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 also could not delete any photos”

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 3668531329

Proof data

Record hash (SHA-256)

0b4bfd168b2f6d04a183b379ac7a8f6f27cd95e2b795f4c129e51f69189a97f4

Signature (Ed25519, base64)

H5X6OTSbWgu5ueyqI6hHvvVIs1cg6hQQH3hjiBbUF36opnKywFFDBfFz4Hy2E60zgDEH1bi6+v9UJhPXPCW8AA==

Merkle root

3b072629e9b16970356829c050ce27926428f47e05244a6512bb40569787f050

Merkle path

["0b37fa30513f23693f260358cf8346541bf6ea19f2e7ee517094485f14ea51ce","346cacb53974e0aeda85755de1d247f93fcd4741a0db3bbfef8d690ecd529780","8d8e740445ce890f2c617d69514f7bc3f3972f89dd5bcf910a52efe0a6979030","9fa6b8a185cb8fb48101abb3bcb25c3623d8bd438a02a879882d0ad379731d5b","2aa30a43f07dceb0150042c9ffe8a6c70bb1fa3b6d7783debf6b100837038412","3c7ae2ff992313553a641b510e800ef7f468bcb5f37635bf89d6193066df7abc","16cb4426605645c328ae1c6504d2d9a2d310264fcccdc7761a969aea913ab5b0","39261de08205176798758f5f58baa2e7303a22d98edbd291707a47f052c28dae","4a680cc6fb73388a93c53e603f5d1ce53cae9ff95336c0bb0eeb4265d8c2ec0d","55bd3100445cfd4a5bc3ac22bda01bb4059e5dd01dd623b13b9970aa93864f7d","931304e07f112ff878cf7db58b20cae35948550329443f203a6cc9d0ca1f7abb","5ce503796c51bc55f222e1ca83097b0aafcffa9e43cbc2fca3c86219ba57a7ef","bd647c84f5a5709c34b7ff67afe5db551f8d36ed60e852beffc039c8af7bf210"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668531329 · entry 108e9186e8c5677a190f…

Expected log hash

70b428762b7d47d774fe78d442b8bb17fe4b721cbf1b3e9cb1fc9c9aac05be8e 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":"v1793706202681","kind":"published-quote","locale":"en","page":"brand:proton","quote":"i also could not delete any photos","rating":1,"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

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 (3b072629e9b1…), 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.