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 2680681799

Proof data

Record hash (SHA-256): 331ffe185bf67861788e40eddc6e8fb9903589cd1c692da20d54d863e393ac72
Signature (Ed25519, base64): kc7cSfS3PX/j+qUiHSJNI7KfLN+D8N4RTS8jrujzJy0/nTYVAqpvbUbOfRRzPxmpEcecHbA5FNreyTNbXik2DA==
Merkle root: e880a518ba68bfe85ddff87a241b258528b2896d8ce031c201c4697c0b7d2205
Merkle path: ["331fb3647ced3183ed4e75504146718b77d77436fcfb668a8710d43546a6c890","1e88a666382944fe2515b286e8c3d30e0bc7865bb3cfd87f99b9211ab9b1ed29","f16c5b839288382c916a80fcd479a0ac6409cb6512b459992c01446c05324f10","4d4ff9633c47bae4fc2ea3caca8bd669791ae521f70d3834060e42089869b416","ffac1e24db2b638de9f42d404d2d0afabfdd6421f027b4142d54664facf5c20f","b22dba6f6ff75ec7aa2152dc4ef1c48d0247ebb67553cf8adb1f62163b7b5eea","4302f11fe62a8db8582af5e2ec999daa884ebf182436b0ef27be7dd8702ea3d0","adc187c96d63568866aa9d8dc97a0461612f3de4b3341055235d1aa1dc77fea2","aafd2a6b6f04dea5aab2594a926e460eb2fd2599579ce6466497b9c9bb2173c1","67d997c199efb965ba6bcd0f8beb57e674c4bc163dabb451e8b02f367cab667a","efb95eb1a5466d5b3893dd907a826faf41d3bcd3bc0b57ada7634d8a44095f8c","8a435733d6ec9ef6acef1a68a8abeca4856d0cf9144e380af029c4d42de078d0","b82cd14df0b3d85584df275a944fbf2d2903869ea29e988f14fdc663ca4113b4","8c997d59f41540bab49c6414578aed00ec9a73fd31959523b43a0af5a2eb1e86","269c643459740a67a842bbee9fda4a35b5098a4f015e508a69431212a0912770"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2680681799 · entry 108e9186e8c5677adf7a…
Expected log hash: 23ab6878cbb153d06d6958de44ea3fafe32bd61b03ba95bcd26de9e09248aedb 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":"v1788297623062","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 (e880a518ba68…), 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.