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 app is so powerful and easy to use”

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 3239939960

Proof data

Record hash (SHA-256)

1871e86b55fd492f9f8bf5c6bbdbe5b1f3fe2fb22557fe66813c33623353a8ba

Signature (Ed25519, base64)

qVUWrmHQlnW/LEYRsy7eumFm0JXE00fke/8jlgrIZoEJohY4uug0/8DFnEs9ln6cz2/SS1q/L+sDuhamdjMCAw==

Merkle root

954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7

Merkle path

["186c184d80f4a390d3d017eb9c712bffb906a64d21906c98f06354361db54296","9feb3018a40704ff0dd2cd175b913273def64b41c57f989a140133b3721c4799","b0ba074216760352179df0be95d60ac708a5e9f0715e9c682140071d42eb5c3f","8c7f8eee6173ea9b6e8504cf7f3f02b476954755dd05f68a962e1b51bac5f9c3","21f7bcf2f00a64464d470560b74c271346c7d7b71e17c60a829ad93e7acf6cec","e658b1adbedd6c22946b03b28eb444bff4eb234bf637eb2e42463f029c26a95f","fc2e4f4986bd55bdd551dc5370ca4f6ed9927b9681db0e64badd7068f3050e98","e16522948a8fc1d221102967ce1fcd605cdc07b614bef49624efa8333c522994","927652b0503d514a95b821e0da01134108e00a31d2ddcbcfa806455e1106e76f","d36dc94326cebd82196e74b3e20a9f7d219e7890d1fa4a313d92037293bc835e","a4dd75e23af0f1258e45b84db6627eea99f30a1657c6dbfb9ab7e1aeb6c7d199","fde62d346ca93fe6ab586e87195f181c2c9b2ffa2c14b8bfe557af9f131263eb","07b2ba787804bc9fbb84c73bed76b7f65ff1b8c1694261a8264cf5f3209f315a","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…

Expected log hash

28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"this app is so powerful and easy to use","rating":5,"review_date":"2026-07-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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 (954962254ff2…), 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.