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.

“funktioniert einwandfrei”
Google Play · 5/5 · 2026-05-11

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 2524617489

Proof data

Record hash (SHA-256): 71794ed60558a1df68c1d02622d7e765a9f293645ad0e0af89c468540c70b279
Signature (Ed25519, base64): VX0TjkSO6+53Gv+AOVLLpKFypqEyOuWI0ir7YPB+/nOiNZDAGcu2fNbw0HUq4HexBTWTPUWRi0mOeJSFbKQYBQ==
Merkle root: 5c4849a28e8624d6f6d3204e1f81a6b24f2188b6690e8b122801054617ca25d8
Merkle path: ["717b7895def73ca73532ed95f264802f9fc88b804a159c6382f2e53e4fb5ab8d","f5574044fd813938acec9e29e3130d660818bd48b1ac101242c16d157ec89a64","0304e15fdda8c888180f493a9be453b4faec95cb4ddbde77e401cf8c5033c099","38a2badab19175850b69169ce3aa1bab6d42881f30ecb38bc3d9ad306359928e","72d1b4364e6c10101b2bfc1099f2b15804c21cc7cb348053e4297b97a232dc19","a0332aa90e42e5a82750f850c1315bac184dea6750b5b256cad1ec0cbe8137d0","bdaa7a105692e7b03ae0a23b7fa27a046a5b86c4e0977f9ee2d88084d4b156e9","5b46f843714e05938e05724dd678f8cd38a17d5d2bd694780a5efd17e7d2dae6","cafcc5ee24cf05729a7447d56dffda4e7dd8f0944d3a3f867019d9219613c028","631421dfffad9ad65176e41f3d9758f86cf4a8b4d820266c44b03761e872d59c","4c8f59ec1b814dcbf07fb8741f87a9ed66d6aa4aaba6a04ca48cafbfbd129147","fc20be6e5212984ffdecdd4ca27b36dbf213d6ac99468aef6ed7ad21291b9926","12f96ca4240540bfe75bf803cb42df83a15718abf65320073fe2c2d7c1da740e","855df8175222f9db398f9629c729494a6b2f86ecb26c7fc54bbd061fab2ad520","649f189ed3a422a3ffceae7f7673f3e683a1fac940fd27a4d89bce585dd48e49"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2524617489 · entry 108e9186e8c5677ab139…
Expected log hash: 2051fcd76f2ba790414bb1c15fd4d3d064889742ea46f8e55b5028f1f571c27b 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":"v1787193158162","kind":"published-quote","locale":"de","page":"theme:xodo/quality/de","quote":"funktioniert einwandfrei","rating":5,"review_date":"2026-05-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (5c4849a28e86…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.