2 0 2 1
type: MusicGroup
popularity: 5
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1645d3dd4588823a0bff6de8731bb35488f3a7f28ef2fd0ef2edd1c2bfcd1de
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/75b3978d-9d64-4b82-949d-c561790c07cb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/75b3978d-9d64-4b82-949d-c561790c07cb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/75b3978d-9d64-4b82-949d-c561790c07cb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc1645d3dd4588823a0bff6de8731bb35488f3a7f28ef2fd0ef2edd1c2bfcd1de","name":"2 0 2 1","registered_at":"2026-06-17T06:36:42Z","symbol":"NIM1311734","token_address":"0xa92c360ded163b6f33bc8c7912347a1b074487c0","type":"artist","uuid":"75b3978d-9d64-4b82-949d-c561790c07cb"}
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 0xc1645d3dd4588823a0bff6de8731bb35488f3a7f28ef2fd0ef2edd1c2bfcd1de. 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/75b3978d-9d64-4b82-949d-c561790c07cb.json and https://artists.proofprofile.net/proofs/artist/75b3978d-9d64-4b82-949d-c561790c07cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc1645d3dd4588823a0bff6de8731bb35488f3a7f28ef2fd0ef2edd1c2bfcd1de","name":"2 0 2 1","registered_at":"2026-06-17T06:36:42Z","symbol":"NIM1311734","token_address":"0xa92c360ded163b6f33bc8c7912347a1b074487c0","type":"artist","uuid":"75b3978d-9d64-4b82-949d-c561790c07cb"}
album: Tận Hưởng (Remix)
  type: MusicAlbum
  date published: 2024-11-22
album: Sự Thât (Thịnh Gia)
  type: MusicAlbum
  date published: 2025-06-30