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.

“Es hat mein PDF von stolzen 26,8 MB auf 2,6 MB verkleinert!”

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 2680856520

Proof data

Record hash (SHA-256)

0a994a37484f6430269670854df20705cf5b751cb2d3c66474a18d6e8f268d08

Signature (Ed25519, base64)

u0fk3NkbblMbz4+5AFPWF+Nw6Q66/dDnIm1/lLO04nZhj7hbtH8HTBVx2SRBvFrqi/rbh1vCkVUTeJCr3+b8Bg==

Merkle root

e42defaa0a17e226699ea4a82dc9c6dd27c28085170ffe1d62d8c6a4c9215db9

Merkle path

["0a981386f3d18a76d0fc8a0e3b0d78a8291bf9ee8cf2bb75b39820d0bba3da57","e6294d7a69f711b44c2c17c27d06e15220c721e843c02a11b32e284dcc65e208","6f7d9bf7212b3f8a3ae71dffacdc3c07a315298f2545cd99826bf3c461bd97b4","7fefc630f3eca2e33ba130f05a9821e74007868bec94c25f9b3b7de5e00e81dc","1347b6e0af2f7eda43296597c56b867aecbf9ce454e620b809be53976d2308d6","5ebb3bcf8262872b74516d6cd80360a655bf53e31b7d58a12ab7e9fb8081dcb0","b6e3dad69cfe14e0f8bf2be46a4e0e513a1289794ef39266ce1bb889f4841b11","f971ee5ac6fa908a04024a8beea80d23bb21eacf4b6b5d807360af69024a47ae","a885c9fd7cfa5b4f22fce8807a9b8f6d19737a48d9478fda8c011365a4aac7ce","29e82282541d192437a4f6c358509015bdb38473d3a11f082d981053cb178063","39dea0caf015701cb503eb4e94059087d030d6df7160f0d8c08dd9cc53b44240","26322ecba042f86a8a3948f32fb985f61482003505576f985a5eec2ec4c81858","a723e3192c73ed0856ed765177b67dd95561b4a0d6d1c0b16f64f339be4f05a1","f9b10a6aa616ed717dd3cacc1714fe509709e95281fdde9fabb8c6943e906d5b","270a8fe791f18cfa20f43263c29329704ffea666703469cea18570c7ca1219e3"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2680856520 · entry 108e9186e8c5677adb25…

Expected log hash

356153ffa6072187539ea75dc6dfb23d03b74238aa8aa70cd6aa9a6a99e983d4 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":"v1788298923475","kind":"published-quote","locale":"de","page":"product:smallpdf/compress-pdf/de","quote":"Es hat mein PDF von stolzen 26,8 MB auf 2,6 MB verkleinert!","rating":5,"review_date":"2026-07-24","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a63999387df66be14b47258","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 (e42defaa0a17…), 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.