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.

“This makes the app very difficult to use.”
Google Play · 1/5 · 2026-08-31

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 2789279696

Proof data

Record hash (SHA-256): 8d684b6044864fa8ac2d578f2c51ec6bee987a884ebf35f43ac66fa0ce8d61e5
Signature (Ed25519, base64): xePVllnp95m204Y0lLLfyZkCqitH//FNsLpRAIbEUupr8R4nAvjWP9bY7KfGa35J0zKHW/OEDKXuYPIvoppIBA==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["8d66febb1ca24379b164bf600361eaf655d5b85860fe4362b128f310141b8003","6e659a0a1d02e838e1a1233a29ed5eb3bc666604fb70aa535b591ad0949525b2","9320989279b7fefafc79b0e2b3edb101405fde704fa0437ff3c822b6209db883","d37faedc9278e295fb88e23cf12295e7f30447513415dd96718c45d01ef07d93","c8ff8ceb86091015ad0e77701b3babfaf1890efdc2eefbdd289b059c50ac25f6","3c02499056351799b8821aff5a34605ee2e284acbe099c585327ac42469565c7","b7fe4bc4b9925e71c46ae523fb13bdcbe061d047fddd94e785f5702a3d764721","d5aa1bcc4f79e089d2c262467603484848948db04ab5b4c94989cbc1bc00f4f9","8e275d58afe090a139fd90f8e374de4cd2abd78b4d8c3b1934c0ef48bc4030f0","24cca21608d3145f5f7c3708abc1d7681b770439930263079b5a75b070cac0b0","ec5d08312c4faca63dc7627be1ba2a3702a2b0fd2f002f14f7d74685eb44c040","ed5206c0018c25fc911a5b83d48a4b07edf1ca07ade25d7e56162349167c269c","6772a6b2cfb742f4baa103e424787f6ab6a8cbdfc294db886f1451f7c9752077","90e3c3ed08ff9f4dee6683cf95bfff311f4715cac07e97ca75ea5b9bcf13efe4","01242865574478f13dcf9d888236d7a907264abdb87f360db7db06de0945075a"]
Anchored: 2026-09-11
Public log entry: search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…
Expected log hash: 05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:fastmail/quality/en","quote":"This makes the app very difficult to use.","rating":1,"review_date":"2026-08-31","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 (97eb1062a862…), 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.