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.

“Requires subscription to edit”

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 2671651968

Proof data

Record hash (SHA-256)

1b174b14763d101f7300707877f3cfa7b8ace24f9f97949dc19c9a72f6d4a2fe

Signature (Ed25519, base64)

XwFcdDdEAt2z95evpk1813/LAmsDyCcQwn+lhE35Z+/1H2Ra8EQVM74Hh06A78aJ5L1t9sI99iWhPgKwf2ROAA==

Merkle root

ce3d6938e86e6857be7a8efbc85155c1c21346e72fe16d50aed37ed5b5eaf89d

Merkle path

["1b16be2439979cd17499cee427631ba67b89d6726de6157850fcb1af3b356411","61710fd9f0f01b1dbbcbdcb95480fa9afd3085cb3570e23e58f35ba5391ac3c7","cece9aafdc11248c81ec3b87e352fad4363a215963d0b9e91157727b82376084","ee8f83c4954f5abdec51a089f6cb18eccd4195f245a4f6016ebe85b6808a1217","b8f8e4ccc482a3e369251d294b97cea20efec7c4cff622961ee5a386ea5be6d2","5dac4feff772c0608cc561fb122a39c1d61ddaaad40219bc1f2670100b0758af","933961057149ee66e78da57a4182f537cd172ed9241232873281246f528cca40","f8cfc3b437949a0a7b0c0b0c42d104e2b73c13c814d8e2981e9a8d53e5776ab4","0347ef11a12c1f71c9640055975020db965e8036bc853d0c681909081d6d86a4","dca2806c6795547c7d23d78410527113454c14fc0a26a16e2e1f186ae7227220","a7780723cb2e71b8042f160f6a5900744d5916cd77251e8788cddbf6bda0ec61","b082cec9c71893995ee8adb970ecc1d025e31f078c329806eabbbdd351c579be","b30fa96b054eb8908168690ff8b151669e100c89959f7a8fe4c48ca457806f71","7c049e8780522490a97cb683a0735593208d22b55a66f49923a0a94c3b56e5c8","6c9e445e142590592ffd87f282aff1887c35a7581e681839c186aefd59fc6d6d"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671651968 · entry 108e9186e8c5677a6125…

Expected log hash

3568e710eedb6ffaabfb65cd1f12c143a50a3583c899cc455e67b87a19e5bed5 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":"v1788237937782","kind":"published-quote","locale":"en","page":"comparison:smallpdf/en/vs-ilovepdf","quote":"Requires subscription to edit","rating":1,"review_date":"2026-08-28","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 (ce3d6938e86e…), 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.