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 signature tool within the app because it's called certificates”

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 2515144749

Proof data

Record hash (SHA-256)

682350444e0d4e95c0e925a8b89832c9e0ce34c59f1ab7005a4acaea737cd075

Signature (Ed25519, base64)

V4NgknZ/qP3MMZNj7ukbuPYs36XK5JP8OG+xH7sge/7g1qsHfF9hTLVsItmqTzKili36LhM5GntCWUECIma2CQ==

Merkle root

8a6ad893af0f0bb6c448016a777af61f3f4935afd82df0db132e64f813535715

Merkle path

["6827a90e328de472345ee9d83c509461212a6b8ea169f442921d1c816c5024e2","2f9334e55856b4d551e31702bbb97bec739332f9a78c53579e25cf32df6320dc","fb6d91a6000ddb2ba650136b1adc91a07431db9bc5bed5fc92750af4d661fd73","6d6caebf574aa50a4cdf0ff7ef7cde8b035c88dde5f8b6d55753e4efad53888f","b18354888ce15efb63ef163ee5870f1bd26d59a274808aa02e6751c5d6db2223","ecd33e1b02c33f970783bf219b7d5dc4bad2b8d70c85a6378d728605c28ad8f6","0353813e13a600014c316dcd8f21cf814e95fa773da37ff2db73a0687064c56f","9474237765f1da7dcf28d05b4a5a4b2dbfd2080d34e1ef393b698b862955c1bb","ff7892b74954c20b3ebe6eec2d43d36798192bad1af25cffbfc4ae46d3504855","346e65a4dce4803deac2e89c6024d9f4e04bb0b058711f952cc8d46d615c97b0","347deae23705298f19e27fe2cff2a93fdc043dcd4e4d83db60f6a24f8a5abcef","3fd28282483646e6d175334fffdcf877a35d8aa4f4a3625c1e161c6067d9b015","5284fa1b0195183d338070f05d29e0d94229e3402263e30318e4f273240fdf18","95de144e054f717eac0f186a52d131e0ff4674147622cce8cff3d2611e7b6e99","8834edd87c11ce9424175f1744f71345038aee1c5b6f350a6f7bc2a49b63e8e9"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515144749 · entry 108e9186e8c5677a63b7…

Expected log hash

b6b79ad662332330e69c4ef135f6fb13ddc70048f846024d496aaa533f7f7fc0 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":"v1787137589246","kind":"published-quote","locale":"en","page":"product:acrobat/sign-pdf/en","quote":"the signature tool within the app because it's called certificates","rating":4,"review_date":"2026-05-09","source":"Capterra","source_url":"https://www.capterra.com/p/251329/Adobe-Acrobat-DC/reviews/","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 (8a6ad893af0f…), 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.