DJ SPF
type: MusicGroup
popularity: 6
followers: 3471
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdd3a90b0297b28567c44f2a3ab634428c43c855473cedd2dbba6a080cfc11f57
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdd3a90b0297b28567c44f2a3ab634428c43c855473cedd2dbba6a080cfc11f57","name":"DJ SPF","registered_at":"2026-06-21T13:32:41Z","symbol":"NIM1937185","token_address":"0xb9bed0adba6a09d55e4dd4c58736e23b2c4ad099","type":"artist","uuid":"f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb"}
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 0xdd3a90b0297b28567c44f2a3ab634428c43c855473cedd2dbba6a080cfc11f57. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb.json and https://artists.proofprofile.net/proofs/artist/f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xdd3a90b0297b28567c44f2a3ab634428c43c855473cedd2dbba6a080cfc11f57","name":"DJ SPF","registered_at":"2026-06-21T13:32:41Z","symbol":"NIM1937185","token_address":"0xb9bed0adba6a09d55e4dd4c58736e23b2c4ad099","type":"artist","uuid":"f24a7d01-a45b-4f2f-89a4-61dc8cd9c2eb"}
album: Cosmic Cat / Hands Up!
  type: MusicAlbum
  date published: 2018-07-30
  track: Cosmic Cat - Club Mix
    type: MusicRecording
    duration: PT7M50S
    duration ms: 470044
    explicit: false
    by artist: DJ SPF
    in album: Cosmic Cat / Hands Up!
      type: MusicAlbum
      date published: 2018-07-30
    isrc code: GBKQU1871874
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T07:57:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x73e3f7ad353f35eb2fd4b8219692a8822640b87927148696a1aa16cafd8252ac
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958700
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958700
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU1871874
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T08:09:50Z
    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 0x73e3f7ad353f35eb2fd4b8219692a8822640b87927148696a1aa16cafd8252ac. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBKQU1871874.
      date published: 2026-07-19T08:09:50Z
    audio: Cosmic Cat - Club Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.978
      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
        type: PropertyValue
        value: 0.534
      additional property: Energy
        type: PropertyValue
        value: 0.99
      additional property: Speechiness
        type: PropertyValue
        value: 0.138
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.014
      additional property: Liveness
        type: PropertyValue
        value: 0.183
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.083
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.353
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Force
  type: MusicAlbum
  date published: 2022-01-30
  track: Force - Extended Mix
    type: MusicRecording
    duration: PT5M50S
    duration ms: 350104
    explicit: false
    by artist: DJ SPF
    in album: Force
      type: MusicAlbum
      date published: 2022-01-30
    isrc code: GBKQU2205972
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T15:25:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xac55c16083d5576c47f2b82a3b2537532087997ce9a58c0cc941a107b3e1888b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2205972
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0xac55c16083d5576c47f2b82a3b2537532087997ce9a58c0cc941a107b3e1888b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBKQU2205972.
      date published: 2026-07-05T04:47:21Z
    audio: Force - Extended Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.009
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.522
      additional property: Energy
        type: PropertyValue
        value: 0.996
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0.004
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.905
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.45
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Cosmic Cat XXIII

Loudness (dB)
type: PropertyValue
value: -6.387

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

Cosmic Cat XXIII
type: MusicAlbum
date published: 2023-03-03