Quatuor Psophos
type: MusicGroup
genre: chamber music
popularity: 2
followers: 142
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35a0729783fc8e5c34330559faa4d2ef957322a32929fffc5c22c85e4ca0c7f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2203dda7-05d1-43b9-9ae5-53bddc5e425e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2203dda7-05d1-43b9-9ae5-53bddc5e425e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2203dda7-05d1-43b9-9ae5-53bddc5e425e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x35a0729783fc8e5c34330559faa4d2ef957322a32929fffc5c22c85e4ca0c7f4","name":"Quatuor Psophos","registered_at":"2026-06-16T01:23:45Z","symbol":"NIM0893369","token_address":"0x52527f03994a9b1a90a83aac9ad3add1687beded","type":"artist","uuid":"2203dda7-05d1-43b9-9ae5-53bddc5e425e"}
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 0x35a0729783fc8e5c34330559faa4d2ef957322a32929fffc5c22c85e4ca0c7f4. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2203dda7-05d1-43b9-9ae5-53bddc5e425e.json and https://artists.proofprofile.net/proofs/artist/2203dda7-05d1-43b9-9ae5-53bddc5e425e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x35a0729783fc8e5c34330559faa4d2ef957322a32929fffc5c22c85e4ca0c7f4","name":"Quatuor Psophos","registered_at":"2026-06-16T01:23:45Z","symbol":"NIM0893369","token_address":"0x52527f03994a9b1a90a83aac9ad3add1687beded","type":"artist","uuid":"2203dda7-05d1-43b9-9ae5-53bddc5e425e"}
album: Intégrale Des Quatuors De Maurice Ohana
  type: MusicAlbum
  date published: 2004-01-01
album: Webern: Langsamer Satz - Berg: Suite lyrique - Schönberg: Quatuor No. 4
  type: MusicAlbum
  date published: 2007