Škampa Quartet
type: MusicGroup
genre: chamber music
genre: classical
popularity: 27
followers: 874
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba30caaa1440bc38fb9f66b1b1a223f5255c5887b47fa4bf37a4176b44932a80
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba30caaa1440bc38fb9f66b1b1a223f5255c5887b47fa4bf37a4176b44932a80","name":"Škampa Quartet","registered_at":"2026-06-11T11:55:05Z","symbol":"NIM0020369","token_address":"0x4f46cd09c755e9c6749061f3bcd753d3aa1dfadf","type":"artist","uuid":"0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6"}
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 0xba30caaa1440bc38fb9f66b1b1a223f5255c5887b47fa4bf37a4176b44932a80. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6.json and https://artists.proofprofile.net/proofs/artist/0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xba30caaa1440bc38fb9f66b1b1a223f5255c5887b47fa4bf37a4176b44932a80","name":"Škampa Quartet","registered_at":"2026-06-11T11:55:05Z","symbol":"NIM0020369","token_address":"0x4f46cd09c755e9c6749061f3bcd753d3aa1dfadf","type":"artist","uuid":"0ec803f7-0f52-4273-bbe2-5a5ae4cb4fd6"}
album: Beethoven, Smetana, Dvořák: String Quartets
  type: MusicAlbum
  date published: 1995-01-01
album: Haydn / Schubert / Ravel: String Quartets
  type: MusicAlbum
  date published: 1996-01-01
album: Haydn, Schubert, Ravel: String Quartets
  type: MusicAlbum
  date published: 1996-01-01
album: Beethoven: String Quartet in E minor, "Razumovsky" - Mozart: Quintet in A major, "Stadler-Quintet"
  type: MusicAlbum
  date published: 1997-01-01
album: Brahms, Dvořák: Strings Quartets
  type: MusicAlbum
  date published: 1998-01-01
album: Mozart, Smetana & Shostakovich (Wigmore Hall Live)
  type: MusicAlbum
  date published: 2007-01-01
album: Mozart, Smetana & Shostakovich (Wigmore Hall Live)
  type: MusicAlbum
  date published: 2007-01-01