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.

“Adobe Acrobat Reader ist ein hervorragendes Werkzeug, um PDF-Dateien zu lesen und zu bearbeiten.”
Google Play · 5/5 · 2025-02-06

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 2515345787

Proof data

Record hash (SHA-256): b1a9bd9c647d3dcaf0cc2203ad5ecffd1255091bee7b73ff754604977c2bac14
Signature (Ed25519, base64): DBpxGqjQE84RkV5qGjrdhEjVhvMfSAvsSC8W4T46koDZ8n2Alf8JLm55UwyFE/MZlri03ip9ZZ0PjxzagAcQAw==
Merkle root: e61c2598d4d03770603e24740bcc427581e87bcbeea2e56dc34fd81a9f496465
Merkle path: ["b1b07b94dbe57225e7903ced0237650fd36ab6c58cd5f1e8af6e650488155491","34bd22162e82808fb78a9dfccf52b3823547c8b5a19ba79dea5076b4ee4c33f6","774765fc7e4d3f4775d38dfd61409bc023be6902d0c2b9929487b4a1a4bb0a0c","8b0facfdb8bbcedc241edbc0ec73f06d2b620a6c0982e22ae11561c554b7e5d5","014641a5ed76cd6eccea9ee328793f77f779c63de5521fd3039b2c3ff4b3f076","619621e119b39c793af47f44646823309fc130b9bffaed32528872ff70244417","cead960ca007929deed826d5390bc027c298770630e3b10ddefce89f60f6ca15","e42ef527d4d415efe3d197099e6e70890b68427023ff7cb4293a7a6f6aeb32e0","6fac58c1f57b2be0f21e54fbf5f0b41986b861ccd5d04754fbb677174e82ff71","fe5f80793649e1496134d9b65bc2758742c7b1625d88b0d781aac65b7f059b71","84ba8f15925d05d0276d6fd156ab91c878704270377c199e1fc23e118b992660","a595c1417ae9bd1989503f2b6757e8e588e19605e3fcab40cacda5b07fe77a46","b27b4094565f0ca03603ebfc1ba563e714e2f591604e1f375155619236859cbc","f1950e4af29dd22cc94bc58ead6e376c41b02edc9ab0ebaff7fa6fa0f9bd3732","11a62e67a9d98d919358ca5b8855f911ccdc865f14b203213de31adc67657443"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515345787 · entry 108e9186e8c5677a749c…
Expected log hash: d9a90b5e7311041bf4315991ca7f2fbceee461daa2ae70a8b8b95323461a31cd 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":"v1787140356347","kind":"published-quote","locale":"de","page":"theme:acrobat/fit/de","quote":"Adobe Acrobat Reader ist ein hervorragendes Werkzeug, um PDF-Dateien zu lesen und zu bearbeiten.","rating":5,"review_date":"2025-02-06","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (e61c2598d4d0…), 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.