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.

“The tax submission via the external tax advisor went smoothly.”
Google Play · 5/5 · 2026-09-02

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 2948162176

Proof data

Record hash (SHA-256): 9c7af2a95ea929eb8165b718cb4f1af52545e6553e267de640156b41ecf314e5
Signature (Ed25519, base64): pj4UnVXVtADBOZF+TI3XeTUjbTwWByzp/zm9Df8m1A1FVqo82WcRSbmfYUkhP2WhDQk6pL7LRbnTls4rDqioDQ==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["9c7b4bb3e607964f5a1a3daf5aa64b0bdfa00bd5c8df72253feb4e5f9fa86a27","f76af68d9b57873de216ddb9367e053df69e32e1bc02f04c75b0dfbd363d709d","78e752f2229525ed355a09d85663cb77f2e292c506fb9c363181e8e91d493c6b","18f761e4e1bf1a858a685099c088d5d70fe0c0c6c2cbe2aca0987620ae327496","3c167e81e2cc8685b0d758182a4cac9d806b52b32f984a2ff2a0a25d5acf94ca","5808c82c5a59be4e9f67c135f5ffce65af72361ff0cdaf2e698be67f8fa50fe9","30cb16d1fb69fafcb6aab76a5724954f230eccaaf8a7e21815257c13ed65e77f","5127a1cc06e6f38962d802ebfcbc243545fe289e8efd6a35fc40d2698f1dbbef","d06a07fc110e64e80b174f6c1c9c2250964cfc78d8608b158063bd4f615908b1","9aebe12b7ad5fb9e613d08b44aca2a693e3ba70ab4b327951de3c0f53811cf24","2714638b7147c0d0cb1673c1a0e1ee4b526ab6eb0fb98ab03c3875f7f112ec87","3a38d47949efc602ff6b616965b31e8678e49342630177cf4660e5e840948405","cf100015419b4e08a8d3e2de5cb23ad7a262130bd3e6bdcccfa47329e90a07c9","468adf75cd56eeaa89e39f50b974b405db9921529d680bbe88ff0d1caae6f316","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"subtheme:zasta/service/misleading-ads/en","quote":"The tax submission via the external tax advisor went smoothly.","rating":5,"review_date":"2026-09-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (539721061967…), 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.