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.

“Man kann nur eine einzige PDF pro Tag erstellen.”

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 2621505474

Proof data

Record hash (SHA-256)

08b2b282f7d8f6614da6a445daa40aefc20811e96aa2ea4bd217359838970678

Signature (Ed25519, base64)

2GXlbgtwKc9c3I19+4iYZCj78RkARpycbXHHVOugvIM6ypOizKYqNB3i+1LR8CW64wXuSv4yeAfqFrjXgsdOCA==

Merkle root

d07487a7d8598747d5b143d9a16722ca7a83f5bd36bc79d5bf9130c2672dae41

Merkle path

["08b1dd27c6ad75f7642312287771cb423c3da47bf73e5f3a9a0f9a3a43d26677","8686878434ade9da8c3d361f2e773dc27624942fa5a4082c21b7b88d06b263a4","2ca86327d8844e7cc7eb4d00e218e1bdffe6429d856605adafb096736e3de812","376d370fef386afbf5ee996fa64474663fff77e3705c93659e51ebaf24fd65ff","9bb369150649896f242ac889eb00ee3a611b0d7c361158b329515c8da5ba058b","6817c447903f3afc07ffd02b893e8ec7a3720190054bc6f2b168c8da0da64ce2","7ec635a6482bc00fa43ccf99b2117e28eb35cf4217eb955d443556733f947175","7cb6d1efc8a35bdae2b9ad6c2a0d132e441ca60a4182e18c18d9565fcabdc71c","6fc331a5c7873b9cbc401ef23d70c467f7c08eb31601845574c92567b92feb1e","ad8bf15d9b7c6d81e14d912a86a64cd3bccfbf7b55c11ec8aefee72270d10057","6cdc6f101c275a381c25ee7c6393bcfd7ea6fb58256b219da2a01c59b46d7464","a0fdfe7690d005e054fb3a90a34d7cb5dfb00910c185dee375fbde390d3c55bd","884e6220e81a9d5982bd71d70ff9eeca2e340f53981f663fa0ca7490cce6445f","39aaf77ef5b3e4cffa994bd58b84219ff7133fe1d71c02bfd8ea2a47d2f7467b","fa743bec0c13730c5e9e6be51f1ac48c3e9e0953b18cdf4cd6390a132151d0a5"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621505474 · entry 108e9186e8c5677a1258…

Expected log hash

7fc4ddca6f65b68d7bb8897b96188547f56c1ba672ff212c685cdf4bf7438da9 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":"v1787887633012","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Man kann nur eine einzige PDF pro Tag erstellen.","rating":1,"review_date":"2026-08-20","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 (d07487a7d859…), 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.