Broers + Klazinga
type: MusicGroup
genre: progressive rock
popularity: 8
followers: 208
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d2f53d7d374a7f0bd99e86d473c7c5c4f4c33240b2bc8efa58d909225a64f10
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4968cfd-1665-494c-9312-89e75dc58911.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4968cfd-1665-494c-9312-89e75dc58911.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d4968cfd-1665-494c-9312-89e75dc58911
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d2f53d7d374a7f0bd99e86d473c7c5c4f4c33240b2bc8efa58d909225a64f10","name":"Broers + Klazinga","registered_at":"2026-06-21T02:35:46Z","symbol":"NIM1793173","token_address":"0x387cc21992adb52a341856f4a4e857835a7b754c","type":"artist","uuid":"d4968cfd-1665-494c-9312-89e75dc58911"}
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 0x0d2f53d7d374a7f0bd99e86d473c7c5c4f4c33240b2bc8efa58d909225a64f10. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4968cfd-1665-494c-9312-89e75dc58911.json and https://artists.proofprofile.net/proofs/artist/d4968cfd-1665-494c-9312-89e75dc58911.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0d2f53d7d374a7f0bd99e86d473c7c5c4f4c33240b2bc8efa58d909225a64f10","name":"Broers + Klazinga","registered_at":"2026-06-21T02:35:46Z","symbol":"NIM1793173","token_address":"0x387cc21992adb52a341856f4a4e857835a7b754c","type":"artist","uuid":"d4968cfd-1665-494c-9312-89e75dc58911"}
album: Burdens of the Mind
  type: MusicAlbum
  date published: 2021-03-26
album: Second Thoughts
  type: MusicAlbum
  date published: 2024-12-20