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.

“Leider weniger Fachbücher, die es in anderen Apps gibt.”

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 2514496096

Proof data

Record hash (SHA-256)

fff8ed7354593f54c5d525465192ac5c8f642cab4fcb2a6a4449dbd09d48eef7

Signature (Ed25519, base64)

vcRhySTqb6lxijHYnxxbmimav6J7LNprguc2ZVtzXQhF/2RpiLHNeTa5VA67ayiJKxCS0I5wXjO1HlBG4rirCw==

Merkle root

790984da83ec061260aa072fed7636f9dedf91964fe0be93d7a7a622b2b5a92c

Merkle path

["fff6453da6d0da27ee1ef9d43c6f8eb4a64d6730227266665ff08c936f529ee1","22f20d7ab3c513d18cf48347a09a7693b09384697d76f4b176d495961bbf5e3b","15efdb9f2ee3b02212b31ba535e4f1ec82fca3e0cbc47f842268c24d51e3fa91","fff9e8d8a455763d895d7f24a16b6dd3c618f7a295713dee388f5768b8ef2698","0a1267b47fca26274d67a3a27193fb2db2287dccc747cd04d373ed0937e255bc","f1578a257c0199e596be42b5213e4f7ffae432915ba30ab10190fb0e15409c24","d5fb207a86b67b647b13f29b7817b4ca8d0241be4e86434e7b18639faeaab51a","dc8f49957482e303ad0043626560f6792c77797b3e643ce8938269072f5b5989","f5462a340e729f67917c14af332de1a35212c814f3540ba892394083b7958e11"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514496096 · entry 108e9186e8c5677aad27…

Expected log hash

5d2238ef768473286d75355f523ab94503f4ccd3d25e17e9efb265aa0f540183 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":"v1787129810322","kind":"published-quote","locale":"de","page":"theme:storytel/material/de","quote":"Leider weniger Fachbücher, die es in anderen Apps gibt.","rating":4,"review_date":"2025-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=grit.storytel.app","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 (790984da83ec…), 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.