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.

“Despite using the digital services, I received unwanted phone calls on my private number.”

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 2907673729

Proof data

Record hash (SHA-256)

320823ff74bc588599c037ff7306b418e1a1b3e7d17dfcb76c07d72d9fd56b99

Signature (Ed25519, base64)

r6Rcjnc8o6sN8dpYVr0UJvKv5jQamjlHmAD2w6OT/DtFKvciTOJxlY0euJTgS2Yuc4nicAdFhNtobVCg7N1BDg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["3204cdd03c8f6ac3e23d5269d8bf68b9af2ab67d67cd606d8a814263773da459","9f3890c3622d5aa2c0d1064053c77fd053bf4954e6e8325f62543e5ed999cdcc","06beffa518812d053dc198de726a55676c58868065e83bc20e0569f6ada14830","203ff53340cfc615ca54c9fdedec24458532bec7f853db79eef9db5922dbe505","b59b348e76f50695ebd2a56c3885c83a13690e12eed6819662bc7d93eb2c2b8d","0ff9cc5d280160dc0eada075ed88a87194300140f6c58c36ebe56f6945a2ad1d","b01e0d5c473fb4914700c3b79e258fd81ce949c5c69c1e3a42fc8194c886a6f8","db36e38c727fa8fa8a1ea3a01bdca4ad1ba417c93523a6f534af3e392bc89568","47504f5d0fc8a78e339b4713b158eaf28c8a241eb090a81058f94e36da3ac5cb","6aa9f68c189b18c9f2af72d9880d9c7e1a9ea3d77c5da498c41df53490c7f9af","e0f253c731d9a50fc143ce3dc5698955a6cd944ab369251d35139d245d1f6088","c7178b4eff2fba3e523e57ffd27d883eab0b92aca9ab4febca6b4f95755695c8","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/service/en","quote":"Despite using the digital services, I received unwanted phone calls on my private number.","rating":1,"review_date":"2026-08-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.