Valdir & Luiz Castilho
type: MusicGroup
popularity: 2
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3bd9ec316315fba0352fb310f26c1c6207c7cc2438a3d4a618d7e73af190a3f7
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/ab12b742-f1d1-45ac-a0b7-a96aeabdd743.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab12b742-f1d1-45ac-a0b7-a96aeabdd743.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab12b742-f1d1-45ac-a0b7-a96aeabdd743
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3bd9ec316315fba0352fb310f26c1c6207c7cc2438a3d4a618d7e73af190a3f7","name":"Valdir & Luiz Castilho","registered_at":"2026-06-20T09:46:30Z","symbol":"NIM1582705","token_address":"0xbfe4172a1b8d18dc56c63da7d639bcdb30b16872","type":"artist","uuid":"ab12b742-f1d1-45ac-a0b7-a96aeabdd743"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9ec316315fba0352fb310f26c1c6207c7cc2438a3d4a618d7e73af190a3f7. 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/ab12b742-f1d1-45ac-a0b7-a96aeabdd743.json and https://artists.proofprofile.net/proofs/artist/ab12b742-f1d1-45ac-a0b7-a96aeabdd743.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x3bd9ec316315fba0352fb310f26c1c6207c7cc2438a3d4a618d7e73af190a3f7","name":"Valdir & Luiz Castilho","registered_at":"2026-06-20T09:46:30Z","symbol":"NIM1582705","token_address":"0xbfe4172a1b8d18dc56c63da7d639bcdb30b16872","type":"artist","uuid":"ab12b742-f1d1-45ac-a0b7-a96aeabdd743"}
album: Governador do Egito
  type: MusicAlbum
  date published: 2024-02-07
album: A Decisão de um Menino
  type: MusicAlbum
  date published: 2024-02-15
album: Aonde Está Você?
  type: MusicAlbum
  date published: 2024-07-30