Black Swan Classic Jazz Band
type: MusicGroup
genre: ragtime
genre: swing music
popularity: 10
followers: 601
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321a624cdb058790dbf094980f1615f69f65a7890d38109ff20a30b3d69b830a. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7de66ff-0d78-4921-bfd9-2326ad87403c.json and https://artists.proofprofile.net/proofs/artist/d7de66ff-0d78-4921-bfd9-2326ad87403c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x321a624cdb058790dbf094980f1615f69f65a7890d38109ff20a30b3d69b830a","name":"Black Swan Classic Jazz Band","registered_at":"2026-06-21T03:28:09Z","symbol":"NIM1804944","token_address":"0x4208f227443e3428ed9ee3ccb7e52987fb393779","type":"artist","uuid":"d7de66ff-0d78-4921-bfd9-2326ad87403c"}
album: Ragtime Revelry
  type: MusicAlbum
  date published: 2003-01-01
  track: The Junk Man Rag
    type: MusicRecording
    duration: PT4M26S
    duration ms: 266013
    explicit: false
    by artist: Black Swan Classic Jazz Band
    in album: Ragtime Revelry
      type: MusicAlbum
      date published: 2003-01-01
    genre: ragtime
    genre: swing music
    isrc code: USCGH0691339
    additional property: CopyrightID
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T19:35:06Z
    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 0xce6cb14d79a1892f260a4ab31e2fc6dcdb8f6ff4411c7f91c4b3e10498e5bd4e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USCGH0691339.
      date published: 2026-07-12T19:35:06Z
    audio: The Junk Man Rag
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 176.765
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.649
      additional property: Energy
        type: PropertyValue
        value: 0.249
      additional property: Speechiness
        type: PropertyValue
        value: 0.068
      additional property: Acousticness
        type: PropertyValue
        value: 0.926
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.069
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.867
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.533
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: This Joint is Jumpin'
  type: MusicAlbum
  date published: 2005-01-01
album: Feel the Spirit
  type: MusicAlbum
  date published: 2007-01-01
album: Hoagy, Heart & Soul
  type: MusicAlbum
  date published: 2016-09-01
album: Pandemonium
  type: MusicAlbum
  date published: 2021-01-31