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 application was of no use to me”

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 2671985937

Proof data

Record hash (SHA-256)

0c06a077f5183501d04e21dedfbdcaf1df62b1646711660d0ea4c7032f4f7b2a

Signature (Ed25519, base64)

rbAlx3MHgTDTYHeQhhFk3LJNd25W7ML09+hofxyuW7vXhuOlv5Bg1MTLM1pBB4H6mm5gcqiQ62A0a7+OtuHVCQ==

Merkle root

fb09dbc79cd836b1d85124e5c45f889f4a8cee2bd2a4f93da34de8effbaeff27

Merkle path

["0c0774b75eeff51fd0a810aaefd0e7143c0457462c4f710fe18c5706c8016e1b","f65514cde809b0cf3d7e38247edee6a85b50a6f3f5e31a0d45b28853f933fb59","edd88bac02edcf6cf855758fccfe4f8e68b6407b0f432356981b6565da36c006","2a7251d01bc2324ab6af1d4c64d189983dd486cebd3bcd4dd7d042c18890d06b","dc6a2fd266c90c3fe433946df0bc99c8514973980e79f4ecb62dc99e8935c696","3ead7533c3eada204ecf6042a79ba5eb42d1bac9da619b5ba21268ea562447ef","b98e558a5c61bb53595ccfa32d144ab509b29f76915c2e267e90e44b9f959108","ab0b782959b08ecc6a2131c04ec6e4a0bb208c14b10e253a9d3ed0c8943a1530","a556bb4c8b5548af012bca95721099e80596ce18ba02e8dda719bc86f625e39c","b59b3c6bc63319ef386d0658b23242f1c25b7bdbcc5d61af3057423bb26e09e5","92969b0d126cfdb1ca355f068a61d2e1f58258258fea9a698452ecbdb91ed99c","b7026620eff1301525ef293efce182d3113aa9218dd88b19517675c383f2d8b4","7637c7d2d718940e0c1978ddad3180208467c8a8d14b3aa539f41f8406f85974","598e586ae65f83870b6b56d7041a4a16432f04a124836b885f1eda80da5ea2d9","015fb6cba9f4a0c5e2fef4dbf7406ea747b003f2d75f764dc48e74713a28c269"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671985937 · entry 108e9186e8c5677aee5d…

Expected log hash

21d04dbed3f9dfa348b1c2e5bdd0c177d7f26175563f32c871f3a55c22274c31 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":"v1788240889164","kind":"published-quote","locale":"en","page":"theme:smallpdf/ordering/en","quote":"the application was of no use to me","rating":1,"review_date":"2025-10-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (fb09dbc79cd8…), 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.