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.

“Protonmail ist als Dienst oder Plattform ziemlich mies.”

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 2514496096

Proof data

Record hash (SHA-256)

091190f0e8f935d2a16b87e510702063a30440ccdd27246fd73713d109d723dc

Signature (Ed25519, base64)

4XMt+xV7KZCIeMs85GbMssNaC/PiCQ2/BfukmqCLmcPIlKBBo9r/kOHCySZx6fqvsN6YVRJFF267SqJA0L78BA==

Merkle root

790984da83ec061260aa072fed7636f9dedf91964fe0be93d7a7a622b2b5a92c

Merkle path

["090d50793a4af1092153dfc92596681ed0a80c38c88e69d21f5ab698e7708f18","1f4246fd8666018c116dd63c3150f25596676bf13dda6a0e8db4c8d1b686b25a","dd6e5f4144ce81ab3f15ddb3d5866f3f5aec0535cab65ee77e5d47eb36922c9d","9327953d4f577a35d9baab18e68b512ed0c4a3005d064b05d7e0cdd5f00922f3","6a9dbb514cf934c557e8470e3f47e9e53f09475f6939663f94d12ac83a8eaa86","9b5075591d4fdd734ceeedddec70bd1a53e5238de7f8c8e684cc6b14c5d79971","4f5ee765b87f5aa32c2321939ece417268f1ead0cb6d7b1a3d25028e51ba4322","cfa766692492402c442b007bcb186e3f71b4c6b8f507fe433c4c19ac706e8211","bb708c6b51ae6809a3533b62d234a7406a9a1e91c2801d08c43cb57fcdb68ec2","cace77bfc47f323aab46161ed43e8d787e6721fa1dbe4d7f4f9a8c7c8dfdcbd8","6304ac71a1b2f52f7b9d71dc18128d29685543003b3b63d20b4c45faf5063076","0ab165eccc945f726f72a18604e160b33092671c5a22e68c21815ee55c9985eb","03448bed473af8dd9cf28b70fbbc04f05d3dcf46211926aa98113fc3caee3267","b5732ea5319a80c00443397f423c046c357d98fcdaf87d445516405ed0934bdd","c7feebd3045cc2c03d87ca1241b2d06259ffad35db645c59ca3c5ee2004a8947"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514496096 · entry 108e9186e8c5677aad27…

Expected log hash

5d2238ef768473286d75355f523ab94503f4ccd3d25e17e9efb265aa0f540183 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":"v1787129810322","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Protonmail ist als Dienst oder Plattform ziemlich mies.","rating":1,"review_date":"2026-08-10","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a79fdb35d21d3393f683027","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 (790984da83ec…), 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.