Rolf-Erik Nystrøm
type: MusicGroup
genre: chamber music
genre: free jazz
description: Rolf-Erik Nystrøm (born 23 April 1975) is a Norwegian saxophonist and composer in the field of contemporary music. Career Nystrøm has a diploma of music from the Norwegian Academy of Music and is n
popularity: 6
followers: 378
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcfcf94fbf18342fa00a03a516048d971327591d5caff4096da080d3dbb752492
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d23be930-09ec-47a9-8188-38c4927512e2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d23be930-09ec-47a9-8188-38c4927512e2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d23be930-09ec-47a9-8188-38c4927512e2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcfcf94fbf18342fa00a03a516048d971327591d5caff4096da080d3dbb752492","name":"Rolf-Erik Nystrøm","registered_at":"2026-06-21T01:21:02Z","symbol":"NIM1775181","token_address":"0x17ec402fbff920c94b9d18c5c6dec6be832147f6","type":"artist","uuid":"d23be930-09ec-47a9-8188-38c4927512e2"}
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 0xcfcf94fbf18342fa00a03a516048d971327591d5caff4096da080d3dbb752492. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d23be930-09ec-47a9-8188-38c4927512e2.json and https://artists.proofprofile.net/proofs/artist/d23be930-09ec-47a9-8188-38c4927512e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xcfcf94fbf18342fa00a03a516048d971327591d5caff4096da080d3dbb752492","name":"Rolf-Erik Nystrøm","registered_at":"2026-06-21T01:21:02Z","symbol":"NIM1775181","token_address":"0x17ec402fbff920c94b9d18c5c6dec6be832147f6","type":"artist","uuid":"d23be930-09ec-47a9-8188-38c4927512e2"}
album: Hero - Musikken Til Dokumentaren 'Prøysen'
  type: MusicAlbum
  date published: 2004-01-01