Seu Jair Do Cavaquinho
type: MusicGroup
genre: samba
popularity: 4
followers: 2769
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x478a7069244d5ec7e7b4c172614f8afafc379190aaf9f88e94c3e719bc48e23e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63d98fc7-d581-4dda-ac86-0ee9f7e6593a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63d98fc7-d581-4dda-ac86-0ee9f7e6593a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63d98fc7-d581-4dda-ac86-0ee9f7e6593a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x478a7069244d5ec7e7b4c172614f8afafc379190aaf9f88e94c3e719bc48e23e","name":"Seu Jair Do Cavaquinho","registered_at":"2026-06-17T00:26:17Z","symbol":"NIM1223327","token_address":"0x9131a63e23eeab50af0a6e3a77ee1ba692ac24df","type":"artist","uuid":"63d98fc7-d581-4dda-ac86-0ee9f7e6593a"}
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 0x478a7069244d5ec7e7b4c172614f8afafc379190aaf9f88e94c3e719bc48e23e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63d98fc7-d581-4dda-ac86-0ee9f7e6593a.json and https://artists.proofprofile.net/proofs/artist/63d98fc7-d581-4dda-ac86-0ee9f7e6593a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x478a7069244d5ec7e7b4c172614f8afafc379190aaf9f88e94c3e719bc48e23e","name":"Seu Jair Do Cavaquinho","registered_at":"2026-06-17T00:26:17Z","symbol":"NIM1223327","token_address":"0x9131a63e23eeab50af0a6e3a77ee1ba692ac24df","type":"artist","uuid":"63d98fc7-d581-4dda-ac86-0ee9f7e6593a"}
album: Seu Jair Do Cavaquinho E Arjemiro Patrocinio
  type: MusicAlbum
  date published: 2001
album: Seu Jair Do Cavaquinho E Arjemiro Patrocinio
  type: MusicAlbum
  date published: 2001
album: Seu Jair do Cavaquinho
  type: MusicAlbum
  date published: 2001-01-01
album: Seu Jair Do Cavaquinho
  type: MusicAlbum
  date published: 2001-01-01