Efrain Piña
type: MusicGroup
genre: mariachi
popularity: 2
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x95cdebec0246dd5c6f739d0aecc7614cf4f3be69336d2e81256b6b2448f43887
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/3380a210-d898-4927-be85-2881d0588d28.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3380a210-d898-4927-be85-2881d0588d28.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3380a210-d898-4927-be85-2881d0588d28
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x95cdebec0246dd5c6f739d0aecc7614cf4f3be69336d2e81256b6b2448f43887","name":"Efrain Piña","registered_at":"2026-06-16T07:27:05Z","symbol":"NIM0980160","token_address":"0x018b6f3e97dc70be3af8efc3bfd5a993023de4d2","type":"artist","uuid":"3380a210-d898-4927-be85-2881d0588d28"}
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 0x95cdebec0246dd5c6f739d0aecc7614cf4f3be69336d2e81256b6b2448f43887. 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/3380a210-d898-4927-be85-2881d0588d28.json and https://artists.proofprofile.net/proofs/artist/3380a210-d898-4927-be85-2881d0588d28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x95cdebec0246dd5c6f739d0aecc7614cf4f3be69336d2e81256b6b2448f43887","name":"Efrain Piña","registered_at":"2026-06-16T07:27:05Z","symbol":"NIM0980160","token_address":"0x018b6f3e97dc70be3af8efc3bfd5a993023de4d2","type":"artist","uuid":"3380a210-d898-4927-be85-2881d0588d28"}
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