Het Orca Orkest
type: MusicGroup
popularity: 3
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea9e5bd6b14a86a549da2ecd7f547c6357fcbb583e818513fc055f6c2b7363f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/943660b8-e798-44e5-854b-5baa5ece0460.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/943660b8-e798-44e5-854b-5baa5ece0460.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/943660b8-e798-44e5-854b-5baa5ece0460
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xea9e5bd6b14a86a549da2ecd7f547c6357fcbb583e818513fc055f6c2b7363f8","name":"Het Orca Orkest","registered_at":"2026-06-17T17:22:48Z","symbol":"NIM1465756","token_address":"0x93352c85e80038c81b8a309db3541a1c3d470048","type":"artist","uuid":"943660b8-e798-44e5-854b-5baa5ece0460"}
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 0xea9e5bd6b14a86a549da2ecd7f547c6357fcbb583e818513fc055f6c2b7363f8. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/943660b8-e798-44e5-854b-5baa5ece0460.json and https://artists.proofprofile.net/proofs/artist/943660b8-e798-44e5-854b-5baa5ece0460.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xea9e5bd6b14a86a549da2ecd7f547c6357fcbb583e818513fc055f6c2b7363f8","name":"Het Orca Orkest","registered_at":"2026-06-17T17:22:48Z","symbol":"NIM1465756","token_address":"0x93352c85e80038c81b8a309db3541a1c3d470048","type":"artist","uuid":"943660b8-e798-44e5-854b-5baa5ece0460"}
album: Muziek voor iedereen 8
  type: MusicAlbum
  date published: 2015-07-20
album: Muziek voor iedereen 7
  type: MusicAlbum
  date published: 2015-07-20