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.

“Excellent Service !”
Google Play · 5/5 · 2026-07-24

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 2543383844

Proof data

Record hash (SHA-256): 18dd6f3acc144a76d2d380b78ff2eae747184dab7f1312788fea6d32e6726f8c
Signature (Ed25519, base64): kqU8VKXrF92YyP0X5RKK8LEZPUXNuLsrjoikl14vrSHd/rBNokoCtA9jBlY1Uvl5i+eKBd+w3l7NVr+PY4rPDw==
Merkle root: 7252afe559009950531df937e7edc9bd1c57cf28a24ed7f6c6613b65f459eae4
Merkle path: ["18dbe6035c51c550d01d8c7d35645dc70c98b5278fee223f4615b2296375b21b","0b526be5f1fabbd675511f208d2ebe651fd4c62ddb4a889f87a05623d95f5639","ed758ce96bae52f41b2c4db208cddb8b2a78a272093a8bb7ad0dc0f9091dbf9f","714e12adbac2005a1eb74623d659e52ffca74a5d37139ab679ccc4720a9cee58","a591c704c1b69c6dbf9d3ce54b51364986953147b23945fa1936f6d014d3043b","19758357d742775ecc16f166c28d991308928bdbce277498247ab6e2b09f8285","17c25db1d92b568bed3d4134794bb932accce592b555543d96936abefa8bf882","699af0ba76f0d3de98a4867f0538daa8f59017a2f213ccf821263523c14fba4c","cccb595a81f8309112ab7a6b4735256d4856842479afdc072bd1f64b5a2f4bb1","9d8a65ab5165b8e8bafedf18b6c927f97b0dd33f957f4354bbc96a3975e90c95","2bc1abb33b392cfd09c405cd9d1b184e08c609e12dfeb1fc273370cb2f79335f","67de801f1bc1ce81ca75edb69bd246d9038267c0b62d867a6dd1be9afc2acf7f","5b655ce1c6b3a6040c73fe70cee1f73a87a67aa56ed97040e7fd88f9c78d3e1e","6ca0e672260f8a36160629905eaed49c49821fe80001f9ea932f048c0563803c","b3900b15a2a9b7aa805b691ce86e29db39e03d547238a84a3c0fff4fc2daa54a"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543383844 · entry 108e9186e8c5677a6025…
Expected log hash: 65212d488cd7bdd0d67aebdd70bfc57f4b622fa08b8179427635d69eb7ec385b 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":"v1787285599851","kind":"published-quote","locale":"en","page":"theme:acrobat/service/en","quote":"Excellent Service !","rating":5,"review_date":"2026-07-24","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 (7252afe55900…), 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.