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.

“kündigung nicht in der app möglich”
Google Play · 1/5 · 2026-09-19

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 3258859570

Proof data

Record hash (SHA-256): 21e8fabece19bd8336f5410a632db59b6a9faf9e46a5b37b683bf057b6020540
Signature (Ed25519, base64): YfiKsrMWhOF9uxbi4SwsfiChBftwi30MLJQCiK2bm4ROCE2wRry9gBbV5XVf3xy7lv/RcRAerftYRbAcbmwTDg==
Merkle root: ca3049e83faa90e23a8ee728d82960c74b9da8080000e4c92979853b767b75e4
Merkle path: ["21e02ff155d8ca5de3345d60915c7b5bb935355a8428cdafa3722f6b6b0570ed","920bcf46993ad722e28e3fb37b803d40e1deaa277a54f827a474aef1715b6f01","d8acbc863a12e64648baf5e9ab53a480d4d21b5ddeb03a39f899518dfe50bf2d","b5d907c5e0f4cdef8369b62caa05184d48f804b91ed473d9f9facfbfd12b35c2","874cea222b8983ee819c708271ac9f86acccdd2a186faf0d1c6cdd17495a969c","8b6c364bd14c211fcf1fe51fb227f673ddb5d16b4451f558f69afbd80d6765d9","b0209b8ca70f70fdc00c2fd5b022e614f6454f6744ccd69b9eff74c2b097b18e","42084336ea68671c6cdbc64a3256814ce9f7294da996c963b95e1c82cb6410bc","967fb081a396cfbb66bed783bb3ed6fcaf7ac69b9eb2aaa3de2e97982eb61e11","07e33df340bf65f90d7d54b0f16925fa2c94e200ad431c64d867123d98a36a84","3c861171afc1234c13d38e0a9581ac6cb6efc1343332ad0b81835f9345442915","c528a565399f1c43ffb0fc3019a2c2cee2d7413a87787555bb34d4d613541976","3eed51977edad6c2579b7e509587049321fa77487298d3b73535214036c0118d","7614ef067de1e21e5c4ed10ec802ff07f79b9dfb75186edc1d9abf343905b9c9"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258859570 · entry 108e9186e8c5677a8fb5…
Expected log hash: 37382a24206a9b79ef105a983cf477ccafc4b4430b1549876c44fbf5fedaafa5 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":"v1792034893828","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"kündigung nicht in der app möglich","rating":1,"review_date":"2026-09-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","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 (ca3049e83faa…), 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.