Horst-Michael Schaffer
type: MusicGroup
genre: big band
popularity: 8
followers: 241
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b179c848d836bed4bcda1c5028651517df2c7bbe2d3995133c14ff55de54095
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/675f4d87-e676-4ac8-902a-6896e75559b5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/675f4d87-e676-4ac8-902a-6896e75559b5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/675f4d87-e676-4ac8-902a-6896e75559b5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b179c848d836bed4bcda1c5028651517df2c7bbe2d3995133c14ff55de54095","name":"Horst-Michael Schaffer","registered_at":"2026-06-17T01:38:29Z","symbol":"NIM1240558","token_address":"0x677b2fc7a9e6c0adfc34512185fb1b4fbb0841ec","type":"artist","uuid":"675f4d87-e676-4ac8-902a-6896e75559b5"}
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 0x6b179c848d836bed4bcda1c5028651517df2c7bbe2d3995133c14ff55de54095. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/675f4d87-e676-4ac8-902a-6896e75559b5.json and https://artists.proofprofile.net/proofs/artist/675f4d87-e676-4ac8-902a-6896e75559b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x6b179c848d836bed4bcda1c5028651517df2c7bbe2d3995133c14ff55de54095","name":"Horst-Michael Schaffer","registered_at":"2026-06-17T01:38:29Z","symbol":"NIM1240558","token_address":"0x677b2fc7a9e6c0adfc34512185fb1b4fbb0841ec","type":"artist","uuid":"675f4d87-e676-4ac8-902a-6896e75559b5"}
album: Becoming
  type: MusicAlbum
  date published: 2023-09-15
album: Superspreader
  type: MusicAlbum
  date published: 2023-10-06
album: Resistance of Humanity
  type: MusicAlbum
  date published: 2023-11-03
album: The Space Between Us
  type: MusicAlbum
  date published: 2023-12-01