Roland Kayn
type: MusicGroup
genre: avant-garde
genre: experimental
description: Roland Kayn (born 3 September 1933 in Reutlingen, Germany; died 5 January 2011 in Nieuwe Pekela, Netherlands) was a composer of electronic music. He is known for his lengthy works of cybernetic music
popularity: 2
followers: 857
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6a52bfdf1eefd99049f36ee8d018fcecdd81f2b3ab67433b2307d0f736ce67b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5282db9d-606b-4587-8e59-b15f9b80f9a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5282db9d-606b-4587-8e59-b15f9b80f9a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5282db9d-606b-4587-8e59-b15f9b80f9a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6a52bfdf1eefd99049f36ee8d018fcecdd81f2b3ab67433b2307d0f736ce67b","name":"Roland Kayn","registered_at":"2026-06-16T18:17:03Z","symbol":"NIM1135236","token_address":"0xf55e121675c87c907f28ad0ca988d5cd8963c24e","type":"artist","uuid":"5282db9d-606b-4587-8e59-b15f9b80f9a4"}
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 0xc6a52bfdf1eefd99049f36ee8d018fcecdd81f2b3ab67433b2307d0f736ce67b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5282db9d-606b-4587-8e59-b15f9b80f9a4.json and https://artists.proofprofile.net/proofs/artist/5282db9d-606b-4587-8e59-b15f9b80f9a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc6a52bfdf1eefd99049f36ee8d018fcecdd81f2b3ab67433b2307d0f736ce67b","name":"Roland Kayn","registered_at":"2026-06-16T18:17:03Z","symbol":"NIM1135236","token_address":"0xf55e121675c87c907f28ad0ca988d5cd8963c24e","type":"artist","uuid":"5282db9d-606b-4587-8e59-b15f9b80f9a4"}
album: Kayn: Cybernetics III / Nono: Contrappunto Dialettico Alla Mente
  type: MusicAlbum
  date published: 1970
album: Simultan
  type: MusicAlbum
  date published: 2024-10-16