Stig Nordhagen
type: MusicGroup
genre: chamber music
popularity: 3
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x006f61a77ce79f2183836afe57d62b2fbabd68726254f08660427d35643af419
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/15fa7516-6b66-4126-add4-3fc0ba2a331e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/15fa7516-6b66-4126-add4-3fc0ba2a331e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/15fa7516-6b66-4126-add4-3fc0ba2a331e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x006f61a77ce79f2183836afe57d62b2fbabd68726254f08660427d35643af419","name":"Stig Nordhagen","registered_at":"2026-06-15T21:26:20Z","symbol":"NIM0836698","token_address":"0x9b21eb70ab3795b25ea37b93c0825f02838b650b","type":"artist","uuid":"15fa7516-6b66-4126-add4-3fc0ba2a331e"}
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 0x006f61a77ce79f2183836afe57d62b2fbabd68726254f08660427d35643af419. 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/15fa7516-6b66-4126-add4-3fc0ba2a331e.json and https://artists.proofprofile.net/proofs/artist/15fa7516-6b66-4126-add4-3fc0ba2a331e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x006f61a77ce79f2183836afe57d62b2fbabd68726254f08660427d35643af419","name":"Stig Nordhagen","registered_at":"2026-06-15T21:26:20Z","symbol":"NIM0836698","token_address":"0x9b21eb70ab3795b25ea37b93c0825f02838b650b","type":"artist","uuid":"15fa7516-6b66-4126-add4-3fc0ba2a331e"}
album: Musikk for Eufonium - Version for Euphonium, Piano and Percussion, Pt. 2
  type: MusicAlbum
  date published: 2024-03-15
album: Nordhagen: Baut - Musikk for eufonium
  type: MusicAlbum
  date published: 2024-04-19