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.

“dokument nicht bearbeitbar”

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 2525010456

Proof data

Record hash (SHA-256)

19856fabff80ccbd0a718540b3c123ac673c6450aee25db3b95db666007565c9

Signature (Ed25519, base64)

9EKnU3d+wf/vpo5ASgHXBRkPw5oNd57R/2+Sx7+HP0ZRFOmawgpbUjdFgQBbxZCOBoCagd5wXUpmE09kd5NsBQ==

Merkle root

c69b412346f0db8d88aed17dbaf2e4876a3743c1c4d16fb306ba56b5c0573123

Merkle path

["197c01038c1ab19d117de27f9014c10e4b384b007f66d6d864819478131d68f6","190e2e18e08f9eabf53350beaa5d4f53e7facc07fc96b8ead0d4667d1216e43e","7de39be7efde473b0ceff8ffd529b9db7584f6d1d432affaa0b45b90ee3f123e","0d9b3de335cb12b481136ebdf2386cd399a805b7c19e125d1ff5cea7fa98af78","f5464451c6cbab61a34c433e37e29a061550da03f5c19ff1c716b7fdb9934f98","431fd11afadd213ce3477c391ab626a5c300646131053f85e890c01cc561d796","e1a1821f3dfc04d41b9d65729e870fa679992e6312fc54e1e119d7a5efe2c93b","aa4373f5678ebc182c4d66f14fac8e9cb6e846aa8b02ad058e79c083e00bfc27","aa14c38ed3b3f6508500c8866d84301670fbbb31c2a347e2487c3aa9555ecfd0","daa6418042135fb62ed892d7e04e829c44c2091f18a527ad3c3dc54fe77d7c66","9117844400e1f8b2cc2bf8b61c02c1490bcd3a7ccfee77c3bbf757588aed0393","721459d5ed2b625225b644c6314b3b4b68ccd1ec7d9cbfa0502a712e52e833b9","09997fd9b1ef8c57766815e6c9849e05f2447cb27e8d805273108da18c60273d","62927e8f71080777dd1935c21221e60b742dc0377a31e2f20a0a64cf6c3282e8","3da38b679e2392986aef224a332d14750fb3a22c4e75287765e8f68f575f24f3"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2525010456 · entry 108e9186e8c5677a4287…

Expected log hash

659be4fcc7663b2dc65a53351e16497fea44ed9ec8aef1f3c48c8e452b350dc6 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":"v1787194832011","kind":"published-quote","locale":"de","page":"theme:acrobat/quality/de","quote":"dokument nicht bearbeitbar","rating":1,"review_date":"2026-08-12","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 (c69b412346f0…), 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.