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 2682933759

Proof data

Record hash (SHA-256): 0608239a860766f01ee47531432a5176acbd1d0e3463d664eb3da4477ee32bf5
Signature (Ed25519, base64): jdlnFsHzYyz1LspbmUb+iWkzrCQlPhxgu2gLw0AAM4F9JMAJTi2hAok6GCMkM5To+jQlpxN9DTT3OONKo2R4Cw==
Merkle root: 4fe8751e7d70c50e0cd3fed6e9eeb32edf31f624f79d82d9ec3817eddba7a9fa
Merkle path: ["06064e7a42880ed60bd4419a5c4e01bcadc094f92dd359e516593a59407198f7","7162cb146c312099fa4782cd0f5a19a981072e6e9a6eaaf8191ab53dee0e9bd9","479199d24f2c1ce07d4984ad641e1202ac32cb538fcb5652c04fe4a163479cc0","eb36028ca87676ad82a3b6b4970e69309de89af43fdefaef76df5d9fe700ce97","c0121b381cc7527c06a2c460546e853a5e3dab18eb146d4069550b192707c8c9","b97428122653176a381137b1735bcd8714eb5a2afc5f0db3e09ba3d6c7066359","6201735ef25e3231eaf0bc72e9761e6276b47c0899522ad9e5f5ce8ae00afb14","6e39d0312310ef97bec06c913e524a8350c922bed39a19d85e2fc6fdb88fc662","cac559c0e359326d145d52f8c613c6550ea5c37f552640d97733ff290ff65bc8","7fc902dd24541fd768741c3ec0365b0eb2222ef22f88ddf29fcd6bc121b434a4","55dc0b56a224978c1af45f2765d47668d33ca5f995bcab2c5c0e64196e69b5fd","e156186e749fd94aed5a129f465f57a129de76642c7051b32f1250d1a8accd6e","ea18abb121143b3c16bef9bc5a13c470f569c0ce0991c92429fbf586994f4ec4","b949a5b1fe3c5409c484815b6b1e0675f1b11819a9236a5e546056d1971b9a8e","1d8f51436982e85b24ea8b1426a5f0ee7a81143ad75096c92a05493708dbae01"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2682933759 · entry 108e9186e8c5677ab48c…
Expected log hash: d15c976489915f93c119ef146e715f5c01d5064a289c9ac130af05811dc83d56 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":"v1788318759763","kind":"published-quote","locale":"fr","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 (4fe8751e7d70…), 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.