Harro Ruijsenaars
type: MusicGroup
genre: chamber music
popularity: 3
followers: 326
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e06fc9a092732d9b14b203b3d511ce881c36c1a1c4099b820d0664ab32ff3bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4d2ee08-5303-4e58-a16a-315f8b659cba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4d2ee08-5303-4e58-a16a-315f8b659cba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c4d2ee08-5303-4e58-a16a-315f8b659cba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e06fc9a092732d9b14b203b3d511ce881c36c1a1c4099b820d0664ab32ff3bc","name":"Harro Ruijsenaars","registered_at":"2026-06-20T20:32:11Z","symbol":"NIM1708015","token_address":"0xd71ecb50402db51ff236b85ca0d8e0743455b07a","type":"artist","uuid":"c4d2ee08-5303-4e58-a16a-315f8b659cba"}
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 0x3e06fc9a092732d9b14b203b3d511ce881c36c1a1c4099b820d0664ab32ff3bc. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4d2ee08-5303-4e58-a16a-315f8b659cba.json and https://artists.proofprofile.net/proofs/artist/c4d2ee08-5303-4e58-a16a-315f8b659cba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0x3e06fc9a092732d9b14b203b3d511ce881c36c1a1c4099b820d0664ab32ff3bc","name":"Harro Ruijsenaars","registered_at":"2026-06-20T20:32:11Z","symbol":"NIM1708015","token_address":"0xd71ecb50402db51ff236b85ca0d8e0743455b07a","type":"artist","uuid":"c4d2ee08-5303-4e58-a16a-315f8b659cba"}
album: Reger: 3 Suites for Cello Solo
  type: MusicAlbum
  date published: 2010-03-01
album: Moods for Cello and Piano
  type: MusicAlbum
  date published: 2010-10-01
album: Moods for Cello and Piano
  type: MusicAlbum
  date published: 2010-10-01
album: Mozart, Schubert & Schumann
  type: MusicAlbum
  date published: 2013-02-01
album: Mozart, Schubert & Schumann: Works
  type: MusicAlbum
  date published: 2013-02-01
album: Harro Ruijsenaars & Paul Komen
  type: MusicAlbum
  date published: 2013-04-30
album: Bach Excursion
  type: MusicAlbum
  date published: 2017-11-18