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.

“It doesn't change Zasta's fee.”

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)

c63d23af8bc664977df03ffa9718973f39d302df758c854bc072d89dab6e1437

Signature (Ed25519, base64)

G+rg0FoweOF6pbrMebFlwLFszNclsXUpqfymIg/FybUhu8vbxAcLuLUNJVC0vKIY9K2q6xF3y4m+xLyGPtL+AA==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["c63e3d3d0eea540e3924c80d8a6da5e433d41655066f10a1c2fed037f905f0fc","81155d6beaee8bca7f81d26ceb1485750204234a2cc15e9aa91dba96f6477455","8f402598ec92135e7ec33f8ac232d327737d32fdbee657931badff8460c26da5","9581f0ab9df738357632373acdf45d052690da4d5bb561aea1d8d6c8c8a6a3d5","bcdca7ed4cd34d7e51dc09a6ce104a4169b25780e61c28dc743498d62f5702ed","61f28e1d0c3441a01f1a24a39bbb0e510c304de555a0aafc06904d318615a59a","a8a23104600744fe2afc80da00ebeb24daf211f595e4822b5c3d6f2dc09619e7","aa1d29358fbdd681e04a365b194a584d706aa1a69bdb84843eddad8d705f3d24","47bffbfe1566b4ccffc3f42a9370d95982bd610abab762a91c61b1b7f0d98007","b2af4cc3351c0ddf6846d4bd50febc82eb3a860c484c5cde2d5cd64a5a2c99e6","9d52e13a7864d7529cca85a4b7c15a5f7242a077b239eeaf0146f44c46bf9c65","0a9a33c75948420bc9c46c8097da1b06f4fe152fd5716276fa9112799a085a6f","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/price/en","quote":"It doesn't change Zasta's fee.","rating":5,"review_date":"2026-09-16","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.