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.

“I installed it because I heard it's much more secure than other cloud services!”
Google Play · 5/5 · 2026-08-13

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 2611910343

Proof data

Record hash (SHA-256): 07f7365c5c48333804837e32074b45caeb580674fb82e82b806c6591fe43c170
Signature (Ed25519, base64): qhTVs2YUSoGL99YtkBMqyL7zXy/tuauJwnipkBY3EsMpWxw6Ncf5rTUQv3sEv7/S2m7mLFGSMtNybsvhqNbaCw==
Merkle root: 78886eed79c5c55077432ce3df8d075efabb6513370ceff84d7b706b9eae04c7
Merkle path: ["08049d6361971fcf05133115f0935885440c5d31ef0bae00ab28367e2637a98c","c6f0c869b7835c05899bff5632173f8685310850bf9ca77d056487300d148d26","f5f7c8fdb661436a3ceffa2580a2003e0c16d3d8437d3ca8f9266dc00149b4d3","154eb915815f2efd91c51e0daa5ce36bcffe17f09dde0fcb724e502bd7954b22","4109a57a351e51552752980b826333e0bf938b5307cff455f407965ec70bfe2e","1908820f31b9bf4c51e635e64f045d19a2068ad1253aa0dd5c7288b257c05451","8870e88adaf39bf2ae48e51713e47a52b410a0049b81a3450061a33cb2be13b8","73d63e8bdd10f4d3f079ea89c665ae3bf5133c281398e6b2618c83df2f798d7b","8bc486337625e69743a9cb572578a51252b15b1efac27df02293cf7cc7442231","934bcba283c962f75e1c521fe9660843340cb8dd9ee7c1018850e33262e09a2d","f2316a6854ff9fb83b1085d3455d89106cefb01f2684c4489025e5d0a411d032","d91421428fedd26e7cecce1d5e33ad568bf29352e514102640bc5ad56ca56783","9fe048f55ef1db993b15a6e86f672087aa43b92600c87c54204aa5032ace339e","dca3255210bd4138ad43ee9195c33d4e1bfb62117fe1834a1314b7522fa9bfae","4799bf594f7e0d9e563de0da432e35b6bec9a5a67d166463ed76ae787b7b69f7"]
Anchored: 2026-08-27
Public log entry: search.sigstore.dev, log index 2611910343 · entry 108e9186e8c5677aed98…
Expected log hash: 357f342aabcc9f7336397f12ae873d9647084d84f84802d1a7af0f5727328ea8 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":"v1787796746663","kind":"published-quote","locale":"en","page":"theme:proton/quality/en","quote":"I installed it because I heard it's much more secure than other cloud services!","rating":5,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.drive","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 (78886eed79c5…), 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.