Roberto Firpo Cuarteto
type: MusicGroup
genre: tango
popularity: 4
followers: 695
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd06bd46abfccd6ff3636edd46bcb833594c2db63c1871985fc3aa370a5a57803
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a952b74d-6ecd-489a-8320-96808114477f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a952b74d-6ecd-489a-8320-96808114477f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a952b74d-6ecd-489a-8320-96808114477f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd06bd46abfccd6ff3636edd46bcb833594c2db63c1871985fc3aa370a5a57803","name":"Roberto Firpo Cuarteto","registered_at":"2026-06-20T08:49:52Z","symbol":"NIM1570780","token_address":"0x2d1883a0fce7c656f6e48f6cb578c141c8cf377e","type":"artist","uuid":"a952b74d-6ecd-489a-8320-96808114477f"}
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 0xd06bd46abfccd6ff3636edd46bcb833594c2db63c1871985fc3aa370a5a57803. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a952b74d-6ecd-489a-8320-96808114477f.json and https://artists.proofprofile.net/proofs/artist/a952b74d-6ecd-489a-8320-96808114477f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xd06bd46abfccd6ff3636edd46bcb833594c2db63c1871985fc3aa370a5a57803","name":"Roberto Firpo Cuarteto","registered_at":"2026-06-20T08:49:52Z","symbol":"NIM1570780","token_address":"0x2d1883a0fce7c656f6e48f6cb578c141c8cf377e","type":"artist","uuid":"a952b74d-6ecd-489a-8320-96808114477f"}
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 3 - Recordings 1937 - 1956
  type: MusicAlbum
  date published: 2009-11-01
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 1 - Recordings 1937 - 1956
  type: MusicAlbum
  date published: 2009-11-01
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 4 - Recordings 1936 - 1950
  type: MusicAlbum
  date published: 2009-11-01
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 2 - Recordings 1937 - 1956
  type: MusicAlbum
  date published: 2009-11-01
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 6 - Recordings 1937 - 1954
  type: MusicAlbum
  date published: 2009-12-01
album: The History of Tango / Roberto Firpo - The Complete Collection, Volume 5 - Recordings 1937 - 1952
  type: MusicAlbum
  date published: 2009-12-01