Mr. Klassic
type: MusicGroup
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x50d4f97c29a530cce563fad913f60bfd01504e264cc9d1623726ef309c2f4012
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x50d4f97c29a530cce563fad913f60bfd01504e264cc9d1623726ef309c2f4012","name":"Mr. Klassic","registered_at":"2026-06-17T18:28:53Z","symbol":"NIM1481532","token_address":"0x21e7f6a64cc5dce145de73ed6013b62befa209c2","type":"artist","uuid":"974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c"}
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 0x50d4f97c29a530cce563fad913f60bfd01504e264cc9d1623726ef309c2f4012. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c.json and https://artists.proofprofile.net/proofs/artist/974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x50d4f97c29a530cce563fad913f60bfd01504e264cc9d1623726ef309c2f4012","name":"Mr. Klassic","registered_at":"2026-06-17T18:28:53Z","symbol":"NIM1481532","token_address":"0x21e7f6a64cc5dce145de73ed6013b62befa209c2","type":"artist","uuid":"974d2bd5-e40e-4e97-9f69-d42c0d5fdc4c"}
album: Sunday Funday (feat. Vaughn)
  type: MusicAlbum
  date published: 2016-10-03
  track: Sunday Funday (feat. Vaughn)
    type: MusicRecording
    duration: PT2M34S
    duration ms: 154017
    explicit: true
    by artist: Mr. Klassic
    in album: Sunday Funday (feat. Vaughn)
      type: MusicAlbum
      date published: 2016-10-03
    isrc code: GBSMU3037352
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T23:53:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1dd8a948c4a4bd6092b0e6332302e35434116e5a6fa936a0e10e801f1bcb66d6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU3037352
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0x1dd8a948c4a4bd6092b0e6332302e35434116e5a6fa936a0e10e801f1bcb66d6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBSMU3037352.
      date published: 2026-07-19T07:14:39Z
    audio: Sunday Funday (feat. Vaughn)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.002
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.867
      additional property: Energy
        type: PropertyValue
        value: 0.576
      additional property: Speechiness
        type: PropertyValue
        value: 0.169
      additional property: Acousticness
        type: PropertyValue
        value: 0.048
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.655
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.771
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major