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.

“Everything went quickly and without any problems.”

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 3198489507

Proof data

Record hash (SHA-256)

4d8250ed57d072d2a132d3ac9fb6e790a458e67a1ab417edafd046556bb38e7c

Signature (Ed25519, base64)

j0hyaSRn8eqFfAjkSGB8SQ2xc8wYwJu/YL533544VF/u+8HQngsFGM2Iy+Qfiok23BfuKqdgajh2wf4Fr15iAw==

Merkle root

240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494

Merkle path

["4d8fe9b2b537bcf0f1d6a3439e28cabf7fed0f4b114bf8645b50f701a46c301c","8e480b9fcd700dda6522114f00fc3fdc17a157cc3837ed946d5962e65a343b2a","5379777a3993bde19459e30f8fb4f9fbd24074f23aca649bbe29ceb82200ab39","c24bc909e30de2607cdfdd267cf5aa1ecc7bfbaee626cbae62c02e37e27948e5","3e81891698768fca814c12ef4cf821655a8c126473b77d1a53dec7dc2e6e52c0","182b259e8cfde1f0861b17bdc8f07d7af6b9751a7a0c42b6f60d6ccd3951b1d4","2b2e2e6a6647d11d4e180d8f8061bb05017258c4c13a39a155d59248d6468858","5ddd5514039982880bbee0c95652005db7e00c50d1434b019d5ba1f82df61cf3","9a27d04d796040eaa79b677b3125f5ffbc96c652ab4eb2866a95f7325c8c4020","fdc6acf01eced546f9d2b8658934cc651d62ba2d57e1317249c015401ec0b9a2","5ad3197fefada8823cb614c9da506ee86fb12989dc027331e7ee50856a840f74","74d570f87708582f870a40ca5a8a7690d6274c3d406d2a50e5092b918cceaf30","d18e44bed2d452ffde94f0480bad35bafd04d9a4d8be46c5e3464f257f0111d5","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…

Expected log hash

50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"Everything went quickly and without any problems.","rating":5,"review_date":"2026-09-21","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 (240cb9349179…), 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.