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 couldn't find a way in the Play Store to upgrade my storage.”
Google Play · 1/5 · 2026-07-11

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 2542879916

Proof data

Record hash (SHA-256): 0cf091449d9504a862775b10880025ce01f37b9c627f1c747164f2ee35971c4b
Signature (Ed25519, base64): E+rqLR7SRoeDLjXCITmCVDLpQBlhQLJcnI6Ihk400mCxAocu4L31EjXNs9QcXqCZjfpUAZ9D72IGrb7ur1ucCQ==
Merkle root: 681242bb8cfa94d3b60cc06de1bbe3e5e124dc1675276b11df0aaabc9faee58c
Merkle path: ["0cf162987239c4b6e16e80a1987a9659235a0fa8793745c6b15487e36689cf0f","d01de7ff719cc19b9926053518904e4119f37f63b316dac4270e16bb067b96b7","42ac8275c4523c2b25f8bf0f2541652d1e519d83709087e79699c1a0b1892aff","a856befc06968a4a1ae275695b3d1002ce2b77b4a6883b4fb82262e4bf20d205","521e8496d2793822c6c9f35327cbe9c5078b134096d68144f198b844af78dc1f","10ae9b17272ce713d12ba6547ebbd14de248fdfdbdfd4337642dbc14439eacf2","532ad0cffb584e9c867b1a5c160929fc9fccc0a342f40a6f6d9c8b58490a0c6f","8a548fe83069757f5f177f6d0b7b1ee25c02f399eb76136af6771f5f11bdb876","a3f9419c75b81e58c329f950440954ff8145cfa6377486a5999da3b463373c4d","84919f109410ceda37ee8de45c5e7635a259b588031ebceb351d4c9e65f80dc4","b1e3075cf0e6ae7cf171f287e766c9a06a738cacc4a4b50387d8bc7cd16c7ae3","37dd8004f747556e60a45fe69c451d174d47b16914c67cd7925e5ba2b1ebfd55","153ad351563f9e4de319dc32f3ff7774e0dfad0704c150aeeef6359dc7f03444","018848b1e64bb342ebfcf3461012f852a9938ad88239203d89ee764353ea1567","78eca2193b177c5ad7546ff5d365dd6cb79efa278dddff5151740888f319c0e5"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542879916 · entry 108e9186e8c5677a2329…
Expected log hash: 8337812f20bf1207a3c96eed87ab975d7e92ac1421dcded24507b32e456b788f 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":"v1787282728402","kind":"published-quote","locale":"en","page":"subtheme:proton/ordering/setup-configuration/en","quote":"I couldn't find a way in the Play Store to upgrade my storage.","rating":1,"review_date":"2026-07-11","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 (681242bb8cfa…), 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.