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.

“Really a simple documents, pdf viewer and annotator.”

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 3199173952

Proof data

Record hash (SHA-256)

1dda93316d9f476e937c2fbdfe8c6f9ebd8c7f80c2285b04199f958a8788b66c

Signature (Ed25519, base64)

rGeLERTyU4G3LyCtyX41YzG5hmhhGEcOS/bhmGLQDno7B4F/7yZ1D4WJkop+Ccjc2z72wNjJPc7/z2is0DMNCQ==

Merkle root

ffbc979c8901fdf55f43c5151768b18a738fc1c271c9b2dc97349c3fa8ed35d2

Merkle path

["1ddac1b56ee197c74a7fb3b029864e772d7b37b638ae035cd59789c1a059a3c8","c9606cb0e62efc0c324e8462ca48ec9cda43e062aed1447303db50d26e12591d","28e80b235eb9c8c2a65e5ccc4bfe5fd7e05fde1a554b86c351d3c6c59b4ec536","ef8c350474b2d1c068b7965b0eb55395372895646c4ab34853ae40e79f91f016","f51c1ad6e2281fb3654efa349ce270062adb3889da473c6331150e1e5c16d414","f06cc6c97d6a327a638518ef05efd4a75d33b97e10a36818b88cad6a36867eb8","8186e95a27f8267cc5df81d707920279f8a64fe60f649c44cf8c065a5d7cb4e8","e72a84c4cb0a9e5229c953dca8699ab8553105ed7df9f8c436d7366dc9a162f1","872928071fff3787398e731adc41941eb6919f469c200cf57aa2eb882e3abe6f","2f67c30991863a3de7410fb2ac9933c1a1bdb626cd9aa5238ed7a509691172cc","c1e301c933406fd6db9108a2931b00d4f0fa66e93d9f930859a67b8bf903e209","9ef508adee40f106af5da543ac881bee98966b5cbaa60f63357b505631495631","81757bca5afdb109f23b2b1ab2e08f434f626af25e986d2585973e2409a82e36","2f35432083547a52411b4b8128ab118601abc6a6e158a38894add0923255dc0e"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199173952 · entry 108e9186e8c5677a85d2…

Expected log hash

3bc66074c7b0a853326bf5ba0590a111eee6455dac5c98c791c22eeea9a48920 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":"v1791689192448","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"Really a simple documents, pdf viewer and annotator.","rating":5,"review_date":"2026-05-06","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 (ffbc979c8901…), 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.