PC Castilho
type: MusicGroup
genre: nova mpb
popularity: 3
followers: 506
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cf0543c112df276c29077e8908d8a9ced50921370415957e4cd45952d3d043b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdbfc21d-a3ce-47f9-b9de-118b0d22210b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdbfc21d-a3ce-47f9-b9de-118b0d22210b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cdbfc21d-a3ce-47f9-b9de-118b0d22210b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0cf0543c112df276c29077e8908d8a9ced50921370415957e4cd45952d3d043b","name":"PC Castilho","registered_at":"2026-06-20T23:41:55Z","symbol":"NIM1751064","token_address":"0x5289bd7a34a4785d525042e5c36527dcfbad18af","type":"artist","uuid":"cdbfc21d-a3ce-47f9-b9de-118b0d22210b"}
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 0x0cf0543c112df276c29077e8908d8a9ced50921370415957e4cd45952d3d043b. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdbfc21d-a3ce-47f9-b9de-118b0d22210b.json and https://artists.proofprofile.net/proofs/artist/cdbfc21d-a3ce-47f9-b9de-118b0d22210b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x0cf0543c112df276c29077e8908d8a9ced50921370415957e4cd45952d3d043b","name":"PC Castilho","registered_at":"2026-06-20T23:41:55Z","symbol":"NIM1751064","token_address":"0x5289bd7a34a4785d525042e5c36527dcfbad18af","type":"artist","uuid":"cdbfc21d-a3ce-47f9-b9de-118b0d22210b"}
album: Vento Leste_As Canções
  type: MusicAlbum
  date published: 2008-09-13
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  type: MusicAlbum
  date published: 2009-09-13
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  type: MusicAlbum
  date published: 2019-05-01
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  type: MusicAlbum
  date published: 2020-01-31
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  type: MusicAlbum
  date published: 2021-09-18
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  type: MusicAlbum
  date published: 2024-08-02