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.

“Simple user interface allowing for easy PDF management.”

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 2621712605

Proof data

Record hash (SHA-256)

05378b776beb6b02ad2e830774515736a4ff0e2fd4fbf2410eb1396c57970889

Signature (Ed25519, base64)

0cKJQPjFTAmpMUdG9wTq3rX0+jneKhnuKjtS1AoY5xK5x2gflmMsBFyDfv7e06yRYWDMx8fw51K4Of2gFwL4AA==

Merkle root

25b46ff2419988f674720a0d9957bbe6130bde21af352d10a6eb7fa1bd87b90b

Merkle path

["0535f77d9e5b2baf67b960f8e20b5f7c5bb157c56e7619fe126b3da8cc88ee56","33e70f4f7aee36f691b6db4bb30738061bded21cc39421c3074d83e750797a4b","9c564ffac033abea2222c629ace3555bacfc14f9a7125ca959c87bb57634e964","59d90c582108ada05a1ee740a0c904bc7e3585e77be8ada0a93e73f3dd175298","c9624fefe8925d86d7962034038c5fba8cd00ed7571f4154c6f5523655c4c440","20a40febccb753c82c6f1ebda1860d0702b72f9367d03e1ea674d29190c6775d","0e8575572357c00cf5fd4a4d550dd0e2a78644020a030790155ffc0a240c10cd","3a28c7d79806a4c1a90daa84ff0375c3b1d8210b93b9e245c5296092e8d064d6","d6b8f4ad16a228c0d634abc5cb4dd22809431ab5e106dd5c061fe30e685b955a","d1c8b56320ea84a1ef8523e653e9e24818953d50d9d80f90a0982b9f18eb5fba","baa0c9213423314c30b237e349ae1eb055a5a2a2703a8577e571b0031084fee5","a164ca95d37c66c485497740b3dd1b0f6d28a07a484c54c912e7c5e25c0c1d11","6a6f9d49462185c4ee2e85df13dc5c42a5069efd64c620310ba383253f8c37c5","5d4fccfce6f7964a21f73dab907adaf1b4bab75dc36256f7e7c2fc9e80b93292","dd8f1dac20e6d5f290eec3d4a0a2acb8f82d36d90a7d470d163b0eb872b09e9e"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621712605 · entry 108e9186e8c5677af8cf…

Expected log hash

e2d66cf3e23cbd8a996b6d44d305e387793b999542b5186c00c4ffbadc30715c 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":"v1787891207850","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"Simple user interface allowing for easy PDF management.","rating":4,"review_date":"2025-01-13","source":"Capterra","source_url":"https://www.capterra.com/p/172606/Smallpdf/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 (25b46ff24199…), 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.