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.

“Großartiges VPN mit ziemlich schnellen Servern.”
Google Play · 5/5 · 2026-08-11

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 3102753131

Proof data

Record hash (SHA-256): 06cb20810e4beb5115ca5b8afddd69640d016611f53af7e8afa7c1f132b41821
Signature (Ed25519, base64): MaLMlYQ+HED3lV3cZQaUQfJFcEvTeYz+ul+JfHRx+LzqG3hykquhmwbIsKb2wDHPgwEmZ5fLHMYMq+SFDWysAg==
Merkle root: 92de3fc6370869ec6c1d0482494ff1816d45e719fbf27ec8d8d02933c2b7c658
Merkle path: ["06cc6e79e00c38f9ddce62aab873b5d383c4acff3daf226097bbdb5dd33d7808","7fbb8e4e532ab0c22e2fd559f2ea6b4e2f202865798040b93285ff0b69822e05","48020e7db8405ef4e8569d3b87f508bf3ab46dfe2cd4c37a1fca66e8d427cbbe","45861535c1de313f240e7008266eee4a6fd6cd7984b8c69ed060201f02bb0920","14400ec0eb6238bc593b0e2f0e1d734758459d5c8d967be97f876b20d10705a0","ed0758f91c7c116f10805dbdcf94f46af02bee6de5f6ecd1a1d403b7ab18e9df","70c4f34684a710cb79bee4fadcd8faf1376923569b1c259b17f9c8d9aa865397","f60dcca2fa9ebe290663e167287442b30ab7e9f66d4756fad02fb1f9efa91796","a0c7fb5cab0d357bc3ba3d33f7d3fef5ca856c0c3cd3f75683602e5bd51ede95","cfa5835e86a699a8a009c140ccaac2d4bd5e746df8e0bffe3a957e27c0b7ce89","467caf38c60dbe9af82bf4fa2868f551727fcb3b5e4e3f596cd32860835fb208","a2cd65cf0319b43e2520c11c2ee319239973e721415ac164d62505989335e76b","4825c613bbb234042f9b1f0a747dcbc90d2d07cbe7a958530b305e1113d9b617","4e60c8870052117ad280950bee2be0f8a355cdc9c18fd48de6f1a997eb38ac39","a501be5c1ab88f300525e7c01289a28bce17334eb0d8acf270b9e649519761c4"]
Anchored: 2026-10-06
Public log entry: search.sigstore.dev, log index 3102753131 · entry 108e9186e8c5677a9761…
Expected log hash: 5cca28352ab3a467a358005e8b17999e96a5be0f2e71c2152bf575d4cd8c238a 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":"v1791264491480","kind":"published-quote","locale":"de","page":"product:proton/proton-vpn/de","quote":"Großartiges VPN mit ziemlich schnellen Servern.","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.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 (92de3fc63708…), 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.