Band 21
type: MusicGroup
genre: brazilian trap
popularity: 2
followers: 144
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a0a374bc4cee2807b8ca8d569ae8ab433db98dcbbd629fb0ee74dfafbe3bb3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b97fbdf-ed35-4149-ab13-af4a5716a9e4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b97fbdf-ed35-4149-ab13-af4a5716a9e4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0b97fbdf-ed35-4149-ab13-af4a5716a9e4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a0a374bc4cee2807b8ca8d569ae8ab433db98dcbbd629fb0ee74dfafbe3bb3a","name":"Band 21","registered_at":"2026-06-15T17:27:00Z","symbol":"NIM0779618","token_address":"0x69ead36169468b6ac16c30da58ecaa66635ea8b5","type":"artist","uuid":"0b97fbdf-ed35-4149-ab13-af4a5716a9e4"}
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 0x4a0a374bc4cee2807b8ca8d569ae8ab433db98dcbbd629fb0ee74dfafbe3bb3a. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b97fbdf-ed35-4149-ab13-af4a5716a9e4.json and https://artists.proofprofile.net/proofs/artist/0b97fbdf-ed35-4149-ab13-af4a5716a9e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x4a0a374bc4cee2807b8ca8d569ae8ab433db98dcbbd629fb0ee74dfafbe3bb3a","name":"Band 21","registered_at":"2026-06-15T17:27:00Z","symbol":"NIM0779618","token_address":"0x69ead36169468b6ac16c30da58ecaa66635ea8b5","type":"artist","uuid":"0b97fbdf-ed35-4149-ab13-af4a5716a9e4"}
album: 21 anos
  type: MusicAlbum
  date published: 2021-06-18
album: 18k
  type: MusicAlbum
  date published: 2021-07-09
album: Sem Red Label
  type: MusicAlbum
  date published: 2021-07-15
album: Ballantines
  type: MusicAlbum
  date published: 2021-07-26
album: Traumas
  type: MusicAlbum
  date published: 2021-08-08
album: Nada como antes
  type: MusicAlbum
  date published: 2021-09-21
album: Odeio THC
  type: MusicAlbum
  date published: 2021-10-08
album: Sunshine
  type: MusicAlbum
  date published: 2021-11-09
album: Vida de Rei
  type: MusicAlbum
  date published: 2022-04-15
album: Monopoly
  type: MusicAlbum
  date published: 2022-11-25
album: Vice City
  type: MusicAlbum
  date published: 2023-02-18
album: Voando
  type: MusicAlbum
  date published: 2023-04-25
album: COCA
  type: MusicAlbum
  date published: 2023-07-18
album: Smirnoff
  type: MusicAlbum
  date published: 2024-10-12