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.

“Es bietet keine Möglichkeit, den Inhalt des eigenen PDFs zu bearbeiten.”
Google Play · 4/5 · 2026-02-23

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 2647580424

Proof data

Record hash (SHA-256): 070a20dabc4dfda06f9143360230a3a793248a496d97adc8a625ee1f9bba8c1e
Signature (Ed25519, base64): k9k0t63nswDx+VqNtHuAnSZ/RGA6XqjkIt7gAcKD2Rq64GJuGaG1RUVx2uYe8GplNCG5h3ZcbbtTn19mhBdzDA==
Merkle root: 11cd275e1b8f31daf4151030cd5fc67eec90cc1b73d6c3abd8966dac0ea44663
Merkle path: ["07053b1f3299da58a0f4c8a4f04ef13b4db2b76054d08bfaea18cf1aec661800","2b828e1869f0d6cfcda9e9801e90e40f41a780581a657e4998bffdfd7a502965","d10302158c7229df2aebb8649c7f15db1b9ff3ad150e3fd4c4a9aab89fb4b643","9e311dfff9c701f6e57fb387d02d0edd54341c3fe02fa3da085b75f482ccdd00","905652a8e7f1fc4667ac3d6a4fb156ec0d44956235e3442f7bfaabbfb0ce13c5","17f1bd9498b9600fa555ce18d795c9703f979c04c1c18687aa6630af0575248f","2113179040f45e4f8ea65d15ba00df5f3fa728998c0cf92abed876471d3cecc7","0651c219eed3b84a2d6ef0a11de2130bf8739f939474a1f736378d29a02fc52a","915960498757c1d1ddabbce708f929a99d2509a45e1bde4f014f424325579b4d","bdc8156fca78d917a129d364026eaaf4b2aa637bb02d53f7b98243459f956b4e","7cbf95aabd911b9e32b7283277c1c8d3b2d008ddefd8c4a3567f83ee6fa293c4","15ef754b0ec11f0bcfb1882f47ccca6fc7a2c7ee673bd9ce3c5a3082d34781db","3012f7a2838d04f2071073f8ac34932376b18c2cc8805b9bec98ec1dc2d08a95","b9f2345d92694d25bd0490f4a3b26a3b973fef20d27569c442482b8bf63cf733","29dd516ceb1cd9fcda9711678cb72a0ee0864d72432066fb0af064f01b46c0cc"]
Anchored: 2026-08-30
Public log entry: search.sigstore.dev, log index 2647580424 · entry 108e9186e8c5677a331a…
Expected log hash: 29924cde6f1b08ef8102d24e7b21fea7f81e6b89af990cb81e380cc325864e7d 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":"v1788064620038","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Es bietet keine Möglichkeit, den Inhalt des eigenen PDFs zu bearbeiten.","rating":4,"review_date":"2026-02-23","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 (11cd275e1b8f…), 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.