The Classmen
type: MusicGroup
popularity: 6
followers: 147
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xddc4999ef3cd81cccc656825b4b824064e836e4b3c7d1a7f9e55d54eeddc33f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfd1594f-f1d3-427a-8807-0a8bdd651952.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfd1594f-f1d3-427a-8807-0a8bdd651952.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bfd1594f-f1d3-427a-8807-0a8bdd651952
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xddc4999ef3cd81cccc656825b4b824064e836e4b3c7d1a7f9e55d54eeddc33f9","name":"The Classmen","registered_at":"2026-06-20T18:46:26Z","symbol":"NIM1682433","token_address":"0x683b6c0eb981e0e902bf220b46b9d2d96c26db53","type":"artist","uuid":"bfd1594f-f1d3-427a-8807-0a8bdd651952"}
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 0xddc4999ef3cd81cccc656825b4b824064e836e4b3c7d1a7f9e55d54eeddc33f9. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfd1594f-f1d3-427a-8807-0a8bdd651952.json and https://artists.proofprofile.net/proofs/artist/bfd1594f-f1d3-427a-8807-0a8bdd651952.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xddc4999ef3cd81cccc656825b4b824064e836e4b3c7d1a7f9e55d54eeddc33f9","name":"The Classmen","registered_at":"2026-06-20T18:46:26Z","symbol":"NIM1682433","token_address":"0x683b6c0eb981e0e902bf220b46b9d2d96c26db53","type":"artist","uuid":"bfd1594f-f1d3-427a-8807-0a8bdd651952"}
album: Doin' Me Right b/w Graduation Goodbye
  type: MusicAlbum
  date published: 2022-06-09
  track: Doin’ Me Right
    type: MusicRecording
    duration: PT2M9S
    duration ms: 129343
    explicit: false
    by artist: The Classmen
    in album: Doin' Me Right b/w Graduation Goodbye
      type: MusicAlbum
      date published: 2022-06-09
    isrc code: USCW61405404
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T18:27:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc711860ef18e1e490ee131df16886b29ced1d5555e0a0dd1061c3ef3f617ec39
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957744
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957744
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCW61405404
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T19:15:44Z
    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 0xc711860ef18e1e490ee131df16886b29ced1d5555e0a0dd1061c3ef3f617ec39. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USCW61405404.
      date published: 2026-07-12T19:15:44Z
    audio: Doin’ Me Right
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.523
      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: 0.426
      additional property: Energy
        type: PropertyValue
        value: 0.57
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.418
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.19
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.699
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.899
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major