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.

“The map on the main screen is very useful.”
Google Play · 5/5 · 2026-02-17

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 2582632102

Proof data

Record hash (SHA-256): 12f9fbf5c8860a29319121a786d227bc70782768435fa3f9827bf402966ffcf9
Signature (Ed25519, base64): lBN8+b/iNd6576yIo8Q/Ucu0SXGPZnqozI+AjMOQDaZc27HPypM4sgQQuGoahNUHgMwYXlTuyvzvPE3yI8vDDg==
Merkle root: 394ca2392606a3b04285deb57e7eaef6f651edc68cd81b9dbd21e1df7dc54fc9
Merkle path: ["12fed03d01a489209f9e63e9a8e2ddc44fe2d9919b05a5904d2752c17081408d","2bb23f9fdbd306c226a723369b200a7d1a4c6608731b6b8fb80a82bcb1db7cdf","1f5cbe4fb9c3c6336d5edf2e2885dc04f7c656df6a9d8287f3bb6f61235034dc","45e48fd9b9d9818e3447b507de4327eb2fa93344ede5fa2715f84c9fca33dc5d","60a4d6df149ec89f7cc297d6cd89f47919542420fd788adda9230d6ae6cd99be","8e15860b38c61996b3f753fd2bdb9a47a06874d8e3920c19842f024a321dde04","8fb888072c7f129ba287db275a6b92ca23354544fa3864d341c5cc3cda446228","1fea8d7f9cc8848374936cf52a05ff469b3ee33df2ae792264babf03ea413942","f331939b51149e56e362d08b2883bd19d6a2d65f05852a254c48b493a901b164","968c163a0a325ddb85631014817cd17f1e3fddd937f8434e69181feb288ef197","b4af523d5874b83b0101def1a80db81798c91b854f619ca798f144999f26e621","ea300b9f1ec6f76ad95d40f8b2658947f810ced6129f4f7aa3346c2489d51789","b5d5fa09aa8096ed08f9e7367f0f812c836601d81e243eca35b79920ceb32bce","54146392ac4bc258e4e7061916abf0dc1399d49618893603dc99f51d4640362e","9d8f289f39075353ad2bb2433faa71c2a69f17cbb3019524aa8f0a248c7470ab"]
Anchored: 2026-08-25
Public log entry: search.sigstore.dev, log index 2582632102 · entry 108e9186e8c5677a3e35…
Expected log hash: fda432c87b1359c3ecf3aab1f5f6988c687e98b4f915b2856536280c29d480a1 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":"v1787628086357","kind":"published-quote","locale":"en","page":"subtheme:meteomatics/quality/widget-functionality/en","quote":"The map on the main screen is very useful.","rating":5,"review_date":"2026-02-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.meteomatics.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (394ca2392606…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.