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.

“This problem has been going on for a long time”

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 2907673729

Proof data

Record hash (SHA-256)

248efdf58c7f54a8de7491ac8cb4c46af2b03796b77524caea5247a407327817

Signature (Ed25519, base64)

zpQSrnGhPBGaDnlNRP+ZejIgc9GgGzgygl1DfS3rv8UFAqOY/0JcPur6IguUtegR7Q71HBeXchfP7l5RsTg/CA==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["248d25704ddb34337c5edf5d569382c92c0c6743c1580b6a950c7e3cde186be1","5c807c6d25e1dcce5040f12fc519b706c9d0895d0692204ee2f64686f64e4f0a","bf469129f2600244938b6418d744160ce353350d8a73e64dc3e9ac417cd1a425","7f2692f21d2990c181388338bb47ba07de995e51fc8f609d97cdf95ca35640c4","2e8a03c63745d55edf4377cc60d26e04dcd8dad44788fdf7e4f68099214f1278","165db5e7c1dceaab9d24b36f61d31644340d1ca27c132f740b6ea4c0db158f62","5fd86aa973436231291c8c3e6c6b037415fae79552a499480365f965107fcd0a","6eff13b218e7977833b04c1e670b5503cdd840b6caaf4708de9839075a6ba175","3c7a7e418e4dfec93c61517918a371fc86ba350edb198ce0f8d52cd84111be94","ef886141fea96c81af879ca20ff4f93b3f798f849c863d14710c1f134db1bcf4","fb2e37e7dbed9db223f5ad70359e5e571e728737b5bd0b91b2b4db8ad5ca71e9","c7178b4eff2fba3e523e57ffd27d883eab0b92aca9ab4febca6b4f95755695c8","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"brand:pcloud","quote":"This problem has been going on for a long time","rating":1,"review_date":"2026-08-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.pcloud.pcloud","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 (b9a08f9d6d76…), 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.