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.

“I have used Smallpdf for many years.”

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 3178115911

Proof data

Record hash (SHA-256)

03ba772907fea6ffdfe1ee918e11c8b8b32371e3a8e222ff42a8be6e63d3a626

Signature (Ed25519, base64)

Px9xShLF1oZp1Kv12lM7dA5RDHYeOWBvl9pOdQmixfrQoC01VUACI88204gEuXsDmIvoSbzgm6b6k0OVTPSWBA==

Merkle root

afb9ffbb4b4e88017e1c868247f919ebcfe69f09127d391e7daa08019eb2b63b

Merkle path

["03be23bb89785b4d4e56d64b2f41343284b559e21542b5d0c29a4a987ce970d1","e2bb1a3a082d319f774828a36d7fd29c4a0b7a00c1de6244edddbd35fb3d3a81","63f0bc9e51aa52a6b61406d7ba23065bb29a34da65c4f07a7650e31a0fa1cacc","d877e6caf420e3244cf5a9cd90cc173314f78ef67c393e14438d239f15d2d12b","6e76846f2d208a5105e21d3aa29ee1aa6065687d7d8fe78fee9ce07bb6898fa2","b3fac60310b378703efd3e35b75b62000e34c9d2b89b26a6e83b591efbc61919","d7ce5376c6c28f30effa0233885f59ec7ef0c4f0301baa2c2b1f1bd9033b1ddf","19d1e2abe211eb50cfb840bdfe9c3b158695282860c505d21cbe1ea76ab44d05","f4161c4c44f163e67e2600ce00cfdeedd59061c6c3d401fa94396770ecfbab9e","750fdf58c9009739f0fd6bf496a6e8cc5232ee13369e17fdc3f07fc924c5c4d4","834fc55c724640286c17e2c349c32516df47843a4c095ba5b0f5178f1444e736","ec08854347577678bea6aee9937042bc6beae2ec019209b55d90c01fe9714518","09648cb4275ce9eb9f26709778da1b3653a6ea84465537d5f6fe5c1b17d3cea0","15ecb20ce6559654c94b8b858c027c014996a92eb19771813db0b794d6214fb6","72bbc4ee0a973113b1d556f76d02fea2c4704794a0d313a96e49ff7b6174dec2"]

Anchored

2026-10-10

Public log entry

search.sigstore.dev, log index 3178115911 · entry 108e9186e8c5677a2bba…

Expected log hash

a144ffc32dfaa9fe45b4895b7f4c17280667152868dd8de227ca2811c60c870f 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":"v1791604579182","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"I have used Smallpdf for many years.","rating":5,"review_date":"2026-06-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3d675adb4393914279e032","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 (afb9ffbb4b4e…), 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.