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.

“Sehr übersichtliche App”
Google Play · 5/5 · 2026-06-01

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 3139760477

Proof data

Record hash (SHA-256): 02ba759f20891138f86e0ca81a21d3c94005507c8f71b52a6cf2043e1efedf5c
Signature (Ed25519, base64): sJ8+kCM/sWtaIaYIk7YHDje2dW9PH5d4N9Fs9HZZA4Tk3oZbZeoCW7yKQQy08LXn6eGH0YtAsni4TfcUDkhCBg==
Merkle root: 49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2
Merkle path: ["02b92dae0a826709f23b58a5fff506c6e5258117e22ecbe03f9a6d94b26bae40","7db5e2241506b723cba2f8baa406b07af7f5381d937bcbc0b47ecad251f140f0","8e4ca304802ba6b3cf1eba4b6bd553b9a1d96ee27a0bcff4117a539726500f70","ab7e4a77476069396bc527b2746dffd40513c91e46beca2205b2afcc8625fb38","4f43b69d5510c74833aac8b64644ae846e0d7d3e1e8e3606c2c4a2806899b6ca","053eea64bebfbeb1bb4f61ca231de9b652d99ff9c8ace3b60cf2f4c6c3cb4a2a","2157a1ae029c731bf74dea62417040f5cf6c701e975d7a414fef3e79299b2652","9598c03c85ad379743d52385999b1434f8fa38d8b52c9ba85839c5df258a0684","63b79021cc5131441bafd88e11cffd89b3f28c33f1321bd0a13dbf2bdfa38c65","d9a80395b1cba14f1c03361add65352d4fee29c609df36f5be349c9e2b6b5787","c5d93b1569fff12a05db8575101d33a910e764447ea663fbc03c9ce9ca3f1b89","1cacba8ded6d3fe4021b99b9ea0c9858548477a47eb1dfa6995591887eea7442","da05ecf7377d5697c026f830a74de1a09359f7b60612fb722c789caa15cbbf29","90889d6ebe241f2d2f9092870d002ba795f7d27137f7582a09b4369ab1517327","d81f506ca96dea712a8b56759200b270fc625cf496d323ded3475eaafeb2d916"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3139760477 · entry 108e9186e8c5677ac88a…
Expected log hash: d54b6e5e20903e9be29e6a5973227ee9b3dbe61bdc0fa6481a5788472cd5976c 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":"v1791428432986","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Sehr übersichtliche App","rating":5,"review_date":"2026-06-01","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 (49133e6803d2…), 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.