Dirk Kaftan
type: MusicGroup
description: Dirk Kaftan (born 1971) is a German opera and concert conductor. Career Born in Marburg, West Germany, Kaftan grew up in Wittlich and Canada. At the age of 18 he began employment as a repetiteur at
popularity: 14
followers: 134
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb470c2523ea93ede2e31b35efad07724253991dd7f8889b99c6ceb59dc793cb4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b89e697-7353-4911-9638-02acd3b8ac7d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b89e697-7353-4911-9638-02acd3b8ac7d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b89e697-7353-4911-9638-02acd3b8ac7d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb470c2523ea93ede2e31b35efad07724253991dd7f8889b99c6ceb59dc793cb4","name":"Dirk Kaftan","registered_at":"2026-06-14T17:23:05Z","symbol":"NIM0523330","token_address":"0x09f7b10e8e35d88b36a2c7930ce6ee91ff1f49ec","type":"artist","uuid":"7b89e697-7353-4911-9638-02acd3b8ac7d"}
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 0xb470c2523ea93ede2e31b35efad07724253991dd7f8889b99c6ceb59dc793cb4. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b89e697-7353-4911-9638-02acd3b8ac7d.json and https://artists.proofprofile.net/proofs/artist/7b89e697-7353-4911-9638-02acd3b8ac7d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0xb470c2523ea93ede2e31b35efad07724253991dd7f8889b99c6ceb59dc793cb4","name":"Dirk Kaftan","registered_at":"2026-06-14T17:23:05Z","symbol":"NIM0523330","token_address":"0x09f7b10e8e35d88b36a2c7930ce6ee91ff1f49ec","type":"artist","uuid":"7b89e697-7353-4911-9638-02acd3b8ac7d"}