Nikolaus Harnoncourt
type: MusicGroup
description: Johann Nikolaus Harnoncourt (6 December 1929 – 5 March 2016) was an Austrian conductor, known for his historically informed performances. He specialized in music of the Baroque period, but later exten
popularity: 5
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16035e3520a3f30d98c910d977af79791f61410ab50afce80a0554b68eccbd20
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6e820c6-984f-4ec7-a0e2-b24609338a35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6e820c6-984f-4ec7-a0e2-b24609338a35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c6e820c6-984f-4ec7-a0e2-b24609338a35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x16035e3520a3f30d98c910d977af79791f61410ab50afce80a0554b68eccbd20","name":"Nikolaus Harnoncourt","registered_at":"2026-06-20T21:48:37Z","symbol":"NIM1723644","token_address":"0x273af54a9293c9e698d724bf8ed1762890c248f6","type":"artist","uuid":"c6e820c6-984f-4ec7-a0e2-b24609338a35"}
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 0x16035e3520a3f30d98c910d977af79791f61410ab50afce80a0554b68eccbd20. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6e820c6-984f-4ec7-a0e2-b24609338a35.json and https://artists.proofprofile.net/proofs/artist/c6e820c6-984f-4ec7-a0e2-b24609338a35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x16035e3520a3f30d98c910d977af79791f61410ab50afce80a0554b68eccbd20","name":"Nikolaus Harnoncourt","registered_at":"2026-06-20T21:48:37Z","symbol":"NIM1723644","token_address":"0x273af54a9293c9e698d724bf8ed1762890c248f6","type":"artist","uuid":"c6e820c6-984f-4ec7-a0e2-b24609338a35"}