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.

“I used it to make very long PDFs and they were added instantly.”

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 3240422411

Proof data

Record hash (SHA-256)

0552cf2b065fd24b674f1bdd5974fba4e790ba33b9794c366253f855af935c17

Signature (Ed25519, base64)

guaCWdkalfY5Aszxvs4DfWN8Et/wCVpS8fQQns1DEHEv+GOxdp/VVOre+ydIRhsifrfYOAHlWU20muJp7UTzBA==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["0552f4e49fda06e27a9eadb0e5539425dc7a8a313ef1a75d3a5551873f41a6fe","0789495812d7717ec40cbe5b6b603ec40486771b941ee1820905de3d10f61574","ad58b74dc0d21bcf87a388368f97c9fcf3390f2b41e74e2012f3cab4a84445ab","2f3fc98171985dbfc5dfc7380660d45d451dad15359e70143c4bb7524fb4a47e","500cfc47d4fc5f207e7311755ed7e4c1cbc55037a1b38046fe0b17acc78bfd92","1befc237b09e014ff8a823f35178a1a8f3ab0eac152736dfed830b9e9048cf3e","0f738ae1a16c381fbcc973ae42ebed853a18ab14ed6eb069f9e6c00d1bc4515e","228014fb6d9e07ca0409586d46599e9cecf330c7c6694321d3c0cfb759f9525c","8e4cafca73730af61e510b30de29c01df651dd4fab82e12e248e97de4ba8c09a","5090dc5c0fa0aabe56cef806251e888576df73cab4990e2c04a3e7fb3b88d3d2","febf287b7c32a2fae856dbf526e351f23b5b8476b4c1b3e342c1def13e494cd5","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"I used it to make very long PDFs and they were added instantly.","rating":5,"review_date":"2026-01-13","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 (825dbc6ca55f…), 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.