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.

“super guter service”

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 2948162176

Proof data

Record hash (SHA-256)

c1ef4fe0f8c4504be651c10a360f5153201ddeeaea45b7b3ab1257c8cd2df321

Signature (Ed25519, base64)

CfrKS05mITD5lBCvwBqu1HOx29JGyHRkwB+yWpuh//jUEkI6JfO+PNYYbbA0BkaSYt82hauz1jljommpHtRBCA==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["c1eea315265bedf0ff91c6e8e8ceab4e96c3b68685d4a43c8f058956d1e7f434","5b06e504d46fb93f1e50d91c16e48705c81e1035d2d727ae864dec3cbb7816a3","759d760ac3c85d12288174cb414f3ea348503af5642c039f18ecc4f830494bd6","29da02e34628299583d81743f02abac5a2daf60d7783f2dceb17db10ba215979","a0741d347952b6ed3008456f440b24c0cff03545c841c041f5942148c05d4b7d","676ecf7e609577a06f4ffb6cab8fcf5d2978e9f67fd588c4895789351002468c","b9ef5d26b126ede55142cce5e316725b057b96d58246588aeb7c1e74c94d6064","db6963261f1388e507daee43789945f9ebb236955c0c2254a60900e603c753a1","d11b1fa33e699d521826879a2742869f7fc2761db9bce1e6d8bf2ea4824c5abb","4a1378f1a9ae041643227fd2efc542fe33d9da546ddf5cc368616f3063a75292","a0c895b31ca62e01e1f7a54d72e314d8adf4bb80cc0dd8de7fe86f0a4ba9762c","0a9a33c75948420bc9c46c8097da1b06f4fe152fd5716276fa9112799a085a6f","108f3d171e4ec3a22d208fe56e34b1a576bfa9e9f8a046f3c09e78ff42b08593","468adf75cd56eeaa89e39f50b974b405db9921529d680bbe88ff0d1caae6f316","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]

Anchored

2026-09-25

Public log entry

search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…

Expected log hash

5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"de","page":"theme:zasta/service/de","quote":"super guter service","rating":5,"review_date":"2026-09-17","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 (539721061967…), 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.