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.

“grundlegende und häufig benötigte Funktionen zur Bearbeitung kostenpflichtig”

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 2514967984

Proof data

Record hash (SHA-256)

5769fdce84fb3d8a53f0236e70937967ab83c871426ff45f5f7bdb0f2fb44580

Signature (Ed25519, base64)

ydAq2eDrTyj1Y6mzXav14hqDTTUFMEtQfYjXGEPhuQd7DZsYWB3xpB7ylp5QbibXakS8012V3bXOokMo71tZDg==

Merkle root

9ddf6b9053b6e5e7a2f15ee7f3bfc8dfb72c48a1917ae5b7e553033e3ded6523

Merkle path

["5762f06db29a6efff6ad5ac8c12bed7a49849fd7b0449c965445595de6d6bfe7","5ad4a7035290ddc14424a0b06654ca4d3fcfddcb2a42ee17d74a61a22f8a5b81","8dffafe3c39590628b59ba7124358559f22a8c3514f4872c2ff8e91f224d8bcd","de4d804c3ec1676b6a0ae8ac8ead0a69e47c7b8ed598775133b8d60c7290912d","bce7ba7193d35d315d2360e4a6631f56366abf60b3c4b54fb6e4130fe1533767","67e78ec76faccb4b4ec2d58bc0565751c27bdb3d2415dd6ed31b3070db5c610d","57d30917734910c32eb2cd4d4d6d6082b1e58a3fa8d462f176287f3a147cabc3","62b044d87d843af73717d2c7aaad7a36638e2a698e603cf32a6b0f6069a3c567","10a31495064dce5fe6ef5ce0f92331328ce270fb96a0d4e2a60e2b202594b026","27a0c2d9b9eea07d956f95260cba2286115c34db9c56c03e408524534bb9aca2","9b1ae7f3f5ccbfb2f516603d2d903d883ed049caa63b850ad8744d2ed4b17964","e39efe337337c634e3dacb9a23670d0458f4eb721f72131647e61d7f82cd2d60","4e55fbf7ae63bc538398b4fed1ca658ea06c5c93c0235f9de3c90ed09829d3d0","a4308f946a16111c9d609738b93b2f2ae813ce88e33e490f89cf33e3a52e64d3","50c4eca268fbb41f8c6bc36d8a5d1b6cc09733d96f0fb33e6cb584096c56f695"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514967984 · entry 108e9186e8c5677a902c…

Expected log hash

be0cb34bbab326d10b25013c37c9294b14554a6c6e9fac3dc68c06dc2c3c60e7 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":"v1787135269737","kind":"published-quote","locale":"de","page":"product:xodo/pdf-editor/de","quote":"grundlegende und häufig benötigte Funktionen zur Bearbeitung kostenpflichtig","rating":1,"review_date":"2025-12-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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 (9ddf6b9053b6…), 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.