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.

“mein bruder hat mir diese app gezeigt”
Google Play · 5/5 · 2026-09-13

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 2907673729

Proof data

Record hash (SHA-256): 9660754affd9e6df87e7f303adb4d8df6df02ba6089fcf5b3e3a36e0eca6d3c6
Signature (Ed25519, base64): pqBok33eL6YXhms22thOYgNuuyTnb3sdibK5BAWNhVdEYM95cxsMZTBUdT+HItf/Gl0tOBRZy3jHB7EN7VvPBg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["96631c83a3cfc45e07be5ec75effe168f5c31664adb192b3fbc9f0abbade659e","c2e523bbea0ab26537afda363dd9ec4385e3b484b21ed036245d94e2a6bbf174","ca0c38e4b344cc8261ab13f33ea3b543a13c7e06e331acd42c96cb8cda99a4c7","2fa4c16baf51983176a016c24fd032e86dec34b9b408d0a0d3b4a56931345bff","4ed42a6e7777efc2d8e5036d409b078a144699c1c1925038c05a776038b1904a","aff27bc62341f775bc47219c2cf6882e4edb1c50777750e78d4ce93d06b273f8","102437016f97ed7ab5bb97d5c5d98ee774f7f00951a85399e7545c17870bd3ce","b875df8080625e5ba2b039063488ebfe1f20f4d7159a8789fd0dda243f4b2cb7","8c6336991436b2e0b5843ba837b459328a5bdbe47e12aefbd1853b1182f7d24c","b02987b8805ff97881bf8bd02156f427a4bf028280e5bc4b4f89b2e8d8e3f784","bf77cba02c08849fc4a9dd414e0e15c17e1f6b56a0b9c25793199682cc31bfad","86f8c9575acc759d5eac58ad776858ebdacefb73351960cc2bdae6ffdcc2483e","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/quality/de","quote":"mein bruder hat mir diese app gezeigt","rating":5,"review_date":"2026-09-13","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 (b9a08f9d6d76…), 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.