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.

“Dies ist eine großartige komplett kostenlose App.”

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 2582656976

Proof data

Record hash (SHA-256)

059d0adbf3f6f0c41f879e081f85a148cf59d0a44d4906f48d32840438e2a3b5

Signature (Ed25519, base64)

9zqemgoZiz0gSfbpQQ/Cos9EWU9bbJ/wG5gkKuTxl8z7hYDKFPmv0eI8hUe+NixH3lpXWsNEjTMHZdrOzczVAQ==

Merkle root

a4c18639252762e8592e52699d716003f75d0f7e56e7fa6339035d798c5faa4c

Merkle path

["0598baaa11b32cea6020da04353c16d20f20d626248b141fedb796e2de6e89a7","eeffa6dbf8e35153ebf011d79701613799919b3393433a370cca1593b379e928","c54105f7f856b5278765c5d10673d395b7e1cfb5905c0255a62f9ba034f0b153","62182b277e2eb0fb2088eb80c7db3c9566d6a0ddac0056e4cb9845048f496af2","0fdab946f8dc5d4bebff5a8e4b8b42c5a873cb9fcf3a2108ce668a2f8660ee0f","541d559c86ee5617d02ea902deed798567e289f33d787e61b9d3161e5bc4ce84","453402e6f21f736c40c941bef035a22804c5698eb69691732d0c189cbc04d63e","3bb2f4a3906b39f3362462969e8aab81db8984fe31c9e2b1b458095a0467f9b6","dc5fe59e04bf34d309acab07cdb3b833d361041b972479d358474d1b811a81e2","74267ebdc1f820b4b7c03137c23ff20cb355e390f59f7d4f770bf684235fac9f","0b173c715a5f3084889c2022194fb83eb9ec0c3d79187995f69b3443609b5cef","ea39482b5a7e0d45d9fb3ae639170732241133dd31b00e5a83bcb03533f8d238","a54fc815eb1b1840822e4a876caf80ed05f30705f1d63949cf36ecaf8a968901","991436b9578e675394ec672133d1c374d83d4a1e2c908b8f139d4d517c2af4b3","38817b8565345ec373a63f174b7c8fd25668576b72ed4022ed922334dd0dbde5"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582656976 · entry 108e9186e8c5677a65b0…

Expected log hash

918fc3881cd55f75123813e7996add0afe4b7e68bfa1a75328681c18d541d464 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":"v1787629605596","kind":"published-quote","locale":"de","page":"brand:meteomatics","quote":"Dies ist eine großartige komplett kostenlose App.","rating":5,"review_date":"2026-02-18","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.meteomatics.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 (a4c186392527…), 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.