BLK
type: MusicGroup
genre: deep house
description: BLK may refer to: Locations Blackpool Airport (BLK), airport in England Burgenlandkreis (BLK), district in Saxony-Anhalt, Germany Organisations BLK, an Australian sports clothing company BlackRo
popularity: 12
followers: 595
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16aff400cf80791f7b2247dcc1656df5b62f27f789a60131653daf7b89509461
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953674
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a18e698-4f95-4fe4-b6f5-3e65bed90dd2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a18e698-4f95-4fe4-b6f5-3e65bed90dd2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a18e698-4f95-4fe4-b6f5-3e65bed90dd2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
additional property: OTSCanonicalRecord
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 0x16aff400cf80791f7b2247dcc1656df5b62f27f789a60131653daf7b89509461. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a18e698-4f95-4fe4-b6f5-3e65bed90dd2.json and https://artists.proofprofile.net/proofs/artist/5a18e698-4f95-4fe4-b6f5-3e65bed90dd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
album: Faces
  type: MusicAlbum
  date published: 2019-02-06
album: Faces
  type: MusicAlbum
  date published: 2019-02-06
album: What I'm Feeling
  type: MusicAlbum
  date published: 2019-06-25
album: Get Down
  type: MusicAlbum
  date published: 2019-07-09
album: No Slowing Down
  type: MusicAlbum
  date published: 2019-07-14
album: I See You
  type: MusicAlbum
  date published: 2019-08-19
album: Found a Way
  type: MusicAlbum
  date published: 2019-10-25
album: Found a Way
  type: MusicAlbum
  date published: 2019-10-25
album: Do It Right
  type: MusicAlbum
  date published: 2020-04-10
album: Heaven
  type: MusicAlbum
  date published: 2020-07-03
album: Heaven
  type: MusicAlbum
  date published: 2020-07-03
album: See It Through
  type: MusicAlbum
  date published: 2020-07-17
album: Where Did U Go
  type: MusicAlbum
  date published: 2020-08-28
  track: Where Did U Go
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165000
    explicit: false
    by artist: BLK
    in album: Where Did U Go
      type: MusicAlbum
      date published: 2020-08-28
    genre: deep house
    isrc code: CAWHO2022336
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T21:02:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x54349b88e6e2c462622b9ed25f1e51a9099d3de8cf6f3b85a8667c30e9ce550b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAWHO2022336
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 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 0x54349b88e6e2c462622b9ed25f1e51a9099d3de8cf6f3b85a8667c30e9ce550b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAWHO2022336.
      date published: 2026-07-04T10:04:33Z
    audio: Where Did U Go
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.011
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.643
      additional property: Energy
        type: PropertyValue
        value: 0.718
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.018
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.208
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.328
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.386
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Where Did U Go
  type: MusicAlbum
  date published: 2020-08-28
album: Drifting Away
  type: MusicAlbum
  date published: 2020-11-27
album: Worry
  type: MusicAlbum
  date published: 2020-12-18
album: Worry
  type: MusicAlbum
  date published: 2020-12-18
  track: Worry
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179969
    explicit: false
    by artist: BLK
    in album: Worry
      type: MusicAlbum
      date published: 2020-12-18
    genre: deep house
    isrc code: CAWHO2031073
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-22T09:48:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x528d382b460064f68fe0c8f18fdd52f89107b02f44efe21634b74070a048eba5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Worry
album: Radio

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAWHO2031073

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

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 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528d382b460064f68fe0c8f18fdd52f89107b02f44efe21634b74070a048eba5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAWHO2031073.
date published: 2026-07-02T03:55:08Z

Worry
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 134.036
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.488
additional property: Energy
  type: PropertyValue
  value: 0.8
additional property: Speechiness
  type: PropertyValue
  value: 0.16
additional property: Acousticness
  type: PropertyValue
  value: 0.071
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.121
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.455
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.73
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

Radio
type: MusicAlbum
date published: 2021-04-23

Radio
type: MusicAlbum
date published: 2021-04-23