Hans Josefsson
type: MusicGroup
popularity: 13
followers: 147
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x89027ad4b0807fed09567fc67dc3a296f0bbfd8b5565a919b9e5fd90ce012cfb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8978a0e-edb7-4621-9fa1-a4890adc40b1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8978a0e-edb7-4621-9fa1-a4890adc40b1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b8978a0e-edb7-4621-9fa1-a4890adc40b1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x89027ad4b0807fed09567fc67dc3a296f0bbfd8b5565a919b9e5fd90ce012cfb","name":"Hans Josefsson","registered_at":"2026-06-14T23:58:14Z","symbol":"NIM0617554","token_address":"0x869905bab0ac5fb7c4eb54923e1f4796768008f0","type":"artist","uuid":"b8978a0e-edb7-4621-9fa1-a4890adc40b1"}
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 0x89027ad4b0807fed09567fc67dc3a296f0bbfd8b5565a919b9e5fd90ce012cfb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8978a0e-edb7-4621-9fa1-a4890adc40b1.json and https://artists.proofprofile.net/proofs/artist/b8978a0e-edb7-4621-9fa1-a4890adc40b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x89027ad4b0807fed09567fc67dc3a296f0bbfd8b5565a919b9e5fd90ce012cfb","name":"Hans Josefsson","registered_at":"2026-06-14T23:58:14Z","symbol":"NIM0617554","token_address":"0x869905bab0ac5fb7c4eb54923e1f4796768008f0","type":"artist","uuid":"b8978a0e-edb7-4621-9fa1-a4890adc40b1"}
album: Ernst Rolf Lykkeland
  type: MusicAlbum
  date published: 2000-01-01
album: That's Entertainment!
  type: MusicAlbum
  date published: 2010-07-18