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.

“Glückwunsch an die Entwickler.”
Google Play · 5/5 · 2026-04-24

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 3081733041

Proof data

Record hash (SHA-256): 96a799b64bd1bc49dfd9feea8539611abddc329c8921d453a4388279e2022d2f
Signature (Ed25519, base64): 54yCszP/gmrPVUwBL4ZcODZcAwglfOIBD0bqlNHxoYw+0LcnUy3gcT6wBEdSryYdmfbOZTjfWuCI6G9cLV9SBg==
Merkle root: c5671f9a997da9b293a79ebe58b20e4534ae608121169f15a5adc358d42ed147
Merkle path: ["96a1416e16da71fd162825cfc8472b9bfff8e34c475e934073c98825a645731b","c5212dde69db2c12686e7926a825e43f17d4ef685d9631e7e5f7715a01ef8f61","89f1560ec13390cc0299b3af773efe9f0d82593ab69296998d3bce8c0156db2b","952a9f43fc65aa6a09962ed28b39abc5d3b4e0056237211aa46ab6e37df8bae9","eedddc31974e1ea6b176b3c332fa9c8ffcef5cb553b3f44f71a5f1780e1f5567","218b763328633c7614d218dd7b0e4c6872d161402620a32798917e4cb66f15e9","16d112b130dc62eaf4601f91cd618d3407d3ee33ecc273c2049a264748cbd45a","fad7cef4a71b474d4beaafdb94741d69650133cfcf72f6ddc7cc4931d1c229ac","b3d7aa1eedffeb526d84cd6260afa99beee1956f7e6f5989d7a3cdcfe2e0e814","7574303648e1ce0b8245ca89e950d0d641ac4d6ad259a4a9b5d6b664f4ef3a08","734e1711da882979f37e3d1b16461bad0936d6d394cac419716aafac9fb0c957","d4e0ac5bb16de2a0916ce1799093995b7589dc34158aec1facf4c87e262e7fe2","d2482c8c27b9666d395774cc0539a6ae5a22798c7dcc665c13e5aa68bbcb3778","8621becbd314bf961e51e6037fd253dfa12e66cb7b2d1c68d51addc52321e8a9","b178a1b83338c84f1a44bf8fe330ca4b62fad9df75daa4f4e38c0d04e336f831"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3081733041 · entry 108e9186e8c5677a0bbb…
Expected log hash: 88ab7ac46d4614551fa6e665889f054d7592b15d91016a45621b5c46a7ae8e2f 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":"v1791174108170","kind":"published-quote","locale":"de","page":"theme:vaia/communication/de","quote":"Glückwunsch an die Entwickler.","rating":5,"review_date":"2026-04-24","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (c5671f9a997d…), 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.