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 tried to send a email to proton support and I got invalid recipient!”

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 2515345787

Proof data

Record hash (SHA-256)

12fb6768af5abcdf82806c74e71fb4fbc876b783f94c67a5288085c203b74a64

Signature (Ed25519, base64)

PuwHGd/e7EaNIXXhvknzJhCEJMQUTzrFj/vavqYrCYFAIeCqST4CSQ0Nzry+7OKvUiKeMm11TOfrUnFnH0DQAQ==

Merkle root

e61c2598d4d03770603e24740bcc427581e87bcbeea2e56dc34fd81a9f496465

Merkle path

["12fd309c4945f76a09daf632c8f24cd1cb5e35565520bdb09ceacb26fcb21514","054b9d98456fbe232955054f5340c2d6680d96d9451552549f61a8266f29ef04","15e7453baa057b3c27c5be51c2b6e1a9a8d2f3b0811ee90f2a08748972e19dd3","39988c18668386a1e9c218bd8c501f3638e8064e7ab1a5bf98067b48604ee8b8","d9ffb44a14fe48a767f572e2882d1cee85f0b785715125e25dd716696496c725","361e392e84ef1e6e53d6e67b2de37ff7a40d5f227e7e9d52132a1b93d38f7e0b","191530a3d15e801e93c9794b1b49d789527f114b0fb6654fac34e4c6b42be540","fd3453a111c604a3f231846c2071da0fddd1bd311fff467fbe4833e09e50880d","ad530025b86296fdd701c0381d849af8bd83dd574d4697a14e2f544e938cb2a3","e2cf7e3660d7ed834e3adb3e1fead3a535235f12a1a4ef38692587ecb1546eb9","0355257e4917e000c6318af3e8c062e35c99e19d801c93fe03c534557ba3b1e2","82c59a1f070110c8bc72c9d5838bf722a464300d8665e875d27340c85eefead5","40969aa912cd897f062ef7b007bf23221003273332528476c6c56656ab8df18f","c34fa5ec75d6e3462dddbe081b828d412a3a575b53cbb348f7047f6afbe95056","11a62e67a9d98d919358ca5b8855f911ccdc865f14b203213de31adc67657443"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515345787 · entry 108e9186e8c5677a749c…

Expected log hash

d9a90b5e7311041bf4315991ca7f2fbceee461daa2ae70a8b8b95323461a31cd 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":"v1787140356347","kind":"published-quote","locale":"en","page":"theme:proton/communication/en","quote":"I tried to send a email to proton support and I got invalid recipient!","rating":1,"review_date":"2026-07-27","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6771cba00b98fe70dbd64c","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 (e61c2598d4d0…), 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.