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.

“Ausgezeichneter, sicherer E-Mail-Dienst.”
Google Play · 5/5 · 2026-08-04

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 2657817117

Proof data

Record hash (SHA-256): 0c8a11f08245dfd59b0b212e80d438d37d3a50a14864c40ba0cbb4183b7f0810
Signature (Ed25519, base64): 4KVlYUh9GBxyH84YoHdJPT2+LszdrRjoovH8Y5QDPKoao5qFnsUDuG43hp1Azotbkukyvn0/WnX2oeuziuXsCQ==
Merkle root: 7c31845ea005068c52611e47ff2778bff3790bf9c71538767447b45fe79322da
Merkle path: ["0c8aa1746d106f9fd80c269a81c176bc4006b4bb4e8e6b835be71b7749b592bf","c685644b51eed2ffbdc939db399fad7d40b08e3df22fe2866e07273a71315c4b","9d8a936fcde0034286319b30aad0c650e050a13e828ad717f85b945921dc420d","486e9ee67ee9c3394dea174bd63839ab74137c75ad5fa481868c84cd54818ce7","35a8cc1df7fe57bb8128b119cd007a8a5d4b8392e8c5b64fafe89113d6f88fc8","468357a587d66d983c785b745a4b8c85ff059e09636907ed081590f42c8ca70c","22706b15837cb21948357d83d5c61feb8e2aec4dac8df4354ad19e5fc9683b40","2f4cc7fdcb3f7043f409a70c2e2444315fe67bc31a4ebf6c8f833c5eda89e030","3d7aba4b1b7e67a6be8763c16eb74d438a6e647deb20c9838484e32018175037","60640b3e6623ed57a5ab044a1a7833b6de4727615c887a4e92ec4df7e1f9de92","4f9bf5afaa65f61da2f5794dd0ddec8019e03ac31d1a2f9249cdc4d69925b914","6ceae28d9d9991c7f0978d9583675f513d5a8b980f19419645347989922bda23","de406c010b9d09d7f74176c9d423f8d72b745ac400e2c0cfcdb434d0af8fcade","e49018058753e3439518d8ba4c827c0b343729e39fb424281e6808f61fcc629a","4f862010adf0fcb97b6b2b8112f782a485805bae9f9783a7b39739616b9b62e0"]
Anchored: 2026-08-31
Public log entry: search.sigstore.dev, log index 2657817117 · entry 108e9186e8c5677ad3ca…
Expected log hash: 0666b5f97f085fdfc4cedfba58ac7e76857cdc9faa5a1032ef597cdb93024c5a 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":"v1788148095319","kind":"published-quote","locale":"de","page":"theme:proton/communication/de","quote":"Ausgezeichneter, sicherer E-Mail-Dienst.","rating":5,"review_date":"2026-08-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (7c31845ea005…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.