Cassette 4 UR Crush
type: MusicGroup
popularity: 4
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68af3aa927ee38f9450e27870c03ab25266c95abd6788071f90a1e7b9b371669
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8cde384-81c0-467f-a2d7-6545c2ae9550.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8cde384-81c0-467f-a2d7-6545c2ae9550.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8cde384-81c0-467f-a2d7-6545c2ae9550
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x68af3aa927ee38f9450e27870c03ab25266c95abd6788071f90a1e7b9b371669","name":"Cassette 4 UR Crush","registered_at":"2026-06-20T22:12:21Z","symbol":"NIM1728798","token_address":"0x326c3778c46fbe4e4aa3f9c333b22114760e4842","type":"artist","uuid":"c8cde384-81c0-467f-a2d7-6545c2ae9550"}
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 0x68af3aa927ee38f9450e27870c03ab25266c95abd6788071f90a1e7b9b371669. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8cde384-81c0-467f-a2d7-6545c2ae9550.json and https://artists.proofprofile.net/proofs/artist/c8cde384-81c0-467f-a2d7-6545c2ae9550.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x68af3aa927ee38f9450e27870c03ab25266c95abd6788071f90a1e7b9b371669","name":"Cassette 4 UR Crush","registered_at":"2026-06-20T22:12:21Z","symbol":"NIM1728798","token_address":"0x326c3778c46fbe4e4aa3f9c333b22114760e4842","type":"artist","uuid":"c8cde384-81c0-467f-a2d7-6545c2ae9550"}
album: Many, Many Moons
  type: MusicAlbum
  date published: 2024-05-21
  track: Medical Aid 2
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224870
    explicit: false
    by artist: Cassette 4 UR Crush
    in album: Many, Many Moons
      type: MusicAlbum
      date published: 2024-05-21
    isrc code: QZK6H2416431
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T03:49:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5c02bcd48e79906bf78af2a739a5fefd74c2bd030a63a648a7a7d811591d5d2a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959100
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959100
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2416431
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T06:51:28Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c02bcd48e79906bf78af2a739a5fefd74c2bd030a63a648a7a7d811591d5d2a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:51:28Z), 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/QZK6H2416431.
      date published: 2026-07-22T06:51:28Z
    audio: Medical Aid 2
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.084
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.255
      additional property: Energy
        type: PropertyValue
        value: 0.912
      additional property: Speechiness
        type: PropertyValue
        value: 0.221
      additional property: Acousticness
        type: PropertyValue
        value: 0.092
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.34
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.446
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major