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.

“Fastmail has been around since 1999, so I totally expected kind of an outdated experience.”

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 3138947147

Proof data

Record hash (SHA-256)

b29b5687fc7247dbd152842496e38f9c05ac16cfc5f8c276f0038d8ca9e71897

Signature (Ed25519, base64)

CQfYfRmYyB9liyPCf2hmuIF6opXexl4UgNDl/4WOj0ufOEE2v3MtI7VCVRY5w6nTv4NLUb6Xt1EX0Gm6bKGYCg==

Merkle root

1b26d1b85473caad1868633ec4c931eb970e81199eea87926818f3f1753af37b

Merkle path

["b29948a51b7749ba801d768f9b43acb4ae3a2b5e372a4a194710f23f6493088f","01de511dcc4cbad57f03619239e0b2f6a49a07ae6283c25c747d5db34eb95501","cece5074799a534fbc2591564086525a78b2c87f7ca449b7ab75f011cd35a497","13c5e7ba454b3ac210a6101c2397b6ac3cfbbc11a5c798be30542c2621096435","7e7fdfe89da35dee92e308bdceb904f93a14fb90cc0a31c8891df33a6a0a1180","bcd79e9c723127d2e7b7151e09e6308c00f49e1c225dbde0ec3c81586cfc449f","7a3945f54ba40c6708dbee831e8de4328ea58802e3498c0d6e6cb9e6ff656134","3ba18e0fab1d6dfbddb2cca73fcb0996e852982087fae79bdb465a38518f8ed7","ba8608aeed803d1df056e73eeaf396519c591927b5fd099c42899de593be1e18","8f2390317e797770956bd24ce39107391a913c137ee2e095f2fc0f13d7a96445","1fe8a9ea53f8a8cbc48f25d9b08f8cb3122cb6b812c8e0035d39eb7cc3d49e24","0928ecf88354927cf77248647655f6a8bb07dea2f6f4911e0f34fbbcb0f1ef7a","c0dee208cfc82bb58ef8bfbdce70ae59669cc0fafa6229438e70014c20ddc06e","f13bd3931ffab245c82268d5388ec4e7a23a41a86394a369b97f89216cceb3ad","06054c91b82ccf7b99bb6b4fcb7c60afa97f93295e6829b75e5bf1efe9493e63"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3138947147 · entry 108e9186e8c5677a2712…

Expected log hash

8f66b765b7efcb11dcdcf57b81c46ed3317a5895f5b870638e23b76f1efbb2d5 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":"v1791425549743","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Fastmail has been around since 1999, so I totally expected kind of an outdated experience.","rating":5,"review_date":"2026-09-29","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6abb071eb7feb58620359c1d","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 (1b26d1b85473…), 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.