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 calculated refund was also almost exactly right.”

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)

b21bae236918c843efdbf6c5c5f390bd00f80c0a4cc3b07947195771fb95726b

Signature (Ed25519, base64)

3euMLnyRr/d+snjjAL3h9W9IgYBa0LPZzpb70Lj99IrfgMkc1Ew/7cWbvWxr3ZdQw8p/5WitBJrF4yEwykjqAw==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["b21b578dac9c474fe2e9576d03d89da90bd2637e2002a5b37211f05d728a6c5a","6bfb814b247d6a48e60a255c6d3928249f6166c63574d71123c3a3768657eed4","b326d87ad800deb90a4840d325684a7140f898368dfde009f72a6068de4c9fd3","5b861131ce16d610f82177ba6ac4ff7dd855e730d1d0afd16a015b7aa8a3ee02","7521f400460d2e7cf81f8fbac44ec5bc89a5f13c7d2ce13d59f9f3d02aa4ef1e","e7255480cfae4273c21e760efb7473835d7b5bfc9b86c67c4f58be76445888aa","5a419f5331de54729b57b788f6beff1728efa89f1f718c30ec792cc16737b0d7","1f8fff240b207a3484622a142d1a3eaf3fac801d18c9eba9fbc0b27d9abd5c2e","20c1b67adcb5200ea99d6841e46e30b92a06fca2da1848c9e865d230a6ceaa43","8933bb3ef9b3a40d01021c66408c492c74f97295818bd8f6eb4c7877dc810344","c919197c524c32c926c31f4b65a12463ada5b42732b6cfb01cf4401a3ba244dd","55a9b55eff9a801fcfc3d558b16967943372bf3872c32c7995af16402ab803e7","108f3d171e4ec3a22d208fe56e34b1a576bfa9e9f8a046f3c09e78ff42b08593","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":"theme:zasta/returns/en","quote":"The calculated refund was also almost exactly right.","rating":5,"review_date":"2026-08-24","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (539721061967…), 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.