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.

“Soll etwa bei jedem neuen Gerät neu registriert und bezahlt werden?”
Google Play · 1/5 · 2026-07-19

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 2543154575

Proof data

Record hash (SHA-256): 8b10145537a2a4067daa98762448435987baa1647f9222b415d808aa8a6537bf
Signature (Ed25519, base64): ZsWi6DM/On0WyT7I5PNAWyS4BVh5eozMjVdS2sy6XGxqsF/YtS9PnUEL/29ynf9RAbXLmDIyV8FCecgUKk/YCQ==
Merkle root: 9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e
Merkle path: ["8b0f8955b7b6fb148a9c48c400b305e0d1df430cf4e9fd6feb83d8a9ac6112a1","d4f1cbbdc05a7bd328eb970c0ea953c23c4534e638bd139ba4c87541e0e706d0","6940dea76f3bd7439a11576f6396d5352815d8d12ce67ccfb930fbfe80f7371e","06444387b102cd35854fd359242c57c1dd105f59064db651fe5895a9cbcdb10d","a33d3aeeae2b813bf6a7a954d5128fc76709b9765346bef2491f486acbece9ae","7b8fc4e67fa100adfcd7730163f8a5e500c1455227514f938485b4f3ae03856d","2c43dd7e7fd22dbe93dfbfa3bb46eb92a5742d0bb6dd22574aade7f6c7578c60","e85f7b1b452605d52d159120add08b7efadbb14812d2bf8c62c67520302626d8","106a45dda2a0ed1b3276c564b137cb71d39eb937b6cc3665323f7df9f1e209ee","cd70be87f33eb857c216e426540874b6316450fe553cc18b972f9803c768482f","704f1ef7bd29f72a9ed1e253f15bc1d5b1234fc85d43204821dadc767080a235","346cea62be3b419a38010a24eb74deeeddaa59924509f7cf63f3210f918348bc","969114be98209aceeb13470003a6154b1294d7c8dc772e07d6980600f808e932","bb86c0787e05591c350bbf95c58c2d99f0ba679999db51dee6e8bbec88a42a61","deb69ba818cac6d60ad262ee5febe93ecfd14e4c978778af299f82ef8a69b934"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543154575 · entry 108e9186e8c5677a0eab…
Expected log hash: 0099eed9d12aa99aaa44ed875b87ffaf90c46527b61dfd92cdd4db2c148aef65 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":"v1787284115102","kind":"published-quote","locale":"de","page":"theme:threema/billing/de","quote":"Soll etwa bei jedem neuen Gerät neu registriert und bezahlt werden?","rating":1,"review_date":"2026-07-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (9ca8f1c1ad15…), 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.