O2bF5xOqyB/wYDi1WPnxHj90Ekn4GOPWZNhChQmZ033ReqEVnu4VF3e7jHCOmB3uszFx1/siDcbTBRwrH6O4CA==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["3d57801527e15c83b35c8c864b97268558bddc2dd1614e8920438ea4b17f6a30","06afe80622103ff781a7a29d1e4bd192f9cf58821c84e4381d658924b3b52058","f64ba82284d06a6d69de8066a589f61089b74d7066857f5f72f0b244fdb9af86","ae7418b3a679fe839ca6b6608749f85e7b85c0cacab8faf53cb74157f1840bc1","9a4bbede82ba10faaf6d658ff6d297dd57d635b240807b45d15982e5b5217477","cb43e5078c4cadca9ec1341006e4c6d71ff7ab6a27764f3554d8dde150bf93bb","4d887454c198a5b8e3815a02819f70e2c7293748f99645d739fb74089330afb4","1a5df9f17d20ace87cbc157c168713e6f9966d06cb8146bd37fc8133eb2e996d","4669df279f85314ae61728389560a658c99e63dc06644b2f76b3b48dac4cf4ab","8c685d4ac126dce36865d1812aa30785627538177ac02f91aa0cfe79f63d9c30","90df5c697c0e7ccb431a46ba4929cb93820a83012f63a3114aa3e7fb2cd52253","f61ec008da9cedb952cfe797489f2f8391c0dd3d9db879feb9a9aa5b68ebbac5","b296372665f7c3838922f5e4d88b25d49437a77f990ac53d0dda027dc9495fe8","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
Anchored: 2026-09-21
Public log entry: search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash: d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:v-zug/service/de","quote":"Zum Steamer entkalken braucht es oft den Techniker.","rating":1,"review_date":"2025-06-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.vzug.home","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 (e299bf38720a…), 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.