BJ Baartmans
type: MusicGroup
genre: nederpop
popularity: 6
followers: 301
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d3602bc540edaf8bc8d16b288aee52a2831bd0ee143abdc71344e2a514160f7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12a024c5-67d7-4935-9045-c7335176d096.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12a024c5-67d7-4935-9045-c7335176d096.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12a024c5-67d7-4935-9045-c7335176d096
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d3602bc540edaf8bc8d16b288aee52a2831bd0ee143abdc71344e2a514160f7","name":"BJ Baartmans","registered_at":"2026-06-15T20:05:54Z","symbol":"NIM0817518","token_address":"0x86239d1bd33720461ea864e1b92b5d4e7054602d","type":"artist","uuid":"12a024c5-67d7-4935-9045-c7335176d096"}
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 0x9d3602bc540edaf8bc8d16b288aee52a2831bd0ee143abdc71344e2a514160f7. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12a024c5-67d7-4935-9045-c7335176d096.json and https://artists.proofprofile.net/proofs/artist/12a024c5-67d7-4935-9045-c7335176d096.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x9d3602bc540edaf8bc8d16b288aee52a2831bd0ee143abdc71344e2a514160f7","name":"BJ Baartmans","registered_at":"2026-06-15T20:05:54Z","symbol":"NIM0817518","token_address":"0x86239d1bd33720461ea864e1b92b5d4e7054602d","type":"artist","uuid":"12a024c5-67d7-4935-9045-c7335176d096"}
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