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.

“Ich wurde auf den Premium-Plan umgestellt, obwohl ich das zu keinem Zeitpunkt angefordert habe.”
Google Play · 1/5 · 2026-07-15

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 3081733041

Proof data

Record hash (SHA-256): d4605618459abcbe6cce9977a26f8480eee5a30e25db7027dc5d479d169d425c
Signature (Ed25519, base64): RdPT+dA/YUMh2/GRqJjui04srwLgRqLESPEaesut2iPm+OPGPsB7xNzudAr8GX8xwartmDUf5Tya6vbuWP9dCQ==
Merkle root: c5671f9a997da9b293a79ebe58b20e4534ae608121169f15a5adc358d42ed147
Merkle path: ["d4611b2a6939a74a4c42b946e3595633c8803a5fa72b6f642cae97d4ecf9feca","7c84da1f73c2e870cd7ee4335d3659f5d617d0b5593b7ab188d55fe37436223d","84e0ee589ba165c015e5f1739f686423e61e72bb35366934f27c48a41a33b0e3","69bccc49e0d1403c7a226310dfc28bb0ef066ee03c2ba9983df17e62c9d87164","8e78d7a686deedbcbead676d3f5ffd60bfbf8f057eb9329cf70347febfc0e457","7bb6a187d6f96035fc380e2fdca91373546ea3bd2ff457dc980fd67337fbbddb","f9582c7839c7a60f98c64124e4a9c744c15ae64f53b72a2477e99d376d77b52a","8e812cd87f06ec7395bb0da0046b9b5c22e8b7ec51e81a5e5417ff189ab127db","36fc8dd96ef117619ace752008de00e5073d040e4bd7ea83266fd0404e166cc8","cbde7c1d00a8467c9c95e39a83cb4cfa4b11499aa4a4d8078a4dd1cd48e66d0b","9a892d98a11956453c1064092d5c6b1d36dff3ab25eb28dd62af2ef8de530a31","c2314685d282260e82efc0b07eeb8950747dd78d6bad75ae779e6e344b939093","559cae92197535de6e9ab7f059d7a4982421950ead7a8f5e4d04b1f493eca7e0","88cd1d282a2bb77a79f9d9f8989b16c950f9c17a06b01f4b6224af3ee50b80ca","b178a1b83338c84f1a44bf8fe330ca4b62fad9df75daa4f4e38c0d04e336f831"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3081733041 · entry 108e9186e8c5677a0bbb…
Expected log hash: 88ab7ac46d4614551fa6e665889f054d7592b15d91016a45621b5c46a7ae8e2f 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":"v1791174108170","kind":"published-quote","locale":"de","page":"theme:vaia/billing/de","quote":"Ich wurde auf den Premium-Plan umgestellt, obwohl ich das zu keinem Zeitpunkt angefordert habe.","rating":1,"review_date":"2026-07-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (c5671f9a997d…), 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.