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.

“Excellent tool for storing, editing, and converting documents”

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 2514013184

Proof data

Record hash (SHA-256)

633cefff7409a070131609733050881093582179f809350709c01619908983c3

Signature (Ed25519, base64)

zmcK/8phBbQIFV3pdzL3W8c6c1KL/SNSCexckH7gX8eyM8RsNPjBvDgcfffPkBgKwnvymbmqIrKH0EGIqzr2Cw==

Merkle root

677e672fa444dfe5152ab91687c577772e13723ca441b5c8063508daedacfe44

Merkle path

["634140c9aa8d27d3d41f8a3c24f6c91a922075aa215326d91b17761942c2c92b","3668d58d224d93320c481f77da36cae6419d966c300fa03807c238238cce4ab1","35040082fd70455bf0a1dea69ffbe4b140d948040c5a0b50243e43b1bafce397","3167140295f5b8af5d4936afc4aa57ff94ee02ac71bfefbef4788ca3ba5088df","2dbff777dd30502a6c6f233c61be5720f2e9413a8e109a83399282cb947cd2e9","743894d2cdf997dd7b979cfa6680a507d2461657ee0f1baaf561489f0aed4112","2dac965c3135fb70bb5dda9141d651246b39babdb6bedb27a7b67553170a630a","1c1c0d2dce605f10be025cb73bde6b55003ae9c98c001b60e1f2599cedf47938","2f16f0d18c79c7bed8a1a8c850015411e888010125f5f2a72ef9e12514334b04","326b52c59ca1829ac3ae51b84ebda25e82b4c416518c8f2d17a0ff731a5f66b4","0b5f81c1397895a67fa0c168f5a03dd82e09e6398e5f4a199ab43883af912889","5999ce9331a3d3c3b42ff68c7d0c3b2938b4aad17e69c094bbaa432c5034da76","ef65dd9ebfc0d3ef62099f320670e0ff1ffa0aefd392ab7dbd6c1c6483d33d7b","3e9df542f4415cfb7321e531014c29668083cb06fd7805d6083ebd6b24fa289f","188420cfe03d9830600dc87f84622c41659cea53d9b8db8954bfc926ce1d4dac"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514013184 · entry 108e9186e8c5677a6b00…

Expected log hash

a596e5a342226b61371cdf76b5c8be8e37a3d00e7ffe8f7b0b550e1a8d1459dd 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":"v1787122978040","kind":"published-quote","locale":"en","page":"product:acrobat/convert-pdf/en","quote":"Excellent tool for storing, editing, and converting documents","rating":5,"review_date":"2026-07-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (677e672fa444…), 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.