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.

“So far I have been pleased with this app.”

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 2524422814

Proof data

Record hash (SHA-256)

fd4c89c011852cdacc6668f0802d4fa0a8bedcc3afe666e53fe28d80b5db8e78

Signature (Ed25519, base64)

z+BAfcnDav4D+GNmUFkTmiBkSSrhTK1fzpvRNmARs5Y3r+OMY8o6ZWF4CQhQHg7uAaHL6ABnh0Ou5I5KcxrrCw==

Merkle root

f8b4f722de05d6805a889681c3818dbde0f5141f0c8463f2762c4a9a02d66a2e

Merkle path

["fd522d026fe8edf8a241d1fc04e64e3662cb43cfd20fa1de1ec9958dc7c425ef","48039844c4442db40dbf070efc17554ba93a92b468ec7e48aa7107d37144dc29","6c1072eeea6d8ce440e81874fb844d2778f9af4f70c507f273fc6b60d0bd0420","cce51051c8f0b66fbcd75931217f721b918eb9c5e94b29963b6907f9b37ba56a","218367f953b30ad7b2d91031621312cf875226a2da10efd8b2ecdb2e62140211","11b324099e39c215334d8bf2636c1753db5c86fbf14ffbe209ce110dda60e2ac","05aff387b6a4b3cafc99d637d9a1674f0431291058b4c026369534035691d9e1","58ba01723433430382b9d374425ced1f74818eb080619f740b41c5151e329394","dd091e4b0f1b3b6b9dd2f854910a158d97b1f08679a8e1bd83c13470fb56b2bb","0880f57ad2cb461ea7a46b7d518040b61b47832137006fff284924a4d08a85c7","06f7a93baf95476f593ddecfca04f326c9a79ac740314e4fc04c944d1561aa03","55c8c6eecb85583149f9a1265629d0d25028f7f86ae101a9b330baaae0f213a6"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2524422814 · entry 108e9186e8c5677a9741…

Expected log hash

e042bf60ab37eb8951abb7a408cc8c7483ec875b9606253deec7a67967130ae2 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":"v1787192294432","kind":"published-quote","locale":"en","page":"brand:tomorrowio","quote":"So far I have been pleased with this app.","rating":4,"review_date":"2026-07-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=co.climacell.climacell","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 (f8b4f722de05…), 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.