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.

“zum Speichern muss man ein Probe-Abo abschließen”

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 2543383844

Proof data

Record hash (SHA-256)

163ebed332e43783e5fd506bc8cf6f82e5214ac59cb5a71bd964f74249e57b9b

Signature (Ed25519, base64)

vrEW38FpmfQISfI34uwLBkge2XZCA+gzsR9Tw6dwERLsLedr1X6xUXFn9uusRTIcqcybtfyDWC2C6Cw+3qF2BQ==

Merkle root

7252afe559009950531df937e7edc9bd1c57cf28a24ed7f6c6613b65f459eae4

Merkle path

["163f8b0bc80b5fe65ddc1d8c082c8f9f23f27ce05de1629c6c84a58cdde8be93","9f0f86f5fdef0fe98a7998d6bcba51a0df87a822f900bca2957b012c504197c0","23fb29d90e0645489df55541ffe352c1d2ac10d6cbe230e08eada3b952c87724","de3823ee24a83e0fc713880a28eef1066244d9deb281279f3c71dccf2b2b61b7","cbb398b665eec46081507984c9500fbe8a117b861a1a2b15860559ed692aeac4","65f97c3cbaf77d3a2c2573700a91c1277cae082886545f2256a8cb6221d0848e","e0d299222347f7909ec42b1ef4389a429252fcf52547fa46d87de8a981e2d875","a4d2c859cc876a133e8284ead2afb9f18b8af3194352fb53abef181f0574ba80","766adc72a811dd6365c811369090e2a71cda64b12b39c279fe3f12abe2552091","33bf9922a746b3d007bc086a0bef8d27e4db19b5730cce5f1c9139448d34ea07","8d17c08c7711319c999b464f30d12b1a0e098d87458c0bc9868549fb624f3d8d","c69b424a84e94872a676419ad19a2feff57fb7366d35445d20904831f9dae37d","5b655ce1c6b3a6040c73fe70cee1f73a87a67aa56ed97040e7fd88f9c78d3e1e","6ca0e672260f8a36160629905eaed49c49821fe80001f9ea932f048c0563803c","b3900b15a2a9b7aa805b691ce86e29db39e03d547238a84a3c0fff4fc2daa54a"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543383844 · entry 108e9186e8c5677a6025…

Expected log hash

65212d488cd7bdd0d67aebdd70bfc57f4b622fa08b8179427635d69eb7ec385b 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":"v1787285599851","kind":"published-quote","locale":"de","page":"product:acrobat/pdf-editor/de","quote":"zum Speichern muss man ein Probe-Abo abschließen","rating":1,"review_date":"2026-07-08","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 (7252afe55900…), 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.