HAKA
type: MusicGroup
genre: progressive trance
genre: trance
description: thumb|upright=1.25|Haka is a traditional genre of Māori dance. This painting dates from . Haka (; singular and plural haka, in both Māori and New Zealand English) are a variety of ceremonial dances in
popularity: 8
followers: 747
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4ca3b77e465b09ea4c25a0fdf90977d5c085f8f2a3f3fcac4a1c8d1b42637f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03671fb0-c1fa-4985-a553-d8b56ac62726.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03671fb0-c1fa-4985-a553-d8b56ac62726.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03671fb0-c1fa-4985-a553-d8b56ac62726
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
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 0xf4ca3b77e465b09ea4c25a0fdf90977d5c085f8f2a3f3fcac4a1c8d1b42637f8. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03671fb0-c1fa-4985-a553-d8b56ac62726.json and https://artists.proofprofile.net/proofs/artist/03671fb0-c1fa-4985-a553-d8b56ac62726.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:55:46Z
album: Zero Day EP
  type: MusicAlbum
  date published: 2017-07-07
  track: Prelude
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225117
    explicit: false
    by artist: HAKA
    in album: Zero Day EP
      type: MusicAlbum
      date published: 2017-07-07
    genre: progressive trance
    genre: trance
    isrc code: NLF711705590
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:46:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc55a223ed414cc7ff3d286cbb6934fd620f9051f068aad5b6cc1e9412f655d7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957766
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957766
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711705590
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T22:25:04Z
    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 0xfc55a223ed414cc7ff3d286cbb6934fd620f9051f068aad5b6cc1e9412f655d7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/NLF711705590.
      date published: 2026-07-12T22:25:04Z
    audio: Prelude
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.024
      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: 0.502
      additional property: Energy
        type: PropertyValue
        value: 0.696
      additional property: Speechiness
        type: PropertyValue
        value: 0.059
      additional property: Acousticness
        type: PropertyValue
        value: 0.025
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.436
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.152
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.14
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Zero Day EP
  type: MusicAlbum
  date published: 2017-07-07
album: Squadron (Arisen Flame Remix)
  type: MusicAlbum
  date published: 2018-04-20
album: Squadron (Arisen Flame Remix)
  type: MusicAlbum
  date published: 2018-04-20
album: Sentinel / Ensemble
  type: MusicAlbum
  date published: 2018-06-22
album: Sentinel / Ensemble
  type: MusicAlbum
  date published: 2018-06-22
album: Elysium
  type: MusicAlbum
  date published: 2018-09-14
album: Elysium
  type: MusicAlbum
  date published: 2018-09-14
album: Elysium
  type: MusicAlbum
  date published: 2018-10-12