Duck & Doc
type: MusicGroup
genre: afro house
popularity: 8
followers: 102
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b6d6bc6da7507bb7b5dd06382cb2272d381bee10fcd1f33200e16657578cf81
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953848
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953848
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/019528ba-113f-4797-988e-289951b95bd6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/019528ba-113f-4797-988e-289951b95bd6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/019528ba-113f-4797-988e-289951b95bd6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:54:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b6d6bc6da7507bb7b5dd06382cb2272d381bee10fcd1f33200e16657578cf81","name":"Duck & Doc","registered_at":"2026-06-15T14:04:42Z","symbol":"NIM0731320","token_address":"0x09020cd746de918a87236480a842ad73394326b2","type":"artist","uuid":"019528ba-113f-4797-988e-289951b95bd6"}
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 0x3b6d6bc6da7507bb7b5dd06382cb2272d381bee10fcd1f33200e16657578cf81. Chain 2 (Bitcoin): anchored in block 953848 (2026-06-15T22:54:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/019528ba-113f-4797-988e-289951b95bd6.json and https://artists.proofprofile.net/proofs/artist/019528ba-113f-4797-988e-289951b95bd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:54:37Z
  text: {"copyright_id":"0x3b6d6bc6da7507bb7b5dd06382cb2272d381bee10fcd1f33200e16657578cf81","name":"Duck & Doc","registered_at":"2026-06-15T14:04:42Z","symbol":"NIM0731320","token_address":"0x09020cd746de918a87236480a842ad73394326b2","type":"artist","uuid":"019528ba-113f-4797-988e-289951b95bd6"}
album: Follow You
  type: MusicAlbum
  date published: 2022-09-02
album: Full Moon
  type: MusicAlbum
  date published: 2023-05-12