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.

“Der Speicherbonus (+10GB/Jahr) schließt die massive Lücke zu M365 (1TB) kaum.”

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 3668944551

Proof data

Record hash (SHA-256)

0174433abb8e28a57838bbe7be51a8fca0cb9cd88dfa9424d5145b67206bf78e

Signature (Ed25519, base64)

nP1HK8CxnaZbk42tD2N2K/++IRh/+Sb46D6m9dFGI5eIRxKIBaNJo9JopVwmPd8DcMFW/sYHlLY8bj0ggkQJDw==

Merkle root

d8f145f4dd25b18e2b87daaf2aeaecbfc54faf99bd3bfdd8f74aa4efc5886bf6

Merkle path

["01780722dbf7c7d79c0c11424d630bffeeeb6f582ccb85c7351533706063caf6","ec76e6ddc9bd16739ad2ba1118d4b5465dfa673f49b54b5d9e05765d84503fdf","a54508aec10b604eeb6557c7e6c3e194fd5548182850b61e4adada5ac79567f5","f524ee5c57aa901b5e60456e8463e12cd1d22dff0b9b9abfe151381d0dc3a061","8c5c6ea3eb277f4f65b988d81e04e087edd8605e10cbb2d472c734706a0357c2","6f90b838d0f7bd50dc1830bf9f0f9063bf3938b4c02c8026788c01bc0de786b4","eae60964243b5ef5b3dae7556e073e4da709c40f58959742e42bb7cb0790d656","17afcb2f2d5a853ca8dbd85c6234cc871d99a0f7b8926fef76b62575321a2dde","c49b7602c10b14e0552aae42d086172f8da3886a97519fb48bcac531f94e199d","1b5e51717df5dbd79e213b899204d445aebc84015ef81819b768505201356e27","201d44a330ce43627228498a1a6d2056de77241b782d03c819087e11ea8adfec","2e900c12d34400e39fc8c3ebb99077c31758e236ed2350484065df834f416d2d","4a105e509823ad7c5361d9c34172b0c0d78481a597dbc352d26fbf6361d15520"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668944551 · entry 108e9186e8c5677a0e24…

Expected log hash

29b4e6eadc957394341c639515bb23b43b99093d34033c988619822df54fe84a 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":"v1793707472796","kind":"published-quote","locale":"en","page":"brand:proton","quote":"Der Speicherbonus (+10GB/Jahr) schließt die massive Lücke zu M365 (1TB) kaum.","rating":3,"review_date":"2026-05-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (d8f145f4dd25…), 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.