Josh Cohen
type: MusicGroup
popularity: 5
followers: 99
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a1c49c45cc5df7975ac515f3951cccc07d78dd2940ad475b8b7e1740a94c922
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6ff8efc-d904-4c50-aa74-348d029208ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6ff8efc-d904-4c50-aa74-348d029208ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f6ff8efc-d904-4c50-aa74-348d029208ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a1c49c45cc5df7975ac515f3951cccc07d78dd2940ad475b8b7e1740a94c922","name":"Josh Cohen","registered_at":"2026-06-21T15:17:15Z","symbol":"NIM1957844","token_address":"0xe7bbc08dd99a8c0196c28eb7e415491656dac707","type":"artist","uuid":"f6ff8efc-d904-4c50-aa74-348d029208ed"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1c49c45cc5df7975ac515f3951cccc07d78dd2940ad475b8b7e1740a94c922. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6ff8efc-d904-4c50-aa74-348d029208ed.json and https://artists.proofprofile.net/proofs/artist/f6ff8efc-d904-4c50-aa74-348d029208ed.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x4a1c49c45cc5df7975ac515f3951cccc07d78dd2940ad475b8b7e1740a94c922","name":"Josh Cohen","registered_at":"2026-06-21T15:17:15Z","symbol":"NIM1957844","token_address":"0xe7bbc08dd99a8c0196c28eb7e415491656dac707","type":"artist","uuid":"f6ff8efc-d904-4c50-aa74-348d029208ed"}
album: Altissima: Works for High Baroque Trumpet
  type: MusicAlbum
  date published: 2023-01-20
  track: Concerto, GWV 308: III. Largo
    type: MusicRecording
    duration: PT1M20S
    duration ms: 80213
    explicit: false
    by artist: Josh Cohen
    in album: Altissima: Works for High Baroque Trumpet
      type: MusicAlbum
      date published: 2023-01-20
    isrc code: GBLWD2300404
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T03:33:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdbc7d2c46dee5b05acee2a56a4444fb88f1fd1813a69b60330218306a8055aaf
    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/GBLWD2300404
    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 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 0xdbc7d2c46dee5b05acee2a56a4444fb88f1fd1813a69b60330218306a8055aaf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2300404 — a six-check JSON result.
      date published: 2026-07-18T04:13:26Z
    audio: Concerto, GWV 308: III. Largo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.418
      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: 0.318
      additional property: Energy
        type: PropertyValue
        value: 0.067
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.977
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.714
      additional property: Liveness
        type: PropertyValue
        value: 0.133
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.23
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.197
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Altissima: Works for High Baroque Trumpet
  type: MusicAlbum
  date published: 2023-01-20