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.

“Erst ein Lied, dann vier neue Werbungen.”

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 3199014646

Proof data

Record hash (SHA-256)

35fa46b8e72480363be1256316157bbfe0d819cfd8a6b233057f18972debb190

Signature (Ed25519, base64)

FrBVtKn1IvwrKIsd47XKzHIby7RQr7J1PeNCtIxfuH5mSCPtY/FsUw/zQWE80/PVAOKawPHjQvEwc82S2I6MAA==

Merkle root

79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6

Merkle path

["35f7bc1ca71039f77d8dd46eabdee1bd5f23470f554f9ef068dbd018aa6bb1d5","51a7c74b95a6b3f0d796c0fb2033ef57709d03dbf06494c049be2634e37f2d69","f6224e1e63cd54c51696f45e589f9b02ec8a203be20f35cdf5c1b0aa0898c618","87323dd83c9e1e20584360f9b23e7a4769a9ce402a170c1b221eea0ca673074a","164433f5da62250bfe1e881357ca57372cfde48632f9bdeec02f87c1c83b035e","988a14cda4997c0c25605d48d166ab6570502554bd0bb24cb959ca222d6c5f0a","e1d33a87dd11267bec26c977b3ebee2d75e44a988ae7895125822eea5ca8df94","93c2d5e70f766f931ca697752e706a64f94607a9c3ea1e8844ab6e56844092db","72302ad3a5535434d4b0773f557a5cfff103a21f6df5403cb2bc2e67baf12f73","cdfbcef4975961f78a55221aac6a64ddd84bdab30176a71ab6c65379df34bd54","a4d1ff2d819aaa70e4a72904f49d47077caf98f4a7e3424ae6a24222996c3c7c","74ec616be75d7ddfa42f796ae5ee64734ee2aef3c18f854d94e8278d3c2de665","ca0926b42bcdad354c17320adc5661c1a0407072f1d5c01424cc2e7f9a3515fd","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…

Expected log hash

55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Erst ein Lied, dann vier neue Werbungen.","rating":1,"review_date":"2026-09-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (79268b3be1e9…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.