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 was not able to share a file I prepared”

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 3126883925

Proof data

Record hash (SHA-256)

25d08b8de976a770a6971ae66abba1e2c8c841590e636920348b3fe6b3a88b8f

Signature (Ed25519, base64)

+7nKqIN9YCuGtBH/8/FlPsPE7JTxeDL+/2z8DpOHdrl71UqLvfq/JBpfeWCyCJ3nr4yBdgb0g97xP/sXc+E1Cw==

Merkle root

0d7fec37eb7aa7ca022c461398d36283692153bdca7d5292b2302abb6878e5f6

Merkle path

["25cd3a44de0247c7e42e4436eb3ea5484b3573791d33d5cab774585fb58072d4","c732bece1e1d6dd0381cd2e540eaab9319be2981158ffb733861fa656d2e1092","9a33aebdbacadda5148a1b7c0ca36d530a88fb9e3dfbfc3e8ad5336fa35ac536","00f13dfdbbce9f89dc26f15a296f6a76200412559618eb2623b89fade8d4bdcf","6a980c31e4f582d4a8de25a9dcf1c4f0f12a1d1ca31dea5751d66d8fee5b5d1a","b099f583986bb74b2c1a6d8840078d63fbbd8c561b53cfee3cc160d40a9f5644","7d3728426712487b3aebebce68d12fabf6c6b4cb42b06c6a65107c8759cfca2c","7d04243b9516fbeb16634935d8026e2e63b5662f78ac68d54effd88f70f41a20","ce043d1441caf0178d90e4de83d16709d5b69795d3a9365187100867efc7b794","fb8dd9f099f322671f74f875a7fd569ffc4b08c8f412ef9f10aeb75dbfd2d603","446d6f00c1aad1d74b7f09ff895df9eb12a934074935ab5f3affe4efb14a717d","154ea3ce3953e7a2f9310701e07b1dc6a4db12547da6d49ffe0215737f5d6220","f77c5de7cbbb3880e295e9751b837c38e25497099e33ceb7e9621a8a350397f8","7c6f9d1168e8a2f5a015e8aabaa46428ad67e71a9293d82f20ec40d2ad6c53fb","8c6d73d3d8b42a55077d4061fe37663a0906972431ecb9eb374f1f8461206839"]

Anchored

2026-10-07

Public log entry

search.sigstore.dev, log index 3126883925 · entry 108e9186e8c5677a6678…

Expected log hash

7790667e260445bf729ea3061132c2116b163a0e0b944eca343c9e8408350ef6 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":"v1791359818972","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"I was not able to share a file I prepared","rating":3,"review_date":"2026-05-18","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 (0d7fec37eb7a…), 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.