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.

“however, I had to pay a processing fee for the "tax advisor" in advance”

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 3081458408

Proof data

Record hash (SHA-256)

b80fa0e7d3949e3fab894d4a1dbbc56b6f8d34ed57658b663b26db6154a28491

Signature (Ed25519, base64)

y1CcjnB/cJ8OHKpeL6eDrxTebmiRbLBNrrp1KZYTb39FkrGMIq3TE82oMS/+uxoCmlLKVc/iZkxMgWetcXpeAw==

Merkle root

f2e4180d5a0710e7663a4b79dbb50303bd6f86e3a2b406f14001987f705300d7

Merkle path

["b810b53f88d422489a8aad577a82d36e2642bcf3453668d58a67c58555c41681","81e91dbf8c4a8ff1f330e548b9a56404e82cb58323c403c5f259809f5f431efe","4452ac74aea96c8715041cacd1c6d417d1578febc1fd7a3c38704a17868741ae","e6b4f9faa7ef5f58a9ed5e118d5c4abe78e4c32991ae840c755d6c467dca8af5","8d71f63431a6445f367b4c545a1ba8d4596bf1de59dbb0621ec5a0e83397d7d1","f8d7c0427d87972decf1bb3f0c46e93179f95fc9f72495a54b2435ead62a04f7","96091555b2623ab11a0bbfd6aed492a23cc218e85ce8dd93fa86a09eb7105e25","571b8b899daf212472177dcf64e47bcf4179e4b4128d410509faf971efb79b9f","e8cee1788f5aa7abab5fbe6fd2a9918e6d7fc595b1a8745586fab92bf9433663","a5b853f4339668d8e2811460707f4d7f701a559b57a4968b895ae3472a99f792","7d161190436828e3b924be991abf6ca9de9f216df87438fbbbdcfd9eb09494c5","304838f685accca1ae3f45c957e53ba7386fb8985c3a192ff126e9253964c410","a618a04450ddb2e735a84d672af3987085792f675446a86cd0ae55793e873153","313187cc6b6f4604419538cba862872ebf0808d9a29a91fe1debaeea14203481","db68423323e09aea2b604cfadc31f46b31b4c7c4a02b09b3fe1987d87269ad9b"]

Anchored

2026-10-05

Public log entry

search.sigstore.dev, log index 3081458408 · entry 108e9186e8c5677a9490…

Expected log hash

083ecc94bbb96677ba7c17fb105e7b1917457374ba5e9cc48c412762603877bd 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":"v1791172602574","kind":"published-quote","locale":"en","page":"theme:zasta/billing/en","quote":"however, I had to pay a processing fee for the \"tax advisor\" in advance","rating":1,"review_date":"2026-09-15","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 (f2e4180d5a07…), 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.