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.

“The most useful but hardest to find feature, text transcription from PDF OCR, is paid”
Google Play · 2/5 · 2025-11-04

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 2671768867

Proof data

Record hash (SHA-256): 0ae0715c4ac7ad47b5b7e0ef530e74deab0ea03d15d8b46a8de9eb4b098469b8
Signature (Ed25519, base64): HSEEBfre/OqRkfGIBoejlOhI2jtPaXkngCGfm2FYUtqxLvGPAJy0BjwRCSYbc9cmk1rXO5gK9KLmWW1wTFhHDw==
Merkle root: f0c601bc37f52c70ded17f76faab5612e674bc087c8faf99b4d2f53e921c2b03
Merkle path: ["0ae289a058dc562fc0720b4c0245247e9f778e3fe0bc2eb99b1b322595df812d","3da8a0fce5185d0899a79e680162b641e65a6dc7fecd343fae023da99e18adee","8c201311aff01a6ed4373fd62c4bdc008dcdd5bdeae3182dd70aa7efcafe9c3f","4fa88f2ee6752cb6d61df04f7fa77a87842fad7306b5f022447dc29888382f8f","6d548b649ae7ef16a897e4d216a298ece939519b80a9d4615b0beb90bd955794","806b35990ec6650c8d9fbb3e67f8017675c358a91d329d86d5843197a0a53c3f","1b7f043c195829d9c0669d394f051ea2db0e041676ccd77f8db73b882d15e1b2","80becfa2beada30dffdedaacbff7ca17ac4611ca135dd06fc5856b4971341e40","6ee04eb69c91b35213e9beff6dea564dd255b2f6a7961d41eb529e262e2f331c","d9313cd15262402908762913499c4b81760359352dc1727ff118ab6eb5380e1a","8859b8db6506a12acf6198606805fd64f9576b8566d186e1174a6ea1645fb682","30261dab0822e00dfa6c3c3a33b3d063e3d38a7599dc6296431bd59470ad3368","63626d343fc27f295a2ff318756408f19fcf6ed8639844617fa9d1e202804a12","ec79f032c08fea2de521a7794f897a556ed84b17f8ece659b547d74d3137bc36","d5f5465b6d70ec9eb5fa4b73b511305c1b686def0c98a0246e8a4e9838a04a81"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2671768867 · entry 108e9186e8c5677ac984…
Expected log hash: bb91227cb78cb3334e4fa0a34a7640fc05bd48061b2bb5126f5713e7d64ceade 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":"v1788238642169","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"The most useful but hardest to find feature, text transcription from PDF OCR, is paid","rating":2,"review_date":"2025-11-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (f0c601bc37f5…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.