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.

“This is the free app I was actually looking for”
Google Play · 5/5 · 2026-07-16

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): 6a4913690676e19d3610ff17786749ea3136ce439307916c202d4356c36c6849
Signature (Ed25519, base64): BHya3M2WPL5oI9tHn0X8/Cu4G53mIFt/4Fha29IiPxIHojjRqbVOkt5B/l+i7VDwBHw9c78pdmlIqF9h++4kCQ==
Merkle root: 7252afe559009950531df937e7edc9bd1c57cf28a24ed7f6c6613b65f459eae4
Merkle path: ["6a493b981a26917a39ebbb73de0085c543eeef8559974732a8e8758d43828558","12050f77cb2ba6b56b8e6bc4069f7d74fc065c2f8f7084511e32609704c51341","b997372a76b32de8ec1430a0d1c0fe439e366929946a69b7eb1c3eca54600800","de5b0342047f31233e7d2eb204e694d734b012d978ac1a80769db9a33a22c86e","0989d1a5291566c502571cf54d7eeb9ee572133b1bbfd31fc4c84a33009fc6b2","cf3e3b18d029fb87689c76f8146a2b3760cfb00d24b7e1af79f016333bf93436","3780eb775b711d6854efa35fb684c7fb3451edcca5bb3ff41f304106dfbdb414","85d868366f98a99a78e5604470a2f2d9755f758dc06e32d1a16cfadb362e1a53","188aedc07f05c56a11d0b53f6f8e23034f7a2d8429355da3b69bde42f0b2cdd7","d2831d67eaf4f3686dace303e10d8acc1c0de268db70b46b61261479e6f791aa","cd249592084e780a35e0081c2f83b2d7e98c25f9aa204178a806acfc1ff1d41c","88302dd5ebc2ba0cc663e042fe6c41ecfe1897521b7123ddb032f75e20d92142","18e11e10db085a7803eedbaae6a5cc4bc15224b70fb84f50d498979bf8156746","cd4fda8dbbc96e358ebf0ecb75fa543c15a1f0707b57959166ff1973bb1b4136","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:xodo/quality/en","quote":"This is the free app I was actually looking for","rating":5,"review_date":"2026-07-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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.