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 is a master class in interface design, and makes Gmail look like a trash heap and HEY look like a toy.”
Trustpilot · 5/5 · 2026-09-29

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 3163352270

Proof data

Record hash (SHA-256): 81c1e5c14c2765ef03ba2f1f3f344ddb9426d979c758724c0f1b8b5955846f27
Signature (Ed25519, base64): 6rrwdl0Poka/BZzcqFy9dztaBVTwF1u2Q0VzpOgB6ruYYyP2OP1I1y4l0h7PTR7ABMZTVQFY5yVllqY2u7fgCw==
Merkle root: 784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8
Merkle path: ["81bd77c675b1b6feb474d48fa0a5786c0c1775fb6453db5d323abe4d83b0718b","34c86d2ac26cf3ac9faa17b19b109db552f477d9becf5c5f55c7b9e89652ada2","4e497fb126fb48e2c46401a09be76c18b7d7d93b484c2adbcab1f65eeb711c01","5f31f2ac5da383da64e9d472422334f82f0b60191c6564980a671ee12d605052","f2dd338e12ec2849ffbf7a0f183a9a3670a976c0fae0c6f508084d925d5e39e6","da1aeb94c499b577ad1b1fefc7d52e43da81df2b776c7ad0fd19d337ea62557d","dab692078426cb52331c803afb4bfe38237878d632ef442dda0493dc65fcc859","48f49a58383db4fd740aad7a9afea9859082130cb4fe849a461cc01165411ef9","114639c320a489c434a12e0d9895d4c16ad128bd2210383bc6cfd9e3113a2ccc","af88a8d462c0127e4154a82c0941a0e510a48297ecc5222c32f31bc0f2ae4cc3","d455299b0c811efb215c8ef8d82c0d64b22aa695d39ad95dea97c943e36c8fdc","16fa5ef2aa5a30511e875bd79d3649a999c3c331f575a40b2191edb1aed002d6","76d400188c58a939fb5674b0c9b84ba0bb8d5bb91a670efe6d7087f7cfcad90b","c0acf811319c30afcbe8b77293e97c6cc46544f39bfd9b01931c88a06aefa19f","5fa09e3847513934bffaf71960ac2a100e20422698698ab1e19a4fe8ac133514"]
Anchored: 2026-10-09
Public log entry: search.sigstore.dev, log index 3163352270 · entry 108e9186e8c5677ad020…
Expected log hash: a3ae0badac804d14d314abd0e71726d06a96c43a3840dc1d63acded9268c461e 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":"v1791543790412","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Fastmail is a master class in interface design, and makes Gmail look like a trash heap and HEY look like a toy.","rating":5,"review_date":"2026-09-29","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6abb071eb7feb58620359c1d","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 (784ff8fc3c42…), 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.