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.

“absolute must for a reader”
Google Play · 5/5 · 2026-08-02

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 2543154575

Proof data

Record hash (SHA-256): a9d6cec38b417c06c31ff8bc8fcfd0bb3c349fd31cc79a5e6f0ad1dbb180bb24
Signature (Ed25519, base64): j3TtvGq9r6o9gE5UFwR+yCs8bbVjWMPt263nV7/SIinS+haiu6R4IjjObJyDwj8rbWn2L8YezLzpftOQzU8GDw==
Merkle root: 9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e
Merkle path: ["a9d71128abe7461055e68b77833577b5608342dc6e8b9e3b7f87263c7540a656","6942fb9124a9cb0ef912e87dc4d4cc37ae3481ce50fd1a267e436e7889a8b2d2","a022596ec314b9b8310aff8ee1a9c7720a65e78adfe81b3216376b964712af94","67e47e2e90764af928b14cd792d4a5bafefa2eddcfa2a7244eeba42ba7565b04","88fcf2b5f0e528e2ecf8f37acd49b43a74b771bdff7801d1433f56de9a8f8b5e","d05bd22b95baf3b605fe5f41eb08c2545bd191511f8a44fdd0f12c0f36b207e0","da18d4961e73590894b34c9d17cca05217da1c11dfa265f4d55616f84d8f1456","70061f663fe75ee044e855dbdad305ffeab15e5d83fcf68fde3692d4c518f591","b3feddb8569557207248da12df812527f57c68d586d142683afd16c720fbc14b","dceebfdae745da61f08d0d952d524e344f1883e4a66b6b7cfd16ffde86510c81","7bf32f5ac83edd1062ea783a6f2ac8a78b9f8f4337b6461801cf15842cdf5b05","a9ea77d5f2bcfb13455a160556f562caaf5c20739b5604885e61d45e6a7dca1f","e4a5dea6d8c67adb176d3835082d28d3cf13af48f2f96d2355bbaac3ec864590","bb86c0787e05591c350bbf95c58c2d99f0ba679999db51dee6e8bbec88a42a61","deb69ba818cac6d60ad262ee5febe93ecfd14e4c978778af299f82ef8a69b934"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543154575 · entry 108e9186e8c5677a0eab…
Expected log hash: 0099eed9d12aa99aaa44ed875b87ffaf90c46527b61dfd92cdd4db2c148aef65 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":"v1787284115102","kind":"published-quote","locale":"de","page":"theme:acrobat/fit/de","quote":"absolute must for a reader","rating":5,"review_date":"2026-08-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (9ca8f1c1ad15…), 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.