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 3258071454

Proof data

Record hash (SHA-256)

0dca0b40d3c19a5474469fc3a6d3800f9981502199c3bd0a9625575c00342359

Signature (Ed25519, base64)

dur6TUA6rdmP52Jtn4LEinOcBosxBCFO30/QYEs8e5rWdLCk+QICixe2JegCt1PWX/S+Jp0PuLuaEz5lW9FDDA==

Merkle root

3286418fc06d25de584969d1d1d5f4b079918bf6b5a5178364cae8b78bb351b2

Merkle path

["0db5f49d9bf545c9c3b6fcfe261ac38dbf63b28a01372181e04c93476570d4b7","b41dde55dbf1ac58ed300db665412c099816adf0310e44f813ffcd575aa996e7","1373549c43050d3b6afe3c8f6fb5180d707dab34e1fa37c3f1fb7d5677b073e1","e69e8f9d26e9fe44efcab576f68c724c33a0edff4a0b24f9166c024a5af4ba7f","17035adccc24aa86b55c1fd3f1ed2b47b313a798bd182c4cfb4cca89f3800367","15deea1d1aa9b67048ddf06a20ac2fe096ebb68f9ed0b89389bb88e061882ddb","baaf177a4f399d5fa59e464ec0ec44571aaedb311bdacd8bfa5ba50cebab78eb","a48c6427b5d2260ac3e15f819f132a2f6cb7a8ddd9ee38d5a9af2cbf72c9fd00","e8cce96b8cbc8a736af82337c9df4ba1c503afe965ac9f283adee8aa7c3ec17d","68d094d935a776853d351bd8b2d015b0360b21ecf82fe1a792eb4b0a2ccdba45","494224fbb45fd428f77fcc9951207b1e46e2d1ab087e71efa7665425c9a98e92","49e05cfef927266c6a609e22c205c5fdf538ab222e94c5e3282700418f88dfb5","d9800b1b87d047478eeb89f8a1dda19593d3b273c40fa6d591a1b944763f5e83","b4d8773b8032d1dec9dc6fa4ba1d52baf4d9efac6a7cb542ab0617b855dc5284"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258071454 · entry 108e9186e8c5677ae2ee…

Expected log hash

f9026b3bdc4a2e986a01140b2370b0ce9ec3e7c9353055dd7c9909c6a9941809 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":"v1792030101458","kind":"published-quote","locale":"de","page":"brand:acrobat","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 (3286418fc06d…), 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.