King Cardiac
type: MusicGroup
genre: folk rock
popularity: 2
followers: 448
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf79b93f49570844ff00dd4e3c6f2c4f530c0a6fb61316a0c7b84cdc93a3e5a41
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6246952-0cd1-4282-af7a-0e46f86af4c6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6246952-0cd1-4282-af7a-0e46f86af4c6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a6246952-0cd1-4282-af7a-0e46f86af4c6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf79b93f49570844ff00dd4e3c6f2c4f530c0a6fb61316a0c7b84cdc93a3e5a41","name":"King Cardiac","registered_at":"2026-06-20T07:16:40Z","symbol":"NIM1554774","token_address":"0xa66eeb7620faae551e5c84f34442ab503bd76484","type":"artist","uuid":"a6246952-0cd1-4282-af7a-0e46f86af4c6"}
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 0xf79b93f49570844ff00dd4e3c6f2c4f530c0a6fb61316a0c7b84cdc93a3e5a41. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6246952-0cd1-4282-af7a-0e46f86af4c6.json and https://artists.proofprofile.net/proofs/artist/a6246952-0cd1-4282-af7a-0e46f86af4c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xf79b93f49570844ff00dd4e3c6f2c4f530c0a6fb61316a0c7b84cdc93a3e5a41","name":"King Cardiac","registered_at":"2026-06-20T07:16:40Z","symbol":"NIM1554774","token_address":"0xa66eeb7620faae551e5c84f34442ab503bd76484","type":"artist","uuid":"a6246952-0cd1-4282-af7a-0e46f86af4c6"}
album: Red Blues
  type: MusicAlbum
  date published: 2017-05-26
album: When It Burns to the Ground
  type: MusicAlbum
  date published: 2020-11-24
album: Amsterdam
  type: MusicAlbum
  date published: 2021-01-22
album: Midnight Cigarette
  type: MusicAlbum
  date published: 2022-03-04
album: Bloodlines
  type: MusicAlbum
  date published: 2022-06-10