Berlin Chamber Duo
type: MusicGroup
popularity: 5
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6275d5befcf61d8018eaeb91ebd7478a41c79ea240d5abe0ff17d8aaaa9839d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b020ec55-75fc-4a60-a60d-319d65f52179.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b020ec55-75fc-4a60-a60d-319d65f52179.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b020ec55-75fc-4a60-a60d-319d65f52179
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6275d5befcf61d8018eaeb91ebd7478a41c79ea240d5abe0ff17d8aaaa9839d1","name":"Berlin Chamber Duo","registered_at":"2026-06-20T11:46:06Z","symbol":"NIM1604912","token_address":"0x7545380b338986dfa87c3c6e91bd90ee481bda0b","type":"artist","uuid":"b020ec55-75fc-4a60-a60d-319d65f52179"}
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 0x6275d5befcf61d8018eaeb91ebd7478a41c79ea240d5abe0ff17d8aaaa9839d1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b020ec55-75fc-4a60-a60d-319d65f52179.json and https://artists.proofprofile.net/proofs/artist/b020ec55-75fc-4a60-a60d-319d65f52179.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x6275d5befcf61d8018eaeb91ebd7478a41c79ea240d5abe0ff17d8aaaa9839d1","name":"Berlin Chamber Duo","registered_at":"2026-06-20T11:46:06Z","symbol":"NIM1604912","token_address":"0x7545380b338986dfa87c3c6e91bd90ee481bda0b","type":"artist","uuid":"b020ec55-75fc-4a60-a60d-319d65f52179"}
album: Schumann & Franck: Violin Sonatas (Arr. for Viola & Piano)
  type: MusicAlbum
  date published: 2018-08-17
  track: Dichterliebe, Op. 48 (Arr. for Viola & Piano): No. 1, Im wunderschönen Monat Mai
    type: MusicRecording
    duration: PT1M36S
    duration ms: 96053
    explicit: false
    by artist: Berlin Chamber Duo
    in album: Schumann & Franck: Violin Sonatas (Arr. for Viola & Piano)
      type: MusicAlbum
      date published: 2018-08-17
    isrc code: DEAD61802704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T01:27:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x81cbfd9ee5a2600b9b4a20f13f57716df7b7228ae1fdf00bf8d9e992c501c98e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61802704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0x81cbfd9ee5a2600b9b4a20f13f57716df7b7228ae1fdf00bf8d9e992c501c98e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAD61802704.
      date published: 2026-07-18T04:13:26Z
    audio: Dichterliebe, Op. 48 (Arr. for Viola & Piano): No. 1, Im wunderschönen Monat Mai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.685
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.296
      additional property: Energy
        type: PropertyValue
        value: 0.043
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.992
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.097
      additional property: Liveness
        type: PropertyValue
        value: 0.073
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.075
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.791
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Schumann & Franck: Violin Sonatas (Arr. for Viola & Piano)
  type: MusicAlbum
  date published: 2018-08-17