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.

“Ich dachte, man könnte von Null aus PDF 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 2658211220

Proof data

Record hash (SHA-256)

08fba1e0236c8c641ea3215b03ca89f2173031c88a587016102050d203ed3751

Signature (Ed25519, base64)

52dUZxrAuBWdZoXklTpPPpQrFFSn/J/nda+lHFnuQr8G2J5N75SXKvThLEKjhaI8hcm2ipDtHKdh5/o7LOy1Dw==

Merkle root

dc262458aa22478fffe21ec338d01c6f4cae4a788ed9fea3c30831a82c06da82

Merkle path

["08ff4b4595fe0ac3c1058bd171110564a6efc22224d23bcb2ea2b0c86ede6295","ac884aff88fd9c610fee94ceaca02b923f4cfca4d4cb4db1686183d55c2ba52c","1c4b3714200e50d3de8ef943d441790136cb283ee5916011177d70cf901c919e","3aeee11ae9f41a72ba7892faae68482f279872a93930fbc96f2fea02f5024d95","ecff3197a5c649fcaacb839229de4f6625dcb4950b7d1b0f0ebae06ed07e5f72","82599f0911c2c70179179e79517575c674aea2556928ba89e9dfaff7c6992cce","c85b2d9eab50f0bd46dbd0c97fa5697d69583e4862b2eff3ab942fabb6d7165a","420f16e325b0a3d94fc6c68acd7468941152fbe0ac914a9f472d3ca3b7cf34f3","70a0a60de0a59d6cc7ce84df45f45e706c0a247c507662b760c28c77cab3936a","e451063a6681ce9fa7b699c63a40569358f3f68c67456de8af6e7e37eedcf509","263a5db8f7e34b426267043379c0096bfbd08f4226072627615e1eb1ecea704c","109feb850a277e0b490ee3c60767eb9380b9740ce327bee7637be3a60c0cd37c","bdc9b750f877995745e1cab86bfadadf81a699dc296c03b30c7a277ddce4ad9f","05b68ff1f996fd6d87089c04d3b63d00c2f9717b69cfa4ae5a0251e3fbd668f9","fa0b5c0e2afc2db7f6b3a78d277777500a36d9f343119b2becbe97376b611a16"]

Anchored

2026-08-31

Public log entry

search.sigstore.dev, log index 2658211220 · entry 108e9186e8c5677a6833…

Expected log hash

34743b52c53937c552d8f13f390474d4daf1803bc63770b1d5dba985fa233896 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":"v1788149612113","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Ich dachte, man könnte von Null aus PDF erstellen.","rating":1,"review_date":"2026-04-17","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 (dc262458aa22…), 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.