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.

“I paid for the full pro version years ago”

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 3240422411

Proof data

Record hash (SHA-256)

22be68f25ee2c4b1f1a77c5739469d008e4cd1d18223b9e4e9afd267574b5a7b

Signature (Ed25519, base64)

WPwki2G+BLu25VcW1dnQxvjPJd+iO5p8zPheMgKozLtCdZ/agHENX450xsUeSpAuYab/fw3IjgXwhNfXrEp+Cg==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["22b222473337cf9677db20bc27c1e32b2685c5872b1e0c06294de8e2dd21c86c","a6b927e326e7e201f8583a393c8cf2e21d49e2cafe8219127e96043d4aac4648","cb882d8b370134179952c14e33ab93940562131f1c603937f4f05567179a7c9c","dfdf49aa8f2ef19194f7d988c81294a20a5e41caf384a4090ed93625356e05fc","1e778bb10a703e98f2e42ec2d8149a379133807c43f00707bb55741b5725e5e1","374e5db766e968a5e85d662ca59f842f745a35865c0c982b57bca6fd5d9f25e4","079fd4db087bb982670d825b2897bdd474da554f215fbb57fea2f9c3bf498e48","149336b5eeabb1bd3ce1732bc21b2a7452fac743e70d9ea9bd2ad22642fb0e43","34b4dbe32c705909c92a5e36a3a11f914659f3be4b83b07632de848dafd580bb","9ae7d33c943f48f1799b8c2766e8dd193262242623ffe72423c5b34c5468837f","660d6a765109c39ed132fb0afa3dd507047c73076af21c08ed678d2a0c4157b3","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"I paid for the full pro version years ago","rating":1,"review_date":"2026-07-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (825dbc6ca55f…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.