The Fresk Quartet
type: MusicGroup
genre: chamber music
popularity: 5
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b0aa301d99b576f5cae2ca63f2c122c790927a23d79c318c5d08a3f04339dd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2646f548-b5be-4a30-952e-a127587f94bf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2646f548-b5be-4a30-952e-a127587f94bf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2646f548-b5be-4a30-952e-a127587f94bf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5b0aa301d99b576f5cae2ca63f2c122c790927a23d79c318c5d08a3f04339dd5","name":"The Fresk Quartet","registered_at":"2026-06-16T02:50:33Z","symbol":"NIM0914103","token_address":"0xae79eab6a27cdb902cabded416a4e3266994663b","type":"artist","uuid":"2646f548-b5be-4a30-952e-a127587f94bf"}
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 0x5b0aa301d99b576f5cae2ca63f2c122c790927a23d79c318c5d08a3f04339dd5. 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/2646f548-b5be-4a30-952e-a127587f94bf.json and https://artists.proofprofile.net/proofs/artist/2646f548-b5be-4a30-952e-a127587f94bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x5b0aa301d99b576f5cae2ca63f2c122c790927a23d79c318c5d08a3f04339dd5","name":"The Fresk Quartet","registered_at":"2026-06-16T02:50:33Z","symbol":"NIM0914103","token_address":"0xae79eab6a27cdb902cabded416a4e3266994663b","type":"artist","uuid":"2646f548-b5be-4a30-952e-a127587f94bf"}
album: Swedish String Quartets
  type: MusicAlbum
  date published: 2011-05-01
album: Swedish String Quartets
  type: MusicAlbum
  date published: 2011-05-01
album: Sallinen & Sibelius: String Quartets
  type: MusicAlbum
  date published: 2012-04-01
album: Sallinen & Sibelius: String Quartets
  type: MusicAlbum
  date published: 2012-04-01
album: The Complete Caprice Recordings
  type: MusicAlbum
  date published: 2023-04-14