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.

“Unfortunately, I missed the automatic annual renewal”

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 2776103867

Proof data

Record hash (SHA-256)

3c0432781579a5f30aef8a0d08f4c552dbdeb7ae558830fd68b454ec5d9fe59e

Signature (Ed25519, base64)

BiqpGw/oQxeZmZdxquBUlot0NUxDJ+QQLeix/kr5K+hkxcrjkkdjvo2keqr76+F5EuoiwHvGvGTrTwjswVktCA==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["3c019a3d7e8171739ef7fc165a74bf6de117a4b1ef7c342fb136f8ce8b894c1b","72f223c547c48be5ef55adbf134bb595808592d7c8baa13bf993b0d2cf5b8537","d5801ddf44dac5dbd9d41b0f000a55e42f52a83ff4d4ca0b45bffe40321f20c0","2cae5f3fb497711c7f01203a24f1a8e67f699ff3b99ee611cc764485075d9985","390742e551a84aa9e94f14cbd491a55ace00badb98d28142e2a63e563decdf89","5d0e84292846cfb21b1d7bcccfa6fd2f04882dff780bfe78ed5a7377d19eed28","177f1aae85f2e42f1bc36f992e105d8cd4b70b4ec956eaee7e15149d70bb3445","61505cc8ad117af851e61df3932bf0610251dc103b3f4c1be62072f39a7ca193","271ddb578dc4eec0a06449bbac8cd7c0af7008d03bd8b72cb476b3bc84aeaaf7","bca76ff80695af762de473a92c776307f09e202f28da19d7f0be9d4ccc52f235","b4efe8d72d913688f1a64f42759a85b060555bf4a8654df22864f1b61083f1fc","cdc9b547a66b32bd7e3dfe1dc71a93d8d8fc3b198c1af0cc5d7f17b576402dde","aafc4d7abd1fbd48f01758db3e1a1278331dd8c09b348c20be15802d81136ee9","72f96e42060ae616ed33b8fd6ac687c1899623eaa8a351026bf33e2e7a041d34","e60c2274998b06992577796b6abe86bec144203fe960878f7951a3ae12c9e532"]

Anchored

2026-09-10

Public log entry

search.sigstore.dev, log index 2776103867 · entry 108e9186e8c5677acd4f…

Expected log hash

2498329b7eaf275d309293dfbac35d05dfb8a55c65956add8448561c05945f28 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":"v1788848066028","kind":"published-quote","locale":"en","page":"theme:surfshark/billing/en","quote":"Unfortunately, I missed the automatic annual renewal","rating":5,"review_date":"2025-12-30","source":"Apple App Store","source_url":"https://apps.apple.com/it/app/id1391782046?see-all=reviews","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 (4dc0bd79ba3e…), 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.