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.

“just perfect app with no add”
Google Play · 5/5 · 2026-08-07

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 2544092674

Proof data

Record hash (SHA-256): f424e84eb8235280b7606aa9a44ba8cc793bcd7aeb734c0a45a078ae1fc3e5f5
Signature (Ed25519, base64): l+YgHTbwhwifMwFJlq3AbiDBCg91R3ZKdLh1sfYVwlYUxlvgoH0rh76h3kkT6Y9t9Z7kVXZRWUyJ+MAXAa0bCA==
Merkle root: fc0474f2ab9253f8c52a81a0b2f1ae382f5f022f9b54f4e3fe06eadaf19fcf31
Merkle path: ["f4286ac2296361707790030e5854f1c7b2c9fa3c2510dc9962754cbe71056d2c","e842c55b18170f4a134c1eeee3eb6e00c9676b25044bffde990cc33f9c933e5b","59c1a1144406b461dc8555a16f38690fa2d735aa08c58b277da41a4137e0f67e","95aa66a475b39dbfaddd757bb806057af913f81125479de475423ebd0d8be893","6bd86fafc23fe2c163c0e7c2f5e7f8f5d79a9669ddb467832e471ae8d6441d63","45db841c1cb22cc52691a96c3c9fa6ae739450fdef0ae17f04fd0f00e26c3c19","9dc0fc6aecb421e874b5a07cb5bc0be13c3963bb4455491c60e82ffd1d3821c0","ac653686e699aadd2dfd4f45fa3d3e2e05266176865a8d59f109c3143947b0f9","142d6c1a9db2266cdc692e81e93274a1e4dc4a630a2ba4cbab59ff4dfb6d2bef","7680336a354c46436987148d5b72015ad83ae2b3194cab497cf0879e2e420c5b","6247fa0d7a228bbd0b7164b183c3e3ac1ace245309538b24fafa883635f2aa7b","20e74c10e59b1e33bd4f3bae28d68f933c4a79df5f30de11634284914c378e3a","0e4031829bdeb15da4a11455ddedf9947e821ef098e4194f6cc46ba900c1202a","b3b6fd3f87905e1812547bf59009605afa62c4124a0a91cd029c06d177d44441"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2544092674 · entry 108e9186e8c5677a1b30…
Expected log hash: e3ca1014bd6a1a766a29da72cd2b9f7f9c6c416fe6af720fafa94eca555dc171 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":"v1787289954326","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"just perfect app with no add","rating":5,"review_date":"2026-08-07","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 (fc0474f2ab92…), 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.