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 was impressed by the speed in merging files”

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 2582664613

Proof data

Record hash (SHA-256)

10b05bb0b8c40bf8f2071074e1cfd5eae2d99a4d201e84770a6d708f18e84f84

Signature (Ed25519, base64)

JWdnh2O8VUIfGURPcCT1rSl56vg9cpOuQfJVKWIN445WrdNusm32WESOD3iqFsOBVw8ETqVf8H7wcZ5yDwoqDw==

Merkle root

6eb5f0de999e332d4ff1f5a17c7cbc64ff4572acff20a9a333a7379bc9cd8f77

Merkle path

["10af0f34f60f7805bf684e175ffc87ddbb96466bb37da1d850044f43c3cab1b7","dadc83154017a6154db59205f571e76d8003e5262e156f25bdee84c78f6c9264","29438c615a4f98bc507b3bfa50f0c500878eb260d8527afec9bcfe3bd24f9d77","98a03a1c67042026a6ff9c754b21f1accfe61521616ebe8fc5ecb357b659d84c","ecb706c83cb924be87f1c905e9909d1554f4b0e607e2c5c167895d77de90c5ef","b8eb9669ef3a5a606bdaac9ca108fa82b6604eb39cfc8b24b6500b37bf590a45","a2030b0c634d28744a7c99db74e86cdb11f760f830e229394b6eacd299e9291a","1a80b4fdbc4db55353b0efc28301155e679134fe5a76ca516166f4388243e26c","ffbed63921827517050f64b02815a2ff344035e41104ccb0479a4d1ae0139907","cbd0223ca3fb987e5106d95e9bf5674b3f3295af8cf4d0a9ad33b07f8527dc2e","7afe894391858c80cb03b8a16a11194bd93d6217e097412fb96d211822fb34a6","9337e940b7f8709548c4fe6a97db0e6d1456cbc8d635ace7649844bd1ab52675","84fafb1938dc12085d21bc69181bbfe988045a5a52e2d14f590f330785efc31d","3636da53ddee26549db9323e33a1dcd5168c1910fb5b849a7eaca6270f850dfb","f4ae9615440dda9b622f189073164d60d1c018e361cea2376abc66c14ec3a790"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582664613 · entry 108e9186e8c5677a71d5…

Expected log hash

8093bd44cdbad53d6d80012df9deb710fa18f2cfeb1b8cd0e55864446ecfd9f2 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":"v1787630263994","kind":"published-quote","locale":"en","page":"product:smallpdf/merge-pdf/en","quote":"I was impressed by the speed in merging files","rating":5,"review_date":"2025-05-28","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 (6eb5f0de999e…), 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.