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.

“Very good weather prediction”
Google Play · 5/5 · 2026-08-03

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 2513802575

Proof data

Record hash (SHA-256): 0ba29c7491c27dbe15e93adb1a4050b93fc2f8c1f4e168002df924423fa276f4
Signature (Ed25519, base64): Dt0Sl3SxuJYVNrz2LjbkiAZ5+h50FIhw8IiqcbPP11tgxoEW5FYj6H+TtPKvEc2Mpve9mQFSnr6FL0Lcer8PAQ==
Merkle root: 80de158564b7616572ca0c0059561f6ec90cd5bce49a388e61df989f3f6f2a86
Merkle path: ["0ba2e34939c19d318cf723ccf15d3d97caa39f437c5987bef94c60a00eb12bb5","e4fe0674da75a993a86e5b9b2624d96185412b466398142edc53b435a796728a","0c2b9b99ad77cb9b8bcb8b0fe507e10eefe8337fa0f1655d422023d77a29d326","bdae793e91066d0e1e381d22c990d769081d6eca29a538dc9ab857585a47f2c1","5b79f725656d9544dff09451febdac9fa7a70b536b7936ff13f584b664a7c68d","f0de8c80931bbb49c1e59c2e599be8a5d1897e97f78868eb9708fc95db493f44","e603453dca10e85585af2c538e41ae056d2d358844312ed546ea131fa0a3a860","450ee3e019ece34f92ac58ee716692704c8fb9d70c455275efea0154f6f5f650","bf33ab2a7e05e56270c053593ae14fe4acdcae46095412ef35ada7658095ac3f","0c2946b5932b5505827d214fc97aa39a6a7054b07ba0bbb9fca8803711f49931","8d5894daffd6dff13a35e221a89bebd1cfddd8e7a509dfebfa987d62e5e6170d","a555f13c6c97c193df7dcf9c4acd43c29481486a25c64863a705825840cdab19","c0d3c29d57b890f7faa23830cb86c1df3b164402674908e09950b515624cad23","f23007ee336c6a9903bdec729de4dd7e96694a7e2f1071f195563e9aff8dd97f","68889fd35b89925b8d265e65260618471cd9c2f5458718fde3d6cb3829d8f00f"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2513802575 · entry 108e9186e8c5677a9216…
Expected log hash: 5899b5d0ea18fa3c879147333708054c2e3cd77662f2b6f633aa3b5d5512bbe5 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":"v1787121142818","kind":"published-quote","locale":"en","page":"theme:meteomatics/quality/en","quote":"Very good weather prediction","rating":5,"review_date":"2026-08-03","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 (80de158564b7…), 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.