The Kahil El'Zabar Quartet
type: MusicGroup
popularity: 12
followers: 2584
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b3dc28f7e086c3f2673352448856d4f580438a599b057ae3c885378ab8e6d8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f40bbcf-be06-4965-9135-d74a55e5820a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f40bbcf-be06-4965-9135-d74a55e5820a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4f40bbcf-be06-4965-9135-d74a55e5820a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7b3dc28f7e086c3f2673352448856d4f580438a599b057ae3c885378ab8e6d8d","name":"The Kahil El'Zabar Quartet","registered_at":"2026-06-14T12:44:16Z","symbol":"NIM0456783","token_address":"0x4525345721dc20b885846004f078a8dec390d93d","type":"artist","uuid":"4f40bbcf-be06-4965-9135-d74a55e5820a"}
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 0x7b3dc28f7e086c3f2673352448856d4f580438a599b057ae3c885378ab8e6d8d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f40bbcf-be06-4965-9135-d74a55e5820a.json and https://artists.proofprofile.net/proofs/artist/4f40bbcf-be06-4965-9135-d74a55e5820a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x7b3dc28f7e086c3f2673352448856d4f580438a599b057ae3c885378ab8e6d8d","name":"The Kahil El'Zabar Quartet","registered_at":"2026-06-14T12:44:16Z","symbol":"NIM0456783","token_address":"0x4525345721dc20b885846004f078a8dec390d93d","type":"artist","uuid":"4f40bbcf-be06-4965-9135-d74a55e5820a"}
album: What It Is!
  type: MusicAlbum
  date published: 2013-02-18
album: What It Is!
  type: MusicAlbum
  date published: 2015-03-31
album: A Time for Healing
  type: MusicAlbum
  date published: 2021-10-19
album: A Time for Healing
  type: MusicAlbum
  date published: 2021-10-19
album: Eddie Harris
  type: MusicAlbum
  date published: 2021-11-19
album: Eddie Harris
  type: MusicAlbum
  date published: 2021-11-19
album: Time IS
  type: MusicAlbum
  date published: 2022-01-25
album: Time IS
  type: MusicAlbum
  date published: 2022-01-25
album: A Time for Healing
  type: MusicAlbum
  date published: 2022-02-04
  track: We'll Get Through This
    type: MusicRecording
    duration: PT6M2S
    duration ms: 362776
    explicit: false
    by artist: The Kahil El'Zabar Quartet
    in album: A Time for Healing
      type: MusicAlbum
      date published: 2022-02-04
    isrc code: UKSJS2100018
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T19:56:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc2f7c76aadf5f2800b3d248e3b46ddca59dee8bf4c12f95f1e99ff02a4285f68
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958607
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958607
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKSJS2100018
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T21:01:11Z
    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 0xc2f7c76aadf5f2800b3d248e3b46ddca59dee8bf4c12f95f1e99ff02a4285f68. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UKSJS2100018.
      date published: 2026-07-18T21:01:11Z
    audio: We'll Get Through This
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 152.124
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.508
      additional property: Energy
        type: PropertyValue
        value: 0.05
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.814
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.147
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.588
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Summertime
    type: MusicRecording
    duration: PT4M27S
    duration ms: 267279
    explicit: false
    by artist: The Kahil El'Zabar Quartet
    in album: A Time for Healing
      type: MusicAlbum
      date published: 2022-02-04
    isrc code: UKSJS2100020
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T22:05:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x42e9d69305f6436c56a75ee97a5c107d1afd4281bdc28f7a3340579c1d6a0d70
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959069
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959069
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKSJS2100020
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T22:32:59Z
    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 0x42e9d69305f6436c56a75ee97a5c107d1afd4281bdc28f7a3340579c1d6a0d70. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/UKSJS2100020.
      date published: 2026-07-21T22:32:59Z
    audio: Summertime
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.815
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      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

Danceability
type: PropertyValue
value: 0.488

Energy
type: PropertyValue
value: 0.015

Speechiness
type: PropertyValue
value: 0.045

Acousticness
type: PropertyValue
value: 0.879

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.34

Valence (Positivity)
type: PropertyValue
value: 0.222

Loudness (dB)
type: PropertyValue
value: -19.081

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Minor

A Time for Healing
type: MusicAlbum
date published: 2022-02-04