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.

“Hervorragende Klangqualität!”
Google Play · 5/5 · 2026-09-17

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 2913636507

Proof data

Record hash (SHA-256): db95f434cf820d02f400914de33e2ba98b705920a27b511822c4d9805260be60
Signature (Ed25519, base64): IhZyLrF+AJmqFK4Tht5AzOs0tF40sODgRKooKNeDwFzRBuzi7Eu4Kkpdvku11pDLJqCcYgGyTV7TDALj1FxGBA==
Merkle root: f26292e960b34f73f9768b4afc64585e265549d794b35b8167826c2bcda92ef5
Merkle path: ["db981bf5ec4710956640ba58ae43204a0a5e0279d5296f59fc4244641cdfadd2","fe9f0fcc7519c99aee064b5d467108a91eb283603d77c92441bd6574aa4ac587","983802f8033dbec89b864d331e6a15f8a9bc02a8e7a4a4139f85908aa6de6985","e33bf34dc2bb4b829653a769229953f15c51e7531f1769f935ce091e5d25ff1d","5d8e3377f1d18cbb057b33ff2e468a0b006e400e953f3dd7d157aeb23a1832cc","764358bb5048c17f46ce4e2f45f76ea5261b15e3853e8c16d7ee63bbc3b084cc","d46bd40935443698196870763f2a669148cacd78d4756f6ed338fd5b96cb78d1","f87747c4c1bdf474b24b5a17e2e9cdfea64db306d8abe69fee35c7bd694d45bd","3cf99f790e7a73c45bc12796770b5b60cd580eccea2ed03698dabd43f03cb537","a70e1d2f9ccffd8b729b52d378b6ed2103af85893ef32dec9842453e7f2c1aff","5a957482a39ac8356dc26bb21111830411eab29bbbb9a8dd03479b67627dbe15","88c1267a6d70047cee180b9815247bc1da5a16a96b57f3fe20a9c2533caa110d","44c8cb0eec3d4c66924c6271a9a32942cc950a307a9339cedf9246ffe3125d65","b763ea1ef84637e764decc45acddfba68cbd65e2d958f57cfeabc8af53520b04","a616224c7837fee9e37cf9dfa53b6dc52945555438d928215ead84ba8ccc7b57"]
Anchored: 2026-09-23
Public log entry: search.sigstore.dev, log index 2913636507 · entry 108e9186e8c5677aea51…
Expected log hash: 417fac9b806377ff48d30ded01faf8424eb98406df713fe2564ee9077747e6a6 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":"v1790070376053","kind":"published-quote","locale":"de","page":"subtheme:deezer/quality/streaming-performance/de","quote":"Hervorragende Klangqualität!","rating":5,"review_date":"2026-09-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=deezer.android.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 (f26292e960b3…), 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.