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.

“Probably the worst tax app ever.”

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)

a02b649dd8912c7de945a9b02ce3d2934e2553e02d70d93376e354db99d21b1b

Signature (Ed25519, base64)

+sZG1y/5LXnKRlBVWqMIOztY2xyKWVlN5F8yHiO8TqN081brPZDIL5S/bkiVxzPola+ncH5pWJ2Z3dyt9rZXAw==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["a02f0c326f0721a5ba6962ac24e917cf9af7293f8d38db1ddc2345a801fb1029","17eb4c5223bf10de1b93171828fea4decb4529e3ea2996985b21d6e7ddb0e500","aa791dea425e6809eaf918c2a91a93972fe8c35e779f827a8a1d83e5538e2312","95d87cbc6195a10e053a72c0fc205c7446da7d088d27ca9c13426ca09ac50d18","cd94744d1d741201783605eecf45dca884957c9cbf1c1160c82d27769ee4fd03","a942ed0e1dbbf3c3156b6605a4c71f9a825e879e959de9b658ebfa1d0abd3914","d5d60a91783298d361b34021d98611f492be44d5b242df91f6c0bed559558c55","5c7b182b3a422044b26bb012f3c2ef812dede4b7ce2fe947c723408d9f400ee3","aa0cb46a285cdf47247565f6a9efee342c60a48a3888c8d2ce155b4120a18647","dca177411a9537fb9867b2458c4eac87716b13fe947964e7c0d468eda94cd89e","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":"theme:zasta/quality/en","quote":"Probably the worst tax app ever.","rating":1,"review_date":"2026-07-29","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.