Spk
type: MusicGroup
genre: afro house
genre: kizomba
genre: kuduro
description: SPK may refer to: SPK (band), Australia SPK, Soviet cosmonaut maneuvering unit Simultaneous pancreas-kidney transplant, a type of pancreas transplantation Socialist Patients' Collective () Postal
popularity: 7
followers: 297
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd54c8f8ff0ef4689e19175dc6056b0b625a233a3df6b66b4da94ebc58db38409
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6401d9ca-4d15-4dbd-87eb-d80d13d97d0b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6401d9ca-4d15-4dbd-87eb-d80d13d97d0b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6401d9ca-4d15-4dbd-87eb-d80d13d97d0b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0xd54c8f8ff0ef4689e19175dc6056b0b625a233a3df6b66b4da94ebc58db38409. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6401d9ca-4d15-4dbd-87eb-d80d13d97d0b.json and https://artists.proofprofile.net/proofs/artist/6401d9ca-4d15-4dbd-87eb-d80d13d97d0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Sabura
  type: MusicAlbum
  date published: 2018-04-22
album: Sem Cabeça
  type: MusicAlbum
  date published: 2020-02-03
album: Te Quiero
  type: MusicAlbum
  date published: 2020-07-24
album: Sara
  type: MusicAlbum
  date published: 2021-01-14
album: Madzi
  type: MusicAlbum
  date published: 2021-04-02
album: Madzi Tribe
  type: MusicAlbum
  date published: 2021-11-19
album: Má Chéri
  type: MusicAlbum
  date published: 2021-12-24
album: Muli Bwanji
  type: MusicAlbum
  date published: 2022-04-15
  track: Muli Bwanji
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139446
    explicit: true
    by artist: Spk
    in album: Muli Bwanji
      type: MusicAlbum
      date published: 2022-04-15
    genre: afro house
    genre: kizomba
    genre: kuduro
    isrc code: USCGJ2245582
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T20:11:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x885ef30161c500d803ff3b38555367bb76a0d4b74bd47ca223ae07f3c1d04cd5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959058
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959058
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2245582
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T21:09:36Z
    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 0x885ef30161c500d803ff3b38555367bb76a0d4b74bd47ca223ae07f3c1d04cd5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USCGJ2245582.
      date published: 2026-07-21T21:09:36Z
    audio: Muli Bwanji
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.941
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.781
      additional property: Energy
        type: PropertyValue
        value: 0.607
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.081
      additional property: Liveness
        type: PropertyValue
        value: 0.032
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.411
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.343
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Qual a Diferença
  type: MusicAlbum
  date published: 2022-09-30
album: High
  type: MusicAlbum
  date published: 2023-01-06
album: Ulendo
  type: MusicAlbum
  date published: 2023-02-03
album: Kandulo
  type: MusicAlbum
  date published: 2023-08-18
album: Mlongo
  type: MusicAlbum
  date published: 2024-01-05