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.

“nothing changes even after the update”
Google Play · 5/5 · 2026-08-01

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 2543978942

Proof data

Record hash (SHA-256): ffc350e7b10214044af4bced799409a577c38edf571584b81072cec59d3ff920
Signature (Ed25519, base64): RqpbMTrapDMu+iR90uqpSNh445xje55Zc836jxRf0ZptXfZoHwlD6PSbHuzGPdfCdhWeozee2Bh9/MJSxX1oCg==
Merkle root: 3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a
Merkle path: ["ffc280365b7c1fa9ca4dbc739fbb6afa88757ef49c07833a23870c9a98487c7c","2cf5e9aca3531f49b7b1ac99a840ce67fcc294e04b586619cdfdaa287f470130","10f529d6252368aa558c6206df204dc2b019abe03f32ed9aef8a5a8d713b6b5e","19fdf53202ef91af87037d73e9f79e4ced4e1b4903299655ffcd1c740f0e5f89","00160b9eccc21f0adbd29bca881872579cc51b2d6611ccfaee328c1abe5fa278","10aa8018c1954f97035ac34ce19dee4577ed3c54aaa6b019c08356039d482a91","397c92eef69b9e47d7fbadff929538a7f6cd880527b453bdcc1ce12396ba0c64","bd74c618557de25ec48e8591fcb23a499aec90e8f3e95c31dc0b8bf999a35f6c","31b27d31453717be4b35465835a52677998e5ec26db9ffb6e6ac69f499b4f301","6feab94c81a1437955b6797fd4681576369ed8a023c1b93de928b749fad6f29c","246f8342235410c48ceee34de37199612052ca8bfc8a05e2509de9ef8e0e7796"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…
Expected log hash: 69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"de","page":"brand:luminpdf","quote":"nothing changes even after the update","rating":5,"review_date":"2026-08-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.luminpdfapp","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 (3ea09355a1b2…), 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.