Copenhagen untd.
type: MusicGroup
genre: jazz house
popularity: 40
followers: 1296
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x5e302fc0f3384d04e5d34e654e30f9a55818a45e9fc0c6f5bcc7a36464fb1ef9
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5e302fc0f3384d04e5d34e654e30f9a55818a45e9fc0c6f5bcc7a36464fb1ef9","name":"Copenhagen untd.","registered_at":"2026-06-12T13:20:22Z","symbol":"NIM0309899","token_address":"0x822cacee0a881a6b027a3c565371611cb0f78977","type":"artist","uuid":"f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e302fc0f3384d04e5d34e654e30f9a55818a45e9fc0c6f5bcc7a36464fb1ef9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27.json and https://artists.proofprofile.net/proofs/artist/f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x5e302fc0f3384d04e5d34e654e30f9a55818a45e9fc0c6f5bcc7a36464fb1ef9","name":"Copenhagen untd.","registered_at":"2026-06-12T13:20:22Z","symbol":"NIM0309899","token_address":"0x822cacee0a881a6b027a3c565371611cb0f78977","type":"artist","uuid":"f072e6c8-b9a2-4e0e-941c-baa5c9c1ed27"}
album: Jazzy Cigarette
  type: MusicAlbum
  date published: 2024-06-19
album: Hoping
  type: MusicAlbum
  date published: 2024-07-22
album: Dolphin
  type: MusicAlbum
  date published: 2024-09-27
  track: Jazzy Cigarette
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159516
    explicit: false
    by artist: Copenhagen untd.
    in album: Dolphin
      type: MusicAlbum
      date published: 2024-09-27
    genre: jazz house
    isrc code: QZNWX2418232
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2418232
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 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 0x538f3d7bb97964ab34c5932300d3d0aba888279433992dca9dece35df189b7ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWX2418232.
      date published: 2026-07-05T18:48:28Z
    audio: Jazzy Cigarette
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.926
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.942
      additional property: Energy
        type: PropertyValue
        value: 0.614
      additional property: Speechiness
        type: PropertyValue
        value: 0.323
      additional property: Acousticness
        type: PropertyValue
        value: 0.477
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.548
      additional property: Liveness
        type: PropertyValue
        value: 0.318
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.741
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.464
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
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  track: Hoping
    type: MusicRecording
    duration: PT1M46S
    duration ms: 106457
    explicit: false
    by artist: Copenhagen untd.
    in album: Dolphin
      type: MusicAlbum
      date published: 2024-09-27
    genre: jazz house
    isrc code: QZTAW2442915
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T21:39:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe4c77315455e5af9ca9288cd8dbd2aa0c149bf0ad171a5fd531b058a2a48247c
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2442915
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xe4c77315455e5af9ca9288cd8dbd2aa0c149bf0ad171a5fd531b058a2a48247c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAW2442915.
      date published: 2026-07-06T01:25:57Z
    audio: Hoping
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
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        value: 10
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.829
      additional property: Energy
        type: PropertyValue
        value: 0.66
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.581
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.183

Valence (Positivity)
type: PropertyValue
value: 0.585

Loudness (dB)
type: PropertyValue
value: -11.681

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major