Louis Andriessen
type: MusicGroup
genre: avant-garde
genre: minimalism
genre: opera
description: Louis Joseph Andriessen (; 6 June 1939 – 1 July 2021) was a Dutch composer, pianist and academic teacher. Considered the most influential Dutch composer of his generation, he was a central proponent o
popularity: 15
followers: 7125
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3dfbdea2e4bd39d0a364555d51b79445ccfedd4caff5fbcff03fb48be978518d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed0ce524-4705-450f-857f-63159e0cfc6e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed0ce524-4705-450f-857f-63159e0cfc6e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed0ce524-4705-450f-857f-63159e0cfc6e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3dfbdea2e4bd39d0a364555d51b79445ccfedd4caff5fbcff03fb48be978518d","name":"Louis Andriessen","registered_at":"2026-06-15T05:26:29Z","symbol":"NIM0695962","token_address":"0xc4c8804f1045ddf7bc2b9cedbcb42c6780cf9c2b","type":"artist","uuid":"ed0ce524-4705-450f-857f-63159e0cfc6e"}
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 0x3dfbdea2e4bd39d0a364555d51b79445ccfedd4caff5fbcff03fb48be978518d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed0ce524-4705-450f-857f-63159e0cfc6e.json and https://artists.proofprofile.net/proofs/artist/ed0ce524-4705-450f-857f-63159e0cfc6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0x3dfbdea2e4bd39d0a364555d51b79445ccfedd4caff5fbcff03fb48be978518d","name":"Louis Andriessen","registered_at":"2026-06-15T05:26:29Z","symbol":"NIM0695962","token_address":"0xc4c8804f1045ddf7bc2b9cedbcb42c6780cf9c2b","type":"artist","uuid":"ed0ce524-4705-450f-857f-63159e0cfc6e"}
album: Anaïs Nin | De Staat
  type: MusicAlbum
  date published: 2011-09-09