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 had made me fall in love with email again!”
Google Play · 5/5 · 2026-08-15

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 3240422411

Proof data

Record hash (SHA-256): 529ff38d5c1a28fed39fcc56c8b1af0f528224db3a72ac34aee2b4437a7529a8
Signature (Ed25519, base64): 9OFOs6ifOx5Ro5Rplao2t1tbtYU6mdFH4e477RKj6e3JM/ucXpTsXtAGrVewoKHJ1nuWUjmWOVA90gIbs4TMAw==
Merkle root: 825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9
Merkle path: ["52a6dad1ddb94e9ddd81136e953bfea5fd1aece17d304e4c4e2b7e780a929a90","17dac4766cd37a7330ecc80c6a61b35261b54f6acde7a682683aa7dc5bbd5102","7d996bbcd1bc12b05404753e1058f6937dccb9214d4f2af5690aa1027b7e2191","75f5547f4017392ea649ebd26975a55291b8784d10f015263e0db7890ef91baa","cea42e2f8125564dfdf38eea3ee0dc621fcf6150aea8513c240eaeaf1f2098b8","3f1d9923e6d52eff1e2aa3209e20dddb8d65ce5dcdec2cef284afdac132f1069","d70ac570c846ff8b404ab40a0f92842f4d0dce056fec034d04fd4a0122bbb2f0","b0a10369b68a1998a462f8348593cb1627d5cc31984fe02a207cc99222c32ebd","fd5c3d3ac838e19e7b9a352963a7600555e9e63c5cd3c9632b1de97cb64142f8","d7e33ce88bd04522c9d3cecd828c2da64793cf9211100057a63b7ead77f85c95","c8b7d8e613e305123bcaa9af1ed1a7d0c72af972c727013e1367bc0e5df8173c","0526b5b7adf235fca820e27d7e9bb58328407474fe694c840500fecede0e4f46","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…
Expected log hash: 8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Fastmail had made me fall in love with email again!","rating":5,"review_date":"2026-08-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.fastmail.app","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 (825dbc6ca55f…), 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.