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 app title says you can edit PDFs”

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 2513802575

Proof data

Record hash (SHA-256)

6d55e8ed89a5fc07659e3b4c13e79eb9a0c05448ce94920615863bc03852f4f4

Signature (Ed25519, base64)

ItRPyMaevGFawg+5yEe1S3mBhDta8Q08Fid+X9vlJ3+i3jSC51pchFsZypx/aFwcnFn2hhMxds/0IjjckfhyDg==

Merkle root

80de158564b7616572ca0c0059561f6ec90cd5bce49a388e61df989f3f6f2a86

Merkle path

["6d528a6f2cbae2ea11a7437c701b576a5dfe38253b66e91708fa9a009379af0d","fc0d6474790a70e21a1f0254283e5027109318457391d24b5c0175a195eb3e4c","7f833bf1429ea17511376143d8dc97ffd068550a90ec249afeacde3f67987833","d183d2e89c30c90a54c90a82571d12fe1f4fd6801e7a393d8c089c9fc38fc414","0181ac183eefb17efe3e96322159613f28a37db4dd0be2230648ee34b1996fc1","870fb50329875ee572b5687e90b0cf444e7485edcae15099581d0b4ab3e2314c","273fad7d4f4c106c3cfce2645d2e6aca2141a714b8497cda47479d135e743539","074876e5af48d96d0d6d9e81ce25a19558e25253908f20045249767434090932","98471440b5800b6f11aaf2ec1afdcda1f8a073e6f1744b35ef6c89b422bca02d","caa2298dde80b58ba4650fdcd783ad7bb17f4b36c3eb0e2d080f1f7d22a9b4e7","63fe760c030e1655a16c2d483846165f3bdc19a9d51ec35beb8b3028e1ddd224","fb884b13c6c7b6fa45ec692f0cd19450269fcd13629216d89df8f4f8f28f63db","4030647c2ef4f8e3330609d1b1b8f3b58008674f60e870e605f772c875dc6aa9","3492e7b3aa9fff62b956cd07fc3f980ebe20033aec60bffc5a515ff87c949351","68889fd35b89925b8d265e65260618471cd9c2f5458718fde3d6cb3829d8f00f"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2513802575 · entry 108e9186e8c5677a9216…

Expected log hash

5899b5d0ea18fa3c879147333708054c2e3cd77662f2b6f633aa3b5d5512bbe5 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":"v1787121142818","kind":"published-quote","locale":"de","page":"product:acrobat/pdf-editor/de","quote":"the app title says you can edit PDFs","rating":1,"review_date":"2026-07-22","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 (80de158564b7…), 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.