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.

“I'm almost mad that Fastmail is so good”

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 3258201873

Proof data

Record hash (SHA-256)

3832c62099643e80c7df41ecab83e4ef1e7ab64ecc8fee676308552e1d058e87

Signature (Ed25519, base64)

iMmDmnWFaVHHBpI7G1Bh1FWRfRQ1zf/zd8gVQoOfanGOyI+6zAhg1okcTAQpAaZRWr5ErSdlbIFCfaMU3HUGAw==

Merkle root

07e2d0de1409df9008c16531abbe2f8515ebe8e55b87a042e18a21958771618d

Merkle path

["38313d2aff3aa3eb256796f6aa05886deb0afd5c37b544e451003cb0a01ff579","f41c9bb044f2dc0a3a538eba8fdaf52b2795977dc55936fd3a99d02d5a6dd116","1d98b0290f95d54954fc791e747ff6a0dcff14364156994c7ca0e62a3480ecf1","b3fa64f5a0da036d3f8ab9437714d411e510fe69a5c09afc9455c231723fd16c","f1f79b6ee6e7d81a2e1120a251b738f4eb402000c2a46e6fd745d0c84d2a7922","4f0aa1acf165fa3810135d2fe1b859f82777c76e4e9d1f80d6293ed15592c24b","beb8f165bcaee174c5d05d6bd3c046445e9ac7526841c2efd3ac75015e42d6f7","50715f2e49ee84a548df407c5d6180c2a6e81cee108580b9d1a53fc3346d49a7","d5165d884dae662b2383776dd11429c8fbc84ecbe44a483f2fc02329d23b4c6d","c927681cb180d716402821c2b688ca3057e39d4c904b20c94694611c1813e0ce","3d6a9d4ec784580804def1aaacd86f23c4ee5a425d85c3674ffb4b2756c2ee3e","4d663f5926241f266352195a33380a37df27997d5729c36639e1e95dee72a508","48799695a25196e19e6c0bfac80015199da758df0acb5108e4c517a5d6bc016d","fd7778befb9f979134b4d8a1dfa78827e64c761abd83cab9d5ecd5bc01d8ea14"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258201873 · entry 108e9186e8c5677ab04f…

Expected log hash

205b794967d70c4ec2534ff3766e47506acf44c7c68740049459394876120dfa 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":"v1792030899870","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"I'm almost mad that Fastmail is so good","rating":5,"review_date":"2026-08-25","source":"Apple App Store","source_url":"https://apps.apple.com/us/app/id931370077?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 (07e2d0de1409…), 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.