Sakkura
type: MusicGroup
genre: drum and bass
popularity: 10
followers: 383
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d3e3d37e466d2f898adc1cb1d84debc1c4e5b15dffabeb775a17b4ab674c41f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953936
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953936
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206eee4e-fc11-4542-ad76-09beb3a370d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206eee4e-fc11-4542-ad76-09beb3a370d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/206eee4e-fc11-4542-ad76-09beb3a370d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:24:55Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3e3d37e466d2f898adc1cb1d84debc1c4e5b15dffabeb775a17b4ab674c41f. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/206eee4e-fc11-4542-ad76-09beb3a370d1.json and https://artists.proofprofile.net/proofs/artist/206eee4e-fc11-4542-ad76-09beb3a370d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
album: Roll With Me / Move It Around
  type: MusicAlbum
  date published: 2022-05-13
album: You Need Me
  type: MusicAlbum
  date published: 2022-12-09
album: Everybody Knows
  type: MusicAlbum
  date published: 2023-05-24
album: So Free
  type: MusicAlbum
  date published: 2024-05-31
album: Taking Me Higher / Double Filthy
  type: MusicAlbum
  date published: 2024-06-28
album: Purity / Ethereal
  type: MusicAlbum
  date published: 2024-08-02
album: ASTRAL
  type: MusicAlbum
  date published: 2024-08-30
  track: Purity
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184186
    explicit: false
    by artist: Sakkura
    in album: ASTRAL
      type: MusicAlbum
      date published: 2024-08-30
    genre: drum and bass
    isrc code: GBKQU2465296
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T13:27:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaa3674e407705021fc33aa712761e2185b9a6266f1b6878e55c86439ab1e69ee
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958430
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958430
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2465296
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T15:33:28Z
    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 0xaa3674e407705021fc33aa712761e2185b9a6266f1b6878e55c86439ab1e69ee. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBKQU2465296.
      date published: 2026-07-17T15:33:28Z
    audio: Purity
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.095
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.428
      additional property: Energy
        type: PropertyValue
        value: 0.923
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.012
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.075
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.582
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Ultrasound
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143720
    explicit: false
    by artist: Sakkura
    in album: ASTRAL
      type: MusicAlbum
      date published: 2024-08-30
    genre: drum and bass
    isrc code: GBKQU2441965
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T12:11:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xeef23a1ab42b433a911749ceb5d689dff287e5b4118f462f4f9ac607585af219
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2441965
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xeef23a1ab42b433a911749ceb5d689dff287e5b4118f462f4f9ac607585af219. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2441965.
      date published: 2026-07-02T16:51:38Z
    audio: Ultrasound
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.045
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.692
      additional property: Energy
        type: PropertyValue
        value: 0.855
      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

Speechiness
type: PropertyValue
value: 0.079

Acousticness
type: PropertyValue
value: 0.246

Instrumentalness
type: PropertyValue
value: 0.286

Liveness
type: PropertyValue
value: 0.237

Valence (Positivity)
type: PropertyValue
value: 0.198

Loudness (dB)
type: PropertyValue
value: -2.361

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major