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.

“the subscriptions stopped being cross-platform”

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 3198489507

Proof data

Record hash (SHA-256)

1c5d1e846f25de44f6e154a2b3a6edf4512d559eeb74cf6257e865583a85127f

Signature (Ed25519, base64)

Pz/bwDUbjoi85ZENd0CzrsuohXrUL6xWdXNOeeC3duTsBHz0gVUcp+nw5YrbTY0OyNvS7NMlIkVGE6d4FrTxCQ==

Merkle root

240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494

Merkle path

["1c6407a1b371b16ac60b1026e7fb2be43c6eb1cf23b5a3b58b5515c6a351c537","3ee7c8b0b6188cf803aa3774851ad1b4361c74407e507a561acfa8a3c34df4d5","906f00ba4030a8782a2894c34058535de968b19f37e4302d4e7d151bf52f23d4","1856b9f1dbd542358cfe8ff41370ed221deb4fd766e09ecd969a78b550b4e84d","67eedb1a9110b01088478eb92037b840ba1651384bc153544685aead77d823c4","1498e637364d8377bc7175aa71c330500a919cfc037693bae31c8c00fe1efe8e","c28308165c34d51ae8200fde3a73bec475c2891d68782676d07c56b5bd2a9f50","b68689f06ac4514ff05695b91780904eb34e42626d0fd17de19d199b4f806c98","f84e978d0b5ee014a5c15fa7cc756456530e69e3d3caaae17465081fa3204b20","5ccaccfa616dbccdb097be9b2ba8d34d26512f59f9fd402caa74eebd24574f37","c6df9a01cf601048ae6124eca395e20102f901479ec833fe6d8868935094dee2","8d2863d47cf1e91a5d95d44242edd815a5e649d3aa8c8ca4de0cb4b30fbb42e8","7115b4e40dabe303dca48b39285385aef0729dc23733c818e0f3ca68286a3ee4","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…

Expected log hash

50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"the subscriptions stopped being cross-platform","rating":1,"review_date":"2026-09-28","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 (240cb9349179…), 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.