Pablo Casals
type: MusicGroup
genre: chamber music
description: thumb|Fritz Kreisler, Harold Bauer, Walter Damrosch and Casals, at Carnegie Hall on 13 March 1917 Pablo Casals (29 December 187622 October 1973), also known by his birth name, Pau Casals i Defilló (Ca
popularity: 2
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5c9407b444645b1fc085b6dae5705c3ffddd8e92679d87562f536ef4ccc5e392
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d082eca-fcce-40fe-9330-5f0e6a670163.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d082eca-fcce-40fe-9330-5f0e6a670163.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d082eca-fcce-40fe-9330-5f0e6a670163
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5c9407b444645b1fc085b6dae5705c3ffddd8e92679d87562f536ef4ccc5e392","name":"Pablo Casals","registered_at":"2026-06-17T09:09:44Z","symbol":"NIM1348185","token_address":"0xc5f6523e827a1a58eea148cb97402a776d0b1e7f","type":"artist","uuid":"7d082eca-fcce-40fe-9330-5f0e6a670163"}
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 0x5c9407b444645b1fc085b6dae5705c3ffddd8e92679d87562f536ef4ccc5e392. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d082eca-fcce-40fe-9330-5f0e6a670163.json and https://artists.proofprofile.net/proofs/artist/7d082eca-fcce-40fe-9330-5f0e6a670163.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x5c9407b444645b1fc085b6dae5705c3ffddd8e92679d87562f536ef4ccc5e392","name":"Pablo Casals","registered_at":"2026-06-17T09:09:44Z","symbol":"NIM1348185","token_address":"0xc5f6523e827a1a58eea148cb97402a776d0b1e7f","type":"artist","uuid":"7d082eca-fcce-40fe-9330-5f0e6a670163"}
album: Bach, Beethoven & Brahms: Cello Suite and Sonatas
  type: MusicAlbum
  date published: 1999-02-01
album: Beethoven & Brahms Cello Sonatas
  type: MusicAlbum
  date published: 2006-01-12
album: Edward William Elgar & Camille Saint-Saëns: Masters of Music, Vol. 86
  type: MusicAlbum
  date published: 2008-01-01
album: Portrait Vol. 8
  type: MusicAlbum
  date published: 2009-03-26
album: Philharmonic Suite Vol. 2
  type: MusicAlbum
  date published: 2011-12-14
album: Pablo Casals Plays Brahms
  type: MusicAlbum
  date published: 2019-04-12