Black 21
type: MusicGroup
genre: psytrance
genre: trance
popularity: 14
followers: 342
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x88b29f89df83fcbeafab8c57e8642d8939a687f8872bb39d16034361c6f160d3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953709
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953709
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:31:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x88b29f89df83fcbeafab8c57e8642d8939a687f8872bb39d16034361c6f160d3","name":"Black 21","registered_at":"2026-06-14T17:46:28Z","symbol":"NIM0528911","token_address":"0xdbcde03b5ce6a9ecc0821f69c69953c3390368ed","type":"artist","uuid":"7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac"}
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 0x88b29f89df83fcbeafab8c57e8642d8939a687f8872bb39d16034361c6f160d3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac.json and https://artists.proofprofile.net/proofs/artist/7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x88b29f89df83fcbeafab8c57e8642d8939a687f8872bb39d16034361c6f160d3","name":"Black 21","registered_at":"2026-06-14T17:46:28Z","symbol":"NIM0528911","token_address":"0xdbcde03b5ce6a9ecc0821f69c69953c3390368ed","type":"artist","uuid":"7f5195f9-39b3-46a3-ad21-7b2ce2c5ccac"}
album: You And I
  type: MusicAlbum
  date published: 2015-10-16
album: This Is True Love
  type: MusicAlbum
  date published: 2015-12-21
album: Quiero Explotar
  type: MusicAlbum
  date published: 2016-06-06
album: The Cocaine
  type: MusicAlbum
  date published: 2017-08-06
album: Psychodelic Droug
  type: MusicAlbum
  date published: 2018-04-09
album: People Of The Past
  type: MusicAlbum
  date published: 2018-09-27
album: Other Language
  type: MusicAlbum
  date published: 2019-01-22
album: Shankara
  type: MusicAlbum
  date published: 2020-04-08
album: King in the North
  type: MusicAlbum
  date published: 2020-12-21
album: Cinema
  type: MusicAlbum
  date published: 2021-02-25
album: Tecno (Original Mix)
  type: MusicAlbum
  date published: 2021-03-01
album: Tecno
  type: MusicAlbum
  date published: 2021-03-01
album: Mother Of Nature
  type: MusicAlbum
  date published: 2021-04-05
album: Jamaican Style
  type: MusicAlbum
  date published: 2021-11-15
album: Life & Death
  type: MusicAlbum
  date published: 2021-12-31
album: Spiritual power
  type: MusicAlbum
  date published: 2022-01-03
album: La Canción
  type: MusicAlbum
  date published: 2022-02-28
album: Stranger Lover
  type: MusicAlbum
  date published: 2022-04-11
album: Synergia
  type: MusicAlbum
  date published: 2022-05-16
album: Life Is
  type: MusicAlbum
  date published: 2022-07-18
album: 500 steps
  type: MusicAlbum
  date published: 2022-08-12
album: Sin Ti
  type: MusicAlbum
  date published: 2022-10-03
album: Love of my Life
  type: MusicAlbum
  date published: 2023-01-23
album: Un Mal Sueño
  type: MusicAlbum
  date published: 2023-07-31
album: With Out You
  type: MusicAlbum
  date published: 2023-09-08
album: In My Head
  type: MusicAlbum
  date published: 2023-09-18
album: Intelligence Life
  type: MusicAlbum
  date published: 2023-12-04
album: Contigo
  type: MusicAlbum
  date published: 2024-04-08
album: Mtrfkrs
  type: MusicAlbum
  date published: 2024-07-12
album: All Colors
  type: MusicAlbum
  date published: 2024-12-09
album: All Colors
  type: MusicAlbum
  date published: 2024-12-09
album: Obscuridad
  type: MusicAlbum
  date published: 2024-12-23
  track: Obscuridad
    type: MusicRecording
    duration: PT5M1S
    duration ms: 301621
    explicit: false
    by artist: Black 21
    in album: Obscuridad
      type: MusicAlbum
      date published: 2024-12-23
    genre: psytrance
    genre: trance
    isrc code: NLRD52352524
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-11T15:52:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x66cbb3f1b52b3f8854bd90af594de52efcc04478192d9aab89a70cd0f0208277
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957587
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957587
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLRD52352524
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-11T16:48:26Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbb3f1b52b3f8854bd90af594de52efcc04478192d9aab89a70cd0f0208277. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLRD52352524.
      date published: 2026-07-11T16:48:26Z
    audio: Obscuridad
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.039
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.764
      additional property: Energy
        type: PropertyValue
        value: 0.817
      additional property: Speechiness
        type: PropertyValue
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0.032
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Mad Mavericks

Instrumentalness
type: PropertyValue
value: 0.136

Liveness
type: PropertyValue
value: 0.13

Valence (Positivity)
type: PropertyValue
value: 0.327

Loudness (dB)
type: PropertyValue
value: -6.252

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Mad Mavericks
type: MusicAlbum
date published: 2025-05-27