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.

“Service, Mitgliedschaft und Bedienung ist undurchsichtig.”

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 2543978942

Proof data

Record hash (SHA-256)

72f6d651df7aaa9ca36cffc7eecd3eba59a8eb559cdd366440f286b4b0aa453b

Signature (Ed25519, base64)

npks56hKqaxi+DhCuFtY93E+C2du605oYz/fnZZXPDU2PNmz6aFUF5ixVdO6w4JEBsM4fTTHpwkjn+Z8ffQ1Dg==

Merkle root

3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a

Merkle path

["72f7e35a8b408af5d992f2b39689c474a28f3012cf37c634d2e281b2c65a7622","4cda6a0bdc7f536e04ea90549747979d7acadb07712ee231fe10acb187e76c4d","4f40c7164d159bd8f9a398bf53a518915c7c5b03dac839e7ef1bf1ada6cc57ea","5115cebf9f83a0e125c58223dc0d5f532d4a340a1ef44ec6199e7d5dfa4b6313","6c32c05983e66ebb8fc02e35b1a2430530ed3bc0d9f3636d14d7c444d386f761","0922f0d4b845ebe5aec2693e69a5cb1c7fd40988cee100b680a45c7fb2846d5b","e620b0bdbd6c0c59d109df3eb961b085efa2e19c404e820e3fa4b7853e195c9b","23006802754cad7a969902bdf87cb860f2ed306c8c5d4dc7e196be2c8a5d90ae","fc00531ea2e7a69ef0ddd4466dafff4f6a31a1e2d3e2729ef37dbded7ad999f6","13e47e7f12f750f670b690bd08d398b66cb6f7c737aa320697827e4ddedaaffb","cfb18ddab612a7d59b52d04ad166265eb2f8873f845be3933be85a5f51614dc6","4b61e0ec42d19f86b24664c45aeb415bcdc17f750f06fa8c661a8baaf980e7d3","0ead555428295332ed003e76021a0f41139c28278eb5ac0da90eb0f864c2f749","d8ed3a5c7d4cd902063782d2b816101a433fa513967f9352f92e3b3b0172862c","331ffac0f34e1f76cacd782a04285f7bacef5f5dffbd1f8163703fce9b22280d"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…

Expected log hash

69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"de","page":"product:acrobat/merge-pdf/de","quote":"Service, Mitgliedschaft und Bedienung ist undurchsichtig.","rating":4,"review_date":"2026-01-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (3ea09355a1b2…), 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.