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 application is incredibly powerful”
Google Play · 5/5 · 2026-05-20

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 2622255255

Proof data

Record hash (SHA-256): 0a15e86df48e068a4f46dfc0a148007c3a344ea2ff5aeda65d26dce0331cb97f
Signature (Ed25519, base64): s6F4yBBBTCRZB6SUYQ07VZxsDlZ2YIG1Oi4f55wT2cYPrOFXDjdf1o6ALWIn80zcW33FwY8/mscPsnMME9+7Dg==
Merkle root: 21e7bb8f2fd2dd8d8171a23c0a79176483db4731970a3fe8e0e328189fa103b6
Merkle path: ["0a115410b5dad03662fc3b3d3a33392a6c9905c05bc7c17530a87208309b3030","d368197cef42e5ce4d4fe53076a26bbf8226c1395adb1780a3348f592f23ed57","9108856b1f995af7e8a3bfd550aba7b53db05378abe0115d205d3297318ddbfe","432ff129a6e892eaea7a80628f9c25ce1cb219316779333149a2be8ba84880b5","e73335d70de8e3346aaa2ed204019587474455a1eac30ed876b31894fbd388a1","fe9bc937eec327af6071586423b7485b61831672de44d54e99b572c0595a41d7","578eebcba6e813ef51d72e7c6b0160f4484f4cbc95cdf976eee0e92768703884","eed2f02ce1e15214d589542026ae33ecc52f2a045653511b33fe69f81093bfbc","edbc25c81d58983949f42186a7240070f5c3f6572f66156e87a45f64edb93166","d3fad7b39651a11b07e68e39f831dd0070ee86cbdbda97f3c478198a95e19533","dd3edb0688c7a9ecd6fe90d84f7990928a6628bea52955f52e45c6241e62d66c","a27949797d6acc76608eb2454a12e7fa3b0e23a9ff082297ecb4e8dc4f5f392e","3cea60263bc32cc376b16e1efd7740bffcfc93464b1276fab6e76a09df031faf","26fb1a8f86dacedb6315aaada1d0ce79d7f80a57d9cd232cbd85d2599cf8282f","2b3a1c21e085528ee4dbbc92da4d806c0eacec4cb4b4d9f473a6ecd411dc064f"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2622255255 · entry 108e9186e8c5677a7795…
Expected log hash: f2a0e8f2b4dab3949c746be15f65076279656fc5309daaeff038c9a778ee0653 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":"v1787896781880","kind":"published-quote","locale":"en","page":"product:smallpdf/smallpdf-mobile-app/en","quote":"the application is incredibly powerful","rating":5,"review_date":"2026-05-20","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 (21e7bb8f2fd2…), 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.