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 2525010456

Proof data

Record hash (SHA-256): 24a099b9a6a28d07e0226a1fa790b5ced623f767cfa911233e3f3eead410c489
Signature (Ed25519, base64): g6cRhsEMgj1/G9B3MrpDEgCufAi63gh8KOApGzFRcdXXyX6t1t6U6cNndlxD7hXjst77uNzYu8rgXCW2wlBIDA==
Merkle root: c69b412346f0db8d88aed17dbaf2e4876a3743c1c4d16fb306ba56b5c0573123
Merkle path: ["24a199f29d86c323fb64f6a9aa7fc2a5b033ad75eb0ddef3b4993cfd5619c767","f893903c401d9317248a772dab9b60faa92e99a1dfdd1f1f1ecedabea418665a","b1913d9cc615f0ad697778c40e899f5438f55845752ab7c161d36d9d716f018f","7119ae4ad90bb94621ccf2c1929083cd850b27d1ea7328ea3edf123c48eb912d","8e9f997b324949fb669146004b6f49d98b458c3b5be953b7531950325abf19f4","7b95326d48cc67fa0bf16fd31858f3c7b5b162d06e8f651671e72eb05ea162fb","157fb02e071bad3736842e2108ea26c57de43bdc7f9b06c86a24dc59c2254a58","7514ef0f5105e4f0a4b3e6e990b7a641a28036c1fea50f122f5afe8d84f8a479","391d55857b7b7f81dedac1782c5741aa4633d29b6b98bbec3bf117cefed4f94f","9052d5826fa6b2547e92dc97c50b7a644614b34927cd18b1057d422ea2b41843","d19145d4c3611b29441a175c5745d64aabf49ccfcbf6fea148b1e2a73371973b","721459d5ed2b625225b644c6314b3b4b68ccd1ec7d9cbfa0502a712e52e833b9","09997fd9b1ef8c57766815e6c9849e05f2447cb27e8d805273108da18c60273d","62927e8f71080777dd1935c21221e60b742dc0377a31e2f20a0a64cf6c3282e8","3da38b679e2392986aef224a332d14750fb3a22c4e75287765e8f68f575f24f3"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2525010456 · entry 108e9186e8c5677a4287…
Expected log hash: 659be4fcc7663b2dc65a53351e16497fea44ed9ec8aef1f3c48c8e452b350dc6 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":"v1787194832011","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 (c69b412346f0…), 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.