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.

“Was mich wirklich überrascht, ist, dass man Microsoft-Dateien in der Vorschau sehen kann, aber keine OpenDocument-Dateien.”
Google Play · 3/5 · 2026-08-05

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 3199173952

Proof data

Record hash (SHA-256): 09229cbb1a41db8a03ca930074bc3eb6451ff2b27cfad21bad1d1bfad7f482d0
Signature (Ed25519, base64): K1XQttuSqV80xFfmg2U/qgWLpvMKZCZKSqCMXZTpslyYSCc77w0WCZ0jnk6273zpWEm9evkwakcNfuE7L1AHDw==
Merkle root: ffbc979c8901fdf55f43c5151768b18a738fc1c271c9b2dc97349c3fa8ed35d2
Merkle path: ["092168ddcbe9036640e3d86a840df779bc18fb150cb5d839ca0d15bc97adacd9","42fdd77c4937166aea0253ad159d40e8dc86d9a0c9660aae438fce96d45ad178","a9f76c5034531d86625d37812b12e37f4c6d135057d9abcfd1181cc310cdabf2","18656c4e757de2055ccd3fe030b7b09c24414d47c7482b70af01c616d612a74b","c0a5cceb1a3e3710229bfe951fd932631e6925f030ee2dafb35ae28cd485d0f1","2b5280b4db6ae9b3c6987adabdecd3277716cf1bcc486c1d908102bcc282f3f2","4dd8874b7a958a30871281f781db9e46e769e354d6dff41cc2b0a06fb8f785ef","99675948a437288162fcc29633295440b521ae0d33759757860667e6218731db","05238f8c8551d2f8825995b4e0059f8b31cba08b29dec0cd0fc9ffde4f9528bc","48a2f8f704121ce9889596df35ad5d5dcd33187a2b9f42b8966737384d2f25ef","30b2221ee57f65dcaf03540825ad3191470cf9feeae9f59674d785af3fb29f74","9ef508adee40f106af5da543ac881bee98966b5cbaa60f63357b505631495631","81757bca5afdb109f23b2b1ab2e08f434f626af25e986d2585973e2409a82e36","2f35432083547a52411b4b8128ab118601abc6a6e158a38894add0923255dc0e"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199173952 · entry 108e9186e8c5677a85d2…
Expected log hash: 3bc66074c7b0a853326bf5ba0590a111eee6455dac5c98c791c22eeea9a48920 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":"v1791689192448","kind":"published-quote","locale":"de","page":"product:proton/proton-drive/de","quote":"Was mich wirklich überrascht, ist, dass man Microsoft-Dateien in der Vorschau sehen kann, aber keine OpenDocument-Dateien.","rating":3,"review_date":"2026-08-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.drive","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 (ffbc979c8901…), 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.