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.

“Terrible. First app that I could not even get to work”

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 2684091718

Proof data

Record hash (SHA-256)

083f1479e88d0e3c07b5393458345f95d3f204618dca6df26cafd45be0a81430

Signature (Ed25519, base64)

wTmIojwJTay+EVJSCYcgGDdf3EHoKoV5JHceSPO+NjBtoIFOUZuX1UJ8bozTlq6Wl5xU5GVNu56ZRNTVBpowBg==

Merkle root

9b1b0ea5ff073795652912177ab0790127c9d286c797e205e428b8d86989b898

Merkle path

["084947edc2f72e5405a44000580d4b64e1ffd888d034cef29edf574cc955772a","d65c8d8d1001a21735656e644ae6e908985354568413b1685eeca4cfc0a62222","09dee5c91dcd417d89ab930afe631ff01a16469b2bc1da6d2507ded81f864acf","50ef528ad7a29303d9fa534ee0522bf9d66ea1c75095fded78c1fc914dd41789","ff3582159ab88b3168c02c17158c1c2304f4f13e1b06e0e054cd9e1b78691f42","df882d7197f766410128bb3bba7cb69e71a0725ece7957efc70379aac2f4b97f","c10c804a82501a48a1bfb8c04dd59c4c6717d64490e0530a4fee97aaf40ae26e","fbe175edb2c0f555aaa2b1ba38d9da4a74ce500c2ced046b2065dd5b486019cc","e467c724086dd87ce0ce9f70ec35ef461ab8dd4500077c0d307a5ddab0aff324","4cb6c532187d0281638261824ff9446219647bd27532206c92b4410e5f255e90","334fdbee13094291838e0eacc15b49d44e39d04109f3c471fdae194cb3d6c087","9fdf2722c1e2da99c8523865ab9d73870a5693178709d80815ae462a63bb7c37","8a5809f94963a5df81714440927362d38263f78c79f37bf57de7b411279bcd69","1f2e00fbb60a33ba3643132ac67d23ed080f5d4ace7fdf97cd794367db9dab8e","cb32073192135525777f5779b873b337bde4d009abe6b4aee36e0d683387aeb9"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2684091718 · entry 108e9186e8c5677ac9b2…

Expected log hash

de33a5856ee5b3a69957109416f9fe5937b2a435c3e2583dddb1e30f75d54093 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":"v1788333782203","kind":"published-quote","locale":"en","page":"subtheme:proton/ordering/account-login/en","quote":"Terrible. First app that I could not even get to work","rating":1,"review_date":"2026-08-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (9b1b0ea5ff07…), 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.