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.

“die Darstellung fehlerfrei und scharf”
Google Play · 5/5 · 2026-05-23

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 2543978942

Proof data

Record hash (SHA-256): d4403909fc0dc8129768eb449461d10430f173158720c17e61296158005f6d79
Signature (Ed25519, base64): /g7KrZJEUqc5nxbDvRNUOkDHsxx51yESm0LbT6xly96qIhZwLZ8mcSPtwMWXC4npwo9ktwFVjg+KXSPmFmOzDg==
Merkle root: 3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a
Merkle path: ["d43a5f53cc8567f55f8ea871c450f9aebf726aa91e7d7f86c4bd3f3d1b871730","f8444a1618315a33aaa8a07e3b6b0eef484640c8cedfa345ae3f9c3be272046c","81a638b31e2513427461f8a2874134e33a958e19b8d2ec0f4b446c58284afcb7","764cd3d7f059919c6978ef5da88846f8b89373340bfc0d0a8360e0e011a80475","19c07418a01b8f50b5e8d997f04e2f328f451269dcf845c21c2a7b85a579451b","09974371d9ffc242724796c5b66450836a35befcac709cd1805cc13560f83167","7cd611d6030c4849f22bc2470b817675c1ec078b8465cbf1ddf526007092d061","a124cfeadcba6ace02ec5c93853420b3f4d50ad8638e9cfb085b37388e0229a6","a629176b1a0e3fc536f0eb0bf8cb34519baa722dc3d2317532f5cb88f40bf2fd","9e96e9663cdbdcb49a6e4220f13cc8e1ab09c8432f316b01f9586fad1460365b","348c747899b7647158be369c5d845b6beac971684ff0586e2426c582c7a24a28","0011a798a202ba37df39f35b40be51a21e4bf4d59bfc486058c75a05f16be2b8","9e72e518c6434a6e0c542e1f48a14f35526f13e0776a1ab92f1af9bcefd6e13e","246f8342235410c48ceee34de37199612052ca8bfc8a05e2509de9ef8e0e7796"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…
Expected log hash: 69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"de","page":"product:xodo/convert-pdf/de","quote":"die Darstellung fehlerfrei und scharf","rating":5,"review_date":"2026-05-23","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 (3ea09355a1b2…), 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.