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.

“App malfunction in the process of editing PDF.”
Google Play · 1/5 · 2026-08-11

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 2543025731

Proof data

Record hash (SHA-256): 67ad60192cf21493bf8597eb9b394b49f877013ed607cc21794d9b9c4ccb1dbf
Signature (Ed25519, base64): U327zt3L/Z3fesMuFAy1BG0R59Nrn+CqfhsXbmlU7D5u6e96cjmxnJQxE/WjmBAD9RHjVL0UhqBBwDWOkQHsDQ==
Merkle root: 172a3e0b3c9f8b02f52318e01ba6beb899404e00e91c15eebc4dea38467e1404
Merkle path: ["67af8a0b23dee9084e70d44d02bfc2e4cbd9e6190b8139bbf3a4f3e62b36cae0","96e1cd6314513849783dadbf5b8a68be379aa352723befb7fe7978169cc7ccd2","f82848e1c726ac2104e0568c13fd72ffabfa29f49405e1a3c6b6262c1479dfbe","3f4936d3e1b60c73032c392d3a08bc1551572996c569674e24030e73effd65a5","30cddd6b54eb5214391bb003691b35448811b3cc671d6368223e5fe6bbd46d6e","7b6cdb9b900f3c4a09cf46d4af89a3d1a0ac947fd7813464e65081002da68f61","87f2149c4bfe9826b33de52aecb7626c60eb7462b31688db6fd8579ca234367e","9afff1d6dda256594d02e8c1f74da36fc1bfb14f95b6e5dfa35b12a4589d5c9a","a634db5359218553b87e096ae3288c8ce5860789ebb8ea599ee67155029c7682","5b5ff7cae03b89e3426c8f8599df46916abecefbf9edd1688cba600dd2d8d0bf","9b6fe70b1c1d3a8c4999ba686caa2ed21ca68281bad33f2e5fe6f7127e57520a","1f567a3fb36c78ae362612f4c99cae95ae4dd4ad0c6c633328b659341fcb6d94","f12a899e5c92b32cfe903fadd591410ed4da016670fe0a40b993afb550e2e37a","cf4d3887edb33be9d7a9e64011338d9abc8444e06d1f5332550f7686a2c1727d","7731d0ded4f51d151ea3e84474d1e27a6279e8756420c93cf5fec0abf7f11add"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543025731 · entry 108e9186e8c5677a8971…
Expected log hash: 19ecbe4a66d8adbd7c6057dbf6ed9be73485c248dba1e0c595279a908b3e8bea 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":"v1787283443958","kind":"published-quote","locale":"en","page":"theme:acrobat/quality/en","quote":"App malfunction in the process of editing PDF.","rating":1,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (172a3e0b3c9f…), 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.