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.

“is always helpful”

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 2684249937

Proof data

Record hash (SHA-256)

18e3e7f7d94d9ab0f4e9afe9faf981d5f8ad8500145f631eac602339e5606299

Signature (Ed25519, base64)

MN/PpqgoVl0HDw6RXNG9/Uyn9/gFwAfq7cMUh/zHMspeVDNBRo9Th7muX+TNFiBRYRHS5zmj6jtko43v6Po3Bg==

Merkle root

57e60dc521a4ab8ee39747670ba01310ec9c3f92c64800e03425c0a645a7f8c3

Merkle path

["18e1a70e4f85ceba4a6821e08fd88a3001d89acb30208d7df6f62a6ea86beb94","d6bf50c9a35c5cd3f46ba23e26bf9186a7d08a8d4d7e35d9651448b5f4dd4cc1","b702a7b7e2467b4f1e1ed706d6e7106c3ec04d6285bc630d607ebae3e6cb39b8","f848ee5f895f0766070a635e4b8baa08027febea11566f128913005db8cdefa1","9e49d358bcae543a1a2e2b777c0d1b2f16a1df0e8800995b7882b7c141d94808","72ca23aae89fdff5f1cadb3118ca5f34f015e132a5453991ed2300b69853362b","7c984727c515cbadf9170587a29f66493319093d906279ea48e0d2d486196e04","f430cb149ea2998cc9b9c8421059dc3ba2022e33cbd5ed9424633e9aeb80b920","b088dfc6ad85548f441fa9cc0ce7b4c49c87fd5259e98782b95e5528c3f16f7e","d9dc7339165f3750aef17b3923652adfdf3b0786d10fa3ea0045f6c9d4539b96","2370d55e1fa9f9db6ab12e66d3cb043d274a2991a4c28b4be4c2f6bbd1f103ea","47280f2ed4dc2d5933da2f808e8c8b8bf62d3c186d4ac98c1b0e3f8d2e11b438","fe5d111587316ff31f5b38fa29f046572eebf5a2bd99ba16667a173d27f92a5c","dcda2bb48f4a1ab26f6126b1aaafb184e5f8d3630133c0cad42caf115918a81c","a1d5535cf9f405ffdd99d322e20ae6357cbed1419e88c64471b565623f0a674b"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2684249937 · entry 108e9186e8c5677a47d4…

Expected log hash

46538ec60065603bf54101fff011eda05a02a8a062bf118596692399059b11c2 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":"v1788336087966","kind":"published-quote","locale":"en","page":"theme:acrobat/service/en","quote":"is always helpful","rating":5,"review_date":"2026-07-27","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (57e60dc521a4…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.