Brian Castro
type: MusicGroup
description: Brian Albert Castro (born 1950) is an Australian novelist and essayist. Early life and education Castro was born at sea, between Macau and Hong Kong, in 1950. His father was of Spanish, Portuguese, a
popularity: 23
followers: 109
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8aeb2441d250b614130a84e49fa63e6694bf573f8cbffcf44a97f481657d041f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/45f535e0-b698-4d9c-ac25-fef535fa1723.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/45f535e0-b698-4d9c-ac25-fef535fa1723.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/45f535e0-b698-4d9c-ac25-fef535fa1723
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8aeb2441d250b614130a84e49fa63e6694bf573f8cbffcf44a97f481657d041f","name":"Brian Castro","registered_at":"2026-06-11T18:51:30Z","symbol":"NIM0091160","token_address":"0xe077b58710a1693fd0759755a9177863eeb2d34b","type":"artist","uuid":"45f535e0-b698-4d9c-ac25-fef535fa1723"}
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 0x8aeb2441d250b614130a84e49fa63e6694bf573f8cbffcf44a97f481657d041f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45f535e0-b698-4d9c-ac25-fef535fa1723.json and https://artists.proofprofile.net/proofs/artist/45f535e0-b698-4d9c-ac25-fef535fa1723.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x8aeb2441d250b614130a84e49fa63e6694bf573f8cbffcf44a97f481657d041f","name":"Brian Castro","registered_at":"2026-06-11T18:51:30Z","symbol":"NIM0091160","token_address":"0xe077b58710a1693fd0759755a9177863eeb2d34b","type":"artist","uuid":"45f535e0-b698-4d9c-ac25-fef535fa1723"}