Los Hermanos Duncan
type: MusicGroup
genre: calypso
popularity: 4
followers: 202
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xefa1a6b1189280436a7e8bd006fd24ece7fb71737732f8ec2e0ab18ab85a8eaa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e08ecf84-53ed-4435-947c-191eba164b31.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e08ecf84-53ed-4435-947c-191eba164b31.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e08ecf84-53ed-4435-947c-191eba164b31
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xefa1a6b1189280436a7e8bd006fd24ece7fb71737732f8ec2e0ab18ab85a8eaa","name":"Los Hermanos Duncan","registered_at":"2026-06-21T06:37:57Z","symbol":"NIM1850622","token_address":"0x3c33a9a30a9a89e2c935bf9d9581d4eb4182c95d","type":"artist","uuid":"e08ecf84-53ed-4435-947c-191eba164b31"}
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 0xefa1a6b1189280436a7e8bd006fd24ece7fb71737732f8ec2e0ab18ab85a8eaa. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e08ecf84-53ed-4435-947c-191eba164b31.json and https://artists.proofprofile.net/proofs/artist/e08ecf84-53ed-4435-947c-191eba164b31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xefa1a6b1189280436a7e8bd006fd24ece7fb71737732f8ec2e0ab18ab85a8eaa","name":"Los Hermanos Duncan","registered_at":"2026-06-21T06:37:57Z","symbol":"NIM1850622","token_address":"0x3c33a9a30a9a89e2c935bf9d9581d4eb4182c95d","type":"artist","uuid":"e08ecf84-53ed-4435-947c-191eba164b31"}
album: Joe Clark en concierto con Los Hermanos Duncan
  type: MusicAlbum
  date published: 1979-03-30
album: Popurri Antillano
  type: MusicAlbum
  date published: 1983-06-21
album: Ñaquaquinda (Remix)
  type: MusicAlbum
  date published: 2023-09-16