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 costs are very high, though.”
Google Play · 4/5 · 2026-09-19

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 2948162176

Proof data

Record hash (SHA-256): f71119c3c6b7fe16e587420deedeadd02f8bc8b7791d7b67f1becd96c97e7c66
Signature (Ed25519, base64): nygFdMx/wU3xDfsxhNEAl33DYb2AZ3nOf26fXxYTFv+LqTF8CXqTjmjy2RJfNZdqLtnnMpwJzufKUJJ6zEcnBA==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["f711d002417164de6a0b1c18291503cb6af874a8eca42e0496766a75164f6952","76daaa06048e1396530f16a6b28a63b5e1b4501a1f30581257fb7378de357229","f63b86ee58d61f26808c08ea9a8c16f002ace0ee58e753e4701fe9fcc922450a","cad806d95ff464cb73f2c9ddd8f3fe8efadd3c7b7aae0fcc418545607eb156da","8ed16a2d1545fa0ea5b4facda7598284aeb4f49b4aaedc6a5d55189e96b1e51c","5957ca904a3ab62ac98cd9e0bedb490053650970f6e15abb7d71d1d548743fce","c7911f658b8ffad412b2653e3a739aeb2b948313fc6de0ec23df73cca3a01744","a22f23ca53243b92a5d281de66fae9b873b7c49a6da39a2137dabf4b1ae0d3b3","4cb9d737a48200edf680454391148f5a7aeaa7ae40bb7e588ea23f8825ebfbe8","dec34de22d58ffda9d721d248370bfe8679cc060c0303117817cde010304106b","cbcff8c764f5bbe7f5e76017c06c97692cc9405ef5d5b0e43636191e4b6b578a","dba69485f1d01b1a1a0b025a8d16147fd90f9473b16d200f26c0a34e7aba2d46","82803ae7220a028dcdfe85032be69ef5f73bd7602fcbe12652ec0c9b240ad883","aaa7b399bae700ce8013bce7d22a5956b227f2e0adcc638da32f9fc5e72da67e","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"theme:zasta/price/en","quote":"The costs are very high, though.","rating":4,"review_date":"2026-09-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.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 (539721061967…), 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.