Helle Brunvoll
type: MusicGroup
genre: vocal jazz
popularity: 2
followers: 258
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04a814be4c0de86c621632794b2daf5fa4263eaa90b2225abd9483584541f6c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9887526-b975-49c3-b7ac-838d76c8b6cd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9887526-b975-49c3-b7ac-838d76c8b6cd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a9887526-b975-49c3-b7ac-838d76c8b6cd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04a814be4c0de86c621632794b2daf5fa4263eaa90b2225abd9483584541f6c2","name":"Helle Brunvoll","registered_at":"2026-06-20T09:16:32Z","symbol":"NIM1576331","token_address":"0x51af9145577f37e11148b2fa78126d4ab4fef29f","type":"artist","uuid":"a9887526-b975-49c3-b7ac-838d76c8b6cd"}
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 0x04a814be4c0de86c621632794b2daf5fa4263eaa90b2225abd9483584541f6c2. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9887526-b975-49c3-b7ac-838d76c8b6cd.json and https://artists.proofprofile.net/proofs/artist/a9887526-b975-49c3-b7ac-838d76c8b6cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x04a814be4c0de86c621632794b2daf5fa4263eaa90b2225abd9483584541f6c2","name":"Helle Brunvoll","registered_at":"2026-06-20T09:16:32Z","symbol":"NIM1576331","token_address":"0x51af9145577f37e11148b2fa78126d4ab4fef29f","type":"artist","uuid":"a9887526-b975-49c3-b7ac-838d76c8b6cd"}
album: Helle Brunvoll & Halvard Kausland
  type: MusicAlbum
  date published: 2006-03-01
album: Helle Brunvoll & Halvard Kausland
  type: MusicAlbum
  date published: 2006-03-01
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