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.

“the number is not recognized”

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 3665856061

Proof data

Record hash (SHA-256)

05d98f0cb03e3c73d75d2cfa9d87e568c71a09c91540ea17001c06f5e8890b67

Signature (Ed25519, base64)

098xJhQlwDKS8ERA/zw3JUNWmEx6U2068hBCn2N87aqDkK5+zu08nJBMi7IVOcpJG6HEWWK6DrV0tVcJ+HMCDw==

Merkle root

30e6dec0d0882018a3e7bccf18a3222b7daad8045915eee7523618b7cf75b77e

Merkle path

["05dbf70fa786007bcdc85780c6d929e7c03094e96ff8dd72c11a0f4c8ffc7e9e","a425fee0753b7141d9f9a72f6d5924462b7c43f0d67e1b2a8db3eeb43d7dda46","80d7f446302701415355672a4367ce12f956251ab4a062494ac0690eeedac11d","2405c1514eb2a3112d8ea38247cebdf1f31c067b06dddb26690070e99f243517","19e2f3ab4525075f7ee4fc146b2d890aa2bfbbe95f5b7f24097124a8586ac5b8","c937825317bd6638a1eb16a334231b60191634858eebddb134030984bcba6605","1d86aadfea026debcc16c8d5e006d8f837ce9db4b0bff849363201df40c81839","8262347d394a3701aa07326b97b83efa1627445f5e7623b30c89caa18584fd7f","36d413b024033cd6e1dac3be3c5742dfc0152cf15096b69b483ded4c7c2d8d98","5118ccf7e815cde83a7a81251633fabe8fd16f8c5ab105e15b1895a648804182","7fd72173f45524d175f6c633973e8c30e8df12f70bff21bf410e7b33944e0ead","912fcc514d19cd9cbe0a1b4ab754d197504acd67486645ee4aa172fb248dca00","46692bc80fe953f4d8d52179b535334176c04357301aae92a75d811dbddb72b7"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3665856061 · entry 108e9186e8c5677a72e2…

Expected log hash

ffc1bb1abaed68d6145f4de3e9055a9ceb42d7f5a099d941c361cb153635fb0e 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":"v1793699634728","kind":"published-quote","locale":"en","page":"brand:proton","quote":"the number is not recognized","rating":1,"review_date":"2026-08-13","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 (30e6dec0d088…), 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.