The Grouper
type: MusicGroup
genre: indorock
popularity: 6
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde8ec012af4d6c4ea6c09fd81c60f78180fd715cda282fa4a880aba43d724c44
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954028
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954028
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a401a37-f92a-450a-b89f-57e3d8c65892.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a401a37-f92a-450a-b89f-57e3d8c65892.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a401a37-f92a-450a-b89f-57e3d8c65892
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:08:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xde8ec012af4d6c4ea6c09fd81c60f78180fd715cda282fa4a880aba43d724c44","name":"The Grouper","registered_at":"2026-06-16T09:52:33Z","symbol":"NIM1014876","token_address":"0x0e3ad918747329787c458771019766bc114e25f5","type":"artist","uuid":"3a401a37-f92a-450a-b89f-57e3d8c65892"}
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 0xde8ec012af4d6c4ea6c09fd81c60f78180fd715cda282fa4a880aba43d724c44. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a401a37-f92a-450a-b89f-57e3d8c65892.json and https://artists.proofprofile.net/proofs/artist/3a401a37-f92a-450a-b89f-57e3d8c65892.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xde8ec012af4d6c4ea6c09fd81c60f78180fd715cda282fa4a880aba43d724c44","name":"The Grouper","registered_at":"2026-06-16T09:52:33Z","symbol":"NIM1014876","token_address":"0x0e3ad918747329787c458771019766bc114e25f5","type":"artist","uuid":"3a401a37-f92a-450a-b89f-57e3d8c65892"}
album: KOPASKA
  type: MusicAlbum
  date published: 2023-07-17
  track: KOPASKA
    type: MusicRecording
    duration: PT4M49S
    duration ms: 289315
    explicit: false
    by artist: The Grouper
    in album: KOPASKA
      type: MusicAlbum
      date published: 2023-07-17
    genre: indorock
    isrc code: QZNWU2376411
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T00:44:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9d3a4df381cb5354c29a8004bdcf5d4004c08a968891413e5150fbd5836a4053
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958095
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958095
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2376411
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T04:30:08Z
    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 0x9d3a4df381cb5354c29a8004bdcf5d4004c08a968891413e5150fbd5836a4053. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWU2376411.
      date published: 2026-07-15T04:30:08Z
    audio: KOPASKA
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.877
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.424
      additional property: Energy
        type: PropertyValue
        value: 0.44
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.373
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.157
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.878
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 1962 (TORPEDO BERJIWA)
  type: MusicAlbum
  date published: 2023-07-18
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  type: MusicAlbum
  date published: 2023-08-14
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  type: MusicAlbum
  date published: 2023-08-14
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  type: MusicAlbum
  date published: 2023-08-27
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  type: MusicAlbum
  date published: 2025-05-01
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  type: MusicAlbum
  date published: 2025-05-01
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  type: MusicAlbum
  date published: 2025-05-24
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  type: MusicAlbum
  date published: 2025-05-24
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  type: MusicAlbum
  date published: 2025-06-16
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-08-16