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.

“Sehr gute Wettervorhersage.”
Google Play · 5/5 · 2026-08-03

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 2647504463

Proof data

Record hash (SHA-256): 0b193f193010cc9754ae1e9639170640db53850528e8f02da6ca2b3df80e63bf
Signature (Ed25519, base64): 9ADt+VjywTP2YmD39UDilJlRZmFzRJUMS8BMt3tRK7SyZ8tZRiCaa97IW6qzAHymjyoOPJL9/HDsLut5zvRoAw==
Merkle root: fbbe54686ff192def9dac89bdc2006ad47a493d00db3b3a9ff43e3b123308061
Merkle path: ["0b154610b431a1ad4ec4a24aa6a94fde48bc493de97cc1020d5a54ec20360487","7fe4af77aa67b0c172093cd1b6bc95388c1088e8f6e0d26b7bca34a6f4fa776c","08ad6ff5f846eabcbca5974bec8d9a738ada09d5c1cde32d0894adeeeec33f5b","a6de970a1b9066c3ca11c6d80dfc766e3fd6d10a9d21634c4fa5a0bb749bece4","45ffbb5697c45efd6a0669821ea20fd904dd5438789a3fe7fb44b2f39297eae2","9d45c308d31fce7a1e0b6ce06e174d2c5ea791d4aad3255761dab352437a35fe","bb6f9a86d77fb2f0e467c9014d40266158979cbd26e3f4189e9e306749ae05d4","80f0111aedb6a9937a7525c084df00f434019ca4a1b294d0506462adf4214e88","f6e3c428dedde8e5d9060163888fd340538625026a132fd12bf65afb082dfae1","8b84666fa1d40da1ed912de4561b19eec3f12ea1525a0dc1aa884beabc6fcbb6","038baee668e0b41961ae31c6eb9cbd80e2f8e2c6516c288f842eb314a3ad44c6","81209070664570597e8bf61666e34f9722287e281f0452904740719a0e227776","625eca1bb9e6a91dfa6035d766ca1bb6ab8a6b58b95ce694996f607f2e15cc42","924cd389915044788bccd2a79bfcfb29ab0fa44adbc43b1e7877ad3c03c87c9f","910ae6498c24b3e218a7772cda41516322afe32b5ccc8489f6bd972bc23cc14e"]
Anchored: 2026-08-30
Public log entry: search.sigstore.dev, log index 2647504463 · entry 108e9186e8c5677ab12e…
Expected log hash: 3bc4a58498687620ad93cc1fb735b54a6af64886697db4c643becfe466e70236 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":"v1788063157670","kind":"published-quote","locale":"de","page":"subtheme:meteomatics/quality/datenverlaesslichkeit/de","quote":"Sehr gute Wettervorhersage.","rating":5,"review_date":"2026-08-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.meteomatics.app","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 (fbbe54686ff1…), 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.