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 m'a causé bien assez de maux de tête.”

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 2657634507

Proof data

Record hash (SHA-256)

0a293b2caeb457937d7927945933b2946da6ca2aa115c7a5162a93402b7adc09

Signature (Ed25519, base64)

+Mhk0zKNTA6+aZeVYjna4xTcxtMFPk83wQiePxqUfEsrqnJB+VchqY4vI9mCL0RXwsLR9hDpQGjobPbQo6p3Cw==

Merkle root

f0f62c56ff0378d82fdd48082f920661828d39b95ccd5c38fdfe4483f1ee2ee3

Merkle path

["0a247f999c43df7109cc942ddbd1150783fedb33ee0fd8a7e4a9f36dc5f8424e","45df87ee46c2fab048d2d291a91c039def16d462965b0e75662fd8baf733fc17","5a85e5f17147df7e20f6c08acc4e17033d9164672445c7665b84bcf2d46f7770","4de7a5ef533ec2df69d7c9c962b85d6b0a7c07834a827fafb4a26ac563222f90","d1c07d1ebb43fcc9800968336fd0274a29348e1c26da667263b488d1c30ef4be","1167dc8bd1cc5c424ece21f5e2966cb2198f98be3aab879be1d975c1883433ba","11ac6db896fe18cf5e8eadbdd1b2788e059c5349d1f0b506050c69367bf20aeb","5750ffa9414bf9130481fc93c4018e92c9132daf63bad27f4c41cb6d4cff80b4","c1db0005564391d87e9e9eb27e8ed95ae118a9b69541a679c63d515c52b46721","50896dae5b884114e5d4c1baa55bcd6d56d4b9c3feda6704377fb7b65eb4749f","855aab8b953355eccc76edfe56501656de0ab84a51a651cc37373c88714b48d0","7d8b20bdc86b0c3711c79fd7ebf8dec75f6ed63b7ed9d8d0bded2ce456a7c7d2","f33830fb240c498bfb90ed4544f0b1042b70e0584e260584204d58966911980e","b16027fe2b380a7ac9563ceaf3de6c51b4d714d6a037cd948f12111ce23be9c8","453f962172aedc32eb37e395c8cdb7d9ce578b1f2f396446f685a169153e3630"]

Anchored

2026-08-31

Public log entry

search.sigstore.dev, log index 2657634507 · entry 108e9186e8c5677ab840…

Expected log hash

e92d5b270304966dfd65dc0d9d8022a5b05931f761c79f5d6dec1128a7483f8d 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":"v1788146824604","kind":"published-quote","locale":"fr","page":"product:proton/proton-mail/fr","quote":"Protonmail m'a causé bien assez de maux de tête.","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 (f0f62c56ff03…), 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.