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.

“Their security advisory e-mail not only told me exactly what the problem was I was having,”

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 3139760477

Proof data

Record hash (SHA-256)

7b1573b5e155caadebda99275c46df147e7bc92a17e3074586f152f72f62cf5c

Signature (Ed25519, base64)

FytlBEb6pnSw+KPONai3ts5vLIHqxPxXCIEn65ErRxoApu8gP3+mM1bbngCuqpHuRYuJdiDgYh8Sxw5rE9iHDA==

Merkle root

49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2

Merkle path

["7b1d539a4d520d364ca0152919ef2738bc79c863de4056ed97c6f2ab99cdee08","cd16d14a6a6640ad87287d77fc5f53958c035314d2ea37bcdb21b8a6261e16fa","ed4b02072863fad37385d951e572ddfe964657bd28b5a890a6e2dde161a4720e","8c5bfd18fbcbcab291214faebd1bdb3feea27194c9cc17f531e08c9bce49481f","d029264e9e4419ff27ba6524d5a21acadc0f50f9d0a175f825fc530b6b206d2e","f228f3142aa3d77e969d7f4d72a309335ff0b1a8b37d12ba05691a39401ad789","d6fa46ae8f5bcf2594f48bebc923f4db5c49479b59e8a99ca7a4f8c707c85a3b","2eb1e2fd46a9096d7a70eb31f4d7cd5cddf222db67b550f760a21c6cd63b9f1a","11a7d031e5494fb31fdbaab3ce9f5b1a08c1f181c61f4fea066280b32fdbbfc3","bac191a6a63935394534e8af8b032a054cba85006ae4cc5a6180f2bbfe9f7d08","e8352b08697a89bc5882b4f6f02db1d3b67b01405da4a821574952588c930ed8","79b266fef4387a3eb13229ded49c020294637e97bbdb14afb5838386f7a6d53e","111d2d0cd89c2d53981ba81e6a10a0e3f8f1be927d4be6d99e4f29e2d9c3ae52","541a456de48928931fac4c28e56562983bd2f8cd0c9306116286df2e2f1c9422","d81f506ca96dea712a8b56759200b270fc625cf496d323ded3475eaafeb2d916"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3139760477 · entry 108e9186e8c5677ac88a…

Expected log hash

d54b6e5e20903e9be29e6a5973227ee9b3dbe61bdc0fa6481a5788472cd5976c 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":"v1791428432986","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Their security advisory e-mail not only told me exactly what the problem was I was having,","rating":5,"review_date":"2025-11-08","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/690f4fb435a243acfec56a29","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 (49133e6803d2…), 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.