Kinderkoor Jacob Hamel
type: MusicGroup
genre: children's music
popularity: 3
followers: 76
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7303baa64adb75ecc94934f4cd431190cf0791f1c4a0e998b85951e806624c8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88e22b45-7a95-4c81-a408-1fa22d9987e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88e22b45-7a95-4c81-a408-1fa22d9987e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/88e22b45-7a95-4c81-a408-1fa22d9987e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd7303baa64adb75ecc94934f4cd431190cf0791f1c4a0e998b85951e806624c8","name":"Kinderkoor Jacob Hamel","registered_at":"2026-06-17T13:22:20Z","symbol":"NIM1408354","token_address":"0x2419530529b4f72d05cdfc29bdb97d94f35251dd","type":"artist","uuid":"88e22b45-7a95-4c81-a408-1fa22d9987e8"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7303baa64adb75ecc94934f4cd431190cf0791f1c4a0e998b85951e806624c8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88e22b45-7a95-4c81-a408-1fa22d9987e8.json and https://artists.proofprofile.net/proofs/artist/88e22b45-7a95-4c81-a408-1fa22d9987e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xd7303baa64adb75ecc94934f4cd431190cf0791f1c4a0e998b85951e806624c8","name":"Kinderkoor Jacob Hamel","registered_at":"2026-06-17T13:22:20Z","symbol":"NIM1408354","token_address":"0x2419530529b4f72d05cdfc29bdb97d94f35251dd","type":"artist","uuid":"88e22b45-7a95-4c81-a408-1fa22d9987e8"}
album: Kijkkast Kinderliedjes
  type: MusicAlbum
  date published: 1969
album: ´k Heb Mijn Wagen Volgeladen
  type: MusicAlbum
  date published: 1970
album: De Leukste Liedjes Uit Oebele
  type: MusicAlbum
  date published: 1971
album: Muzikale Pepernoten
  type: MusicAlbum
  date published: 1973-11-08
album: De Leukste Kinderliedjes van Toen
  type: MusicAlbum
  date published: 2022-04-29