Notos Quartett
type: MusicGroup
genre: chamber music
popularity: 2
followers: 453
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7173e6d4930080e7a0c756f6a5db17fb56928a51ef74ca7bb64c0e328ef5193
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/d2796f50-0dab-4957-a713-0d9b0a50c4dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d2796f50-0dab-4957-a713-0d9b0a50c4dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d2796f50-0dab-4957-a713-0d9b0a50c4dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7173e6d4930080e7a0c756f6a5db17fb56928a51ef74ca7bb64c0e328ef5193","name":"Notos Quartett","registered_at":"2026-06-21T01:52:27Z","symbol":"NIM1782676","token_address":"0x328324ff26cc20a62e30ec0721e0eecb7d9e73f1","type":"artist","uuid":"d2796f50-0dab-4957-a713-0d9b0a50c4dc"}
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 0xb7173e6d4930080e7a0c756f6a5db17fb56928a51ef74ca7bb64c0e328ef5193. 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/d2796f50-0dab-4957-a713-0d9b0a50c4dc.json and https://artists.proofprofile.net/proofs/artist/d2796f50-0dab-4957-a713-0d9b0a50c4dc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xb7173e6d4930080e7a0c756f6a5db17fb56928a51ef74ca7bb64c0e328ef5193","name":"Notos Quartett","registered_at":"2026-06-21T01:52:27Z","symbol":"NIM1782676","token_address":"0x328324ff26cc20a62e30ec0721e0eecb7d9e73f1","type":"artist","uuid":"d2796f50-0dab-4957-a713-0d9b0a50c4dc"}
album: Hungarian Treasures - Bartók, Dohnányi, Kodály
  type: MusicAlbum
  date published: 2017-02-24
album: Paris Bar - Françaix Tansman Lajtha
  type: MusicAlbum
  date published: 2022-03-25