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.

“better than Google Authenticator”
Google Play · 5/5 · 2026-08-05

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 2681429093

Proof data

Record hash (SHA-256): 09f749876a453b3fc5fc55e6d2edd601544ae67acd9ee2af7d3c637cc769acb3
Signature (Ed25519, base64): xbjVKo2eIjCdizGN4OTuRxiMmwbZO0QhqRMvllCWjBYV1bfBEUpN6cdDX7MpXj3aqRC+7PeLO7ax/ckJQnJLCQ==
Merkle root: 49d75a7972dad7fc75a734f764cdbbaa106268e1ea0f657aa8c6fd89424d4b2f
Merkle path: ["09f7a9c76fcb1bad08d5b5645cc3942ab341a29f51c66c59df47714510d96ee4","fff039bdd7fed6860e99d78a807cc58a47ed2b80818c1f541acf102a8e3a5126","4506b92b7c4b6d42fd4b00807f3c61c87c0bdbadbe599bb7191d2f84946faad4","faba62f6555d348d92c55fee95f7f13d90447037797678fea1c6f3735a746a54","9a6404ec90d1bab3b455204372d269e8abbcad47ad93e42afe9753e0a5b5ca9f","c2c3a7e91974259aa463c497ac1ad5a87e18eb9c4a0895970131f3619d11d3f3","bdd4d09679ac2d0ad9856566fcb834e2835a41dcf6e57109664c85dfe7c972d0","2f55a4d6f9094064d38cef999cda44509b3aca62438484d3e36fe6588792fe91","a6cfcd457a3ff8aaf141d34d143cddc4c55fbda1b57795a56e731d9a883e9a54","1173c91b2cb25c9f0fba9d9ef1f7dc42f2b63ebaf57db92e1a5817cb8b0f58ad","3e66c9aa593abd6d31a4550e5f3f86a8b21154101d738f82e8be072e185a07f6","9ad764adb090606813af8d981e25ae04fb555663f4dd61ecaf358a138629116f","f930e87d5846215d9d33cbd2f684fd0788c4b25eadd845d1575c3bc708e059cc","79d6c858c8d60d7d4fdeb98d50012f464859bd3437e8887f9a62b641664e5493","75fe8695ca709a884269711b05fbdac24cc3f8930abb9087723ce2c8cfa8fe2d"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2681429093 · entry 108e9186e8c5677a81cf…
Expected log hash: 89c17d1b707f92667072f2c7dc2ae2ebf8b7354f0952f06862b4ec01440c148c 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":"v1788303366831","kind":"published-quote","locale":"en","page":"product:proton/proton-authenticator/en","quote":"better than Google Authenticator","rating":5,"review_date":"2026-08-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=proton.android.authenticator","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 (49d75a7972da…), 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.