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.

“hat mein PDF in kompletten Unsinn verwandelt”

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 3139760477

Proof data

Record hash (SHA-256)

05247910a443abd34e18b36ad37c43570efaff6faf56b722400845563acd89bb

Signature (Ed25519, base64)

pmMzNifRvVA1qUnH9V5u4k1Aqy72QrdxJSashx6obOGnqiR05HNHyimeG6MGhfkLVd0qMTxjnMAJGY8KItk3BA==

Merkle root

49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2

Merkle path

["051ec41ad58095f06dd2859c6203c0a2dcad7ad281a2de98c4f6cd9c66263124","5fd8a93629e60e237c97347d4f0d6c25d94dab4adb0f41be3035f45c48dc8c8b","9d2b0ebb758323632cd37b90b042b2d7d860fdf167f89d6cfc3c9ae45ea071a1","da0c34fe4343267a44ce6ee48775c97b0f15b05b542d8c73fe640fda45bab5a5","b2dc36542c8511f78d643ba6f92baf8f516ef218d412d6e9cbb3781b1f53d690","a1de3f2e2ce5f4e0d71840839490627f9bccc7762fa54d8dd47dd95dfd14221e","9cc37292cc894731bc5259c047d763c329d605221ea7c9bd985d79bad7b49d6b","7eb714797b8d968100e379a0a634747f7731a7df196fcd8d1a42af547bcbf5c5","e079be44c1d836441fc72903d93bb382781a98201f08d79675bcf613b5160f37","d9a80395b1cba14f1c03361add65352d4fee29c609df36f5be349c9e2b6b5787","c5d93b1569fff12a05db8575101d33a910e764447ea663fbc03c9ce9ca3f1b89","1cacba8ded6d3fe4021b99b9ea0c9858548477a47eb1dfa6995591887eea7442","da05ecf7377d5697c026f830a74de1a09359f7b60612fb722c789caa15cbbf29","90889d6ebe241f2d2f9092870d002ba795f7d27137f7582a09b4369ab1517327","d81f506ca96dea712a8b56759200b270fc625cf496d323ded3475eaafeb2d916"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3139760477 · entry 108e9186e8c5677ac88a…

Expected log hash

d54b6e5e20903e9be29e6a5973227ee9b3dbe61bdc0fa6481a5788472cd5976c 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":"v1791428432986","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"hat mein PDF in kompletten Unsinn verwandelt","rating":1,"review_date":"2026-07-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (49133e6803d2…), 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.