J. Castell
type: MusicGroup
genre: afrobeats
genre: afropop
popularity: 8
followers: 2721
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xf4ad65469de0f7904728ee4f6835e521294cd8367ea43aa4003c9d7a41a7855a
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d219a12d-6222-4177-87e8-7bf04155a57f.ots
additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d219a12d-6222-4177-87e8-7bf04155a57f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
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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 0xf4ad65469de0f7904728ee4f6835e521294cd8367ea43aa4003c9d7a41a7855a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d219a12d-6222-4177-87e8-7bf04155a57f.json and https://artists.proofprofile.net/proofs/artist/d219a12d-6222-4177-87e8-7bf04155a57f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xf4ad65469de0f7904728ee4f6835e521294cd8367ea43aa4003c9d7a41a7855a","name":"J. Castell","registered_at":"2026-06-21T01:27:24Z","symbol":"NIM1776058","token_address":"0x909d191b8efbcb765296db5297e2bac46ca96a01","type":"artist","uuid":"d219a12d-6222-4177-87e8-7bf04155a57f"}
album: Your Body
  type: MusicAlbum
  date published: 2008-08-11
album: We Party
  type: MusicAlbum
  date published: 2010-06-15
album: Mi Casa
  type: MusicAlbum
  date published: 2011-06-18
album: DTY (Do to You) [feat. Specikinging]
  type: MusicAlbum
  date published: 2020-09-09
  track: DTY (Do to You) [feat. Specikinging]
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165536
    explicit: false
    by artist: J. Castell
    in album: DTY (Do to You) [feat. Specikinging]
      type: MusicAlbum
      date published: 2020-09-09
    genre: afrobeats
    genre: afropop
    isrc code: QZK6L2088828
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T07:03:47+00:00
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      type: PropertyValue
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      value: 958846
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      type: PropertyValue
      value: https://blockstream.info/api/block-height/958846
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2088828
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T10:03:42Z
    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 0x1bb4ba540a2e02981783ca6a0f978b3c7b2f19dbb3a65f4bea8372f6bc4b2e4e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:42Z), 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/QZK6L2088828.
      date published: 2026-07-20T10:03:42Z
    audio: DTY (Do to You) [feat. Specikinging]
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.66
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.553
      additional property: Energy
        type: PropertyValue
        value: 0.681
      additional property: Speechiness
        type: PropertyValue
        value: 0.368
      additional property: Acousticness
        type: PropertyValue
        value: 0.478
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.23
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.857
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.612
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: La Llamada
  type: MusicAlbum
  date published: 2020-10-01
album: One Night
  type: MusicAlbum
  date published: 2020-10-16
album: Good Lovin
  type: MusicAlbum
  date published: 2020-12-04
album: Chance
  type: MusicAlbum
  date published: 2021-03-05
album: Cuarentena
  type: MusicAlbum
  date published: 2021-06-10
album: Life of the Party
  type: MusicAlbum
  date published: 2021-09-10
  track: Life of the Party
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173750
    explicit: false
    by artist: J. Castell
    in album: Life of the Party
      type: MusicAlbum
      date published: 2021-09-10
    genre: afrobeats
    genre: afropop
    isrc code: QZK6J2148808
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T12:33:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x882fd7f3cf6bd7e6adf1093161a11a5e6c9dba1955bebdb2be45426322d20a7f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958415
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2148808
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T12:50:13Z
    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 0x882fd7f3cf6bd7e6adf1093161a11a5e6c9dba1955bebdb2be45426322d20a7f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6J2148808.
      date published: 2026-07-17T12:50:13Z
    audio: Life of the Party
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.007
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Never Be Alone
album: First Thing (Friday Night)
album: MIA
album: Loco
album: Good at Love (Not)

Musical Key
type: PropertyValue
value: 7

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.838

Energy
type: PropertyValue
value: 0.561

Speechiness
type: PropertyValue
value: 0.125

Acousticness
type: PropertyValue
value: 0.131

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.057

Valence (Positivity)
type: PropertyValue
value: 0.817

Loudness (dB)
type: PropertyValue
value: -7.966

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Never Be Alone
type: MusicAlbum
date published: 2021-11-12

First Thing (Friday Night)
type: MusicAlbum
date published: 2021-12-17
track: First Thing (Friday Night)
  type: MusicRecording
  duration: PT3M3S
  duration ms: 183181
  explicit: false
  by artist: J. Castell
  in album: First Thing (Friday Night)
    type: MusicAlbum
    date published: 2021-12-17
  genre: afrobeats
  genre: afropop
  isrc code: AUMEV2182992
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T16:44:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0dc02e5df0657bf84fc072063c8d0eeb304487b306315ef9b33d6ea6ef4f7e97
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956576
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956576
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2182992
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T02:06:47Z
  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 0x0dc02e5df0657bf84fc072063c8d0eeb304487b306315ef9b33d6ea6ef4f7e97. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUMEV2182992.
    date published: 2026-07-04T02:06:47Z
  audio: First Thing (Friday Night)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.982
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.759
    additional property: Energy
      type: PropertyValue
      value: 0.836
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.133
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.029
    additional property: Liveness
      type: PropertyValue
      value: 0.115
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.678
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.642
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

MIA
type: MusicAlbum
date published: 2022-03-18

Loco
type: MusicAlbum
date published: 2022-04-15

Good at Love (Not)
type: MusicAlbum
date published: 2024-02-16