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.

“es ist echt step by step erklärt”

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 3248278454

Proof data

Record hash (SHA-256)

831bc0e4557e23431a696faf967bc96616f4d388f4cca8011591c1dcacb6a991

Signature (Ed25519, base64)

GkuVz45tpbxWHfP93NVSrD2SbcpkO74mfWFMUBg618G18wJ5l1SN/5xvo2/1TUoN0s/BAcV2Jl0uEMasKMCZAw==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["8309b31f9dd79e44e9b48d33990531fcb725adf14839a3e1aa10ab67d23b9334","27eea8fed13fa8c94409612ac852e7fa5237958b8c998e34c2d9fc327136d361","f1f005fc43324da9daad41e6a2b0ccfe6ce036639bd67197d617215da9a768e9","bd2ba7f715e0efa7eb5726fffbbf3da6563a38ee4977c41d5662f7d7315ac98f","6ee8df879ff808a82eb75eda92c799dbc692f038dd2478d1d56c60d5b0aa3e0d","d904ce01403c9059ec82b82439fc4c124dbd17bcb8d4a73ff55ccf35cc5ba4e3","efa482460ce5e0e3c4d5ce79bfb06d25aee26e1c85740594188f9283a0070109","7c7522e2aeda783b890dc2eb2c3e12a55636f758d5111eecc81bdd23063d3bdb","88f9cd2821f643d0990e5381ac47ba5aa1fedf50809fa7695863a18ee7d3f2ee","702edb27525dace5db3b37476bd74959ae495102c80e071fc2ca47b68de97c7e","d5672bbb31e3bcb7edcc920562704d162edd377dd0f14ddd0a409a526cbf8eaa","cecda8cf59675307c2097f3c9b95f70464ca6c0cc9dde9f98213537f2b0274b5","9fcda85d8e37e19a15f376a43900980403d080527146762503d0fea51bd87692","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"de","page":"brand:zasta","quote":"es ist echt step by step erklärt","rating":5,"review_date":"2026-09-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (81db1abd6b6e…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.