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.

“signing and filling forms just worked (unlike all others)”

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 3199014646

Proof data

Record hash (SHA-256)

05a520931113ff0dbe7d41098ee2d348ff96cd73bd78fc3469dfe37fe473378c

Signature (Ed25519, base64)

w2pbIEkQnITVnHxn7hpZSB2S9YoDe0EX+CI26qaUE8hoiQVwgiRSZ5o3EPhAOIlCVFpT70+lHfs9gqjgoJbbDA==

Merkle root

79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6

Merkle path

["05a533f1217d229a7e5177f07457722690e9e1cdf5589d1d18fc96c8d12c5dfc","f864eb0f3e81d5d046463925ea745a0f11376b952c9579e0acc0865bf735de2b","b1e56ddac91ab1917d21b406fe41dda53c58eb8ecfb8b2e2f5d5c1ff06a234be","056e95354329f68c16b5bff401609b48b2aa48963ad851a009bdb0f609fe7851","e8aded1c701eaf1cca5337ca31ec5cbe99cb59eb99ef544c13204991a68e5433","f8287f7d5e68d0faef16761709bb0f22c962d9cab3ccc4e5af4e65cbd13d69c4","c80956782ef7e3fa60f13c7b93edddc83e6f16e1bf1d2bf5167e161c10217716","201749228a3e7aa6a82658087a725c9c332d0993f7697524a6c432c629d6859c","0c307bbea02024d622774c36c61c86f76621b5cbc776ed30c99b37ce625d7e38","a9a4d255f020e7e8a9daabb0c7d445465052b88d2ce94fafc33310bc0e861a90","19cf0f78344a19c5ad5b2ac4be31aa5cc1da4817be1a9ff489259e48dd8ed960","385e01036b50aae7fbf449763f02e352d0eab1178ab2a26b3b0e3fba537066d9","ca0926b42bcdad354c17320adc5661c1a0407072f1d5c01424cc2e7f9a3515fd","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…

Expected log hash

55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"signing and filling forms just worked (unlike all others)","rating":3,"review_date":"2026-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

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 (79268b3be1e9…), 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.