Cardio Kazan
type: MusicGroup
genre: post-hardcore
popularity: 5
followers: 1683
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa60bdfe4facc16f022916f8eafe4e35fc270c019e5c21814206f6574abadd74b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953889
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e3163ad-38f1-462d-a823-5df7b6ec5000.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e3163ad-38f1-462d-a823-5df7b6ec5000.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0e3163ad-38f1-462d-a823-5df7b6ec5000
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:57:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa60bdfe4facc16f022916f8eafe4e35fc270c019e5c21814206f6574abadd74b","name":"Cardio Kazan","registered_at":"2026-06-15T18:33:06Z","symbol":"NIM0795384","token_address":"0x51dd196d11333946547350390db646c1945122d2","type":"artist","uuid":"0e3163ad-38f1-462d-a823-5df7b6ec5000"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60bdfe4facc16f022916f8eafe4e35fc270c019e5c21814206f6574abadd74b. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e3163ad-38f1-462d-a823-5df7b6ec5000.json and https://artists.proofprofile.net/proofs/artist/0e3163ad-38f1-462d-a823-5df7b6ec5000.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:57:45Z
  text: {"copyright_id":"0xa60bdfe4facc16f022916f8eafe4e35fc270c019e5c21814206f6574abadd74b","name":"Cardio Kazan","registered_at":"2026-06-15T18:33:06Z","symbol":"NIM0795384","token_address":"0x51dd196d11333946547350390db646c1945122d2","type":"artist","uuid":"0e3163ad-38f1-462d-a823-5df7b6ec5000"}
album: MAYBE THIS WILL START THE FIRE
  type: MusicAlbum
  date published: 2011-01-05
album: Ultraviolet Suspension
  type: MusicAlbum
  date published: 2012-02-07
album: The Baralax
  type: MusicAlbum
  date published: 2014-05-31
album: Faso (feat. Jose Salazar)
  type: MusicAlbum
  date published: 2016-10-12
album: Avia Zophia
  type: MusicAlbum
  date published: 2018-02-20
album: Masque Ellipse
  type: MusicAlbum
  date published: 2018-10-31
album: Numb
  type: MusicAlbum
  date published: 2019-08-18
album: HOLLOW
  type: MusicAlbum
  date published: 2025-08-19