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 2514297706

Proof data

Record hash (SHA-256): 29cf13bd862c5d332a1a01ac824db12e9ece02f7b7d9f788d156de4a9919e827
Signature (Ed25519, base64): N1KuZU+04QIoOaf6gTtmKFRgK9Q4ECjlwbWLjRuufDnqqEo7q00yKfMdqAqBVp5QpxpzciOeQHySFlSnYVl8Aw==
Merkle root: 1dd7fec10002d9304505761bfad9c0f048c94d1d6a0775b6fc4291f712d4106b
Merkle path: ["29cde11e24a9ee23d96e5e5e76715d2b581bb74781e8306c559fc1c15793b0e7","10d5787531f02583d92489ea7da6bf9c0397e5be256994bb560740da0cfc1923","69a9f1f88d3e483f09ef88fdb4489c7542044bbfd5c993820d83604ef9f0d049","21e0b24ab43dd6783a0471e9bdb59f09340e5023b7aec24ce40b647024ff7435","454dd33b2f6f2129fde04cd38123c70f79adf05563d6ac530c4e5f931ccabc96","648c78938afb0ab82c8a5831b62a99e6e8210aa0fcfe12bae46e6ea0bdb84929","b122f7bba3aee7b5db61f8e95726e2663a78ecabe4e83bde3a06edc621c1ce84","08228d76702e0aa95fca2c023e3332fbbb48b02038894e6504057f7e4f6e36f4","054a63cce19a9cb3e83b2dcc33af26abbadfc8a1231d818faf474ff1a6a31c77","be0261ab58cdea40e3919133d24eef62eb6031c9e7cae3c5bea7ec1a887bac99","4b06291f7784d6222f0fc22cd97f989862f31499c2f8ef7ea6ac1d7a320acc7a","98438ed119190bf5694defbff6a1b322c9742356112668a6bf5fcba714c46914","1e0f2b6cff090cfdd5d25ead7f46fcfc2672d59cdc86bdf2b9755ea459d71ff0","96733967bd879589a2091176049a40f13c26bf93f656924a17f15f3f405bad21","54bbc2d7930ffae8e416e662d825fe408002ca5c9c581c2388ff0eb5a37134ae"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514297706 · entry 108e9186e8c5677ab801…
Expected log hash: 861cb9c1424d2f408888a591a8305206c340f8249f4a4581b32f940ce8815405 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":"v1787126020727","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 (1dd7fec10002…), 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.