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 schnellen Bearbeiten von PDF auf dem Handy.”
Google Play · 5/5 · 2026-06-04

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 3199173952

Proof data

Record hash (SHA-256): 1da25191a9e79d8df3a987199ef2e5b2b2c9ebfb94c475370a76c590d5df5624
Signature (Ed25519, base64): 7s6zhvDU4XspqMlVNJvm5kMCFvRWBNLtc/keOzLfunfgYgiJ55cR8VKXUdjJu7pH5DKgsJwchRkh1pKHC0IbDg==
Merkle root: ffbc979c8901fdf55f43c5151768b18a738fc1c271c9b2dc97349c3fa8ed35d2
Merkle path: ["1da125b913cf1a8467d363bad714cb668239b3fa508b3193a3f207d0680db8c0","8dddc04c8f5dc6f8a6a2313b098adb5c0d9cce3ab3e136468f220904520bcae9","ab85757c62c06ed0c59b3b38b76e93d1f338fdfe452e6973f7ea758c0131513f","5fd9164e26d848ec33c90caa34c2b8afc4a1064ee1837af000ff949a28e145ad","fea23cee2e01e593e1fae0854023b884749643df24a5a59563e30aed5efef99f","f06cc6c97d6a327a638518ef05efd4a75d33b97e10a36818b88cad6a36867eb8","8186e95a27f8267cc5df81d707920279f8a64fe60f649c44cf8c065a5d7cb4e8","e72a84c4cb0a9e5229c953dca8699ab8553105ed7df9f8c436d7366dc9a162f1","872928071fff3787398e731adc41941eb6919f469c200cf57aa2eb882e3abe6f","2f67c30991863a3de7410fb2ac9933c1a1bdb626cd9aa5238ed7a509691172cc","c1e301c933406fd6db9108a2931b00d4f0fa66e93d9f930859a67b8bf903e209","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":"brand:xodo","quote":"Zum schnellen Bearbeiten von PDF auf dem Handy.","rating":5,"review_date":"2026-06-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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.