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.

“Habe das Probeabo gekündigt und mir wurden trotzdem die vollen 77 Pfund berechnet”
Google Play · 1/5 · 2026-02-12

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 2907673729

Proof data

Record hash (SHA-256): 6f113e6d569b9ab0eb5cd25c67c114a88dec7351306d78db0c95611324e6b8b2
Signature (Ed25519, base64): KHotBoQlBTu3NILRyvN2Eg/R/L0kwl9kvkIHzAdsK4DtJKhEpawjeaL0E8sAuJenf2YHAjRLaTks48yorFtmCA==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["6f16b3c46af913527042a5feae3f8be39b14c039a59de1d3a74e9b98cafc9920","9d1a59e9f40b6a5c4e53a21c7c71bfb1c7a07ac337f1bb87842561a725ae0dec","4fe0e447e8426d4587e091cc01ebcb68e4661cda8da679720189460e88b2eb5a","82f4800288e268b759ace4a93da466c664fe0a66d44ba44e159836bff76378e2","16ecc6b8be85836c2adc6ed772a9f89e666bc476010e4a2bef1179d6d53a49f9","9583ff7c1b1f50392cd96195f8c3cad43cea9f0c2a2bef0feb5f293930ec046d","68f4d7ed74c1ce33b9ad06eb37e36a9eb9c29a33ef4db834eee614c0c8f61455","6a3c34891bfbc519fd3ad03e02ff4c4428fb44278adb6d6fc4d6d720b37924b6","4823e581ec530bc730f83fbc1948180c59159cc87bbe6c0b23ee874889ec3297","6f1f113bf589be73619a3d47944b58f51691f155ed302b17ee4c67851c0133ab","16e76181c9e0c3e4486f4b7a6922be8a933d0a9c0c664aeebbf3709042661f8a","f8cfc666649943796cc64798f4b6be7235ebee26ef544e99b42bab2155b6cbad","8b252735b283ab7584d9f6925f08ed38c911c64db001463eafabe5061cb6f9fe","6c299608515c69a03540be35865f96ca4932f3e0403f8f39fb0e1c2e2aedffb4","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/billing/de","quote":"Habe das Probeabo gekündigt und mir wurden trotzdem die vollen 77 Pfund berechnet","rating":1,"review_date":"2026-02-12","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 (b9a08f9d6d76…), 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.