Family Underground
type: MusicGroup
popularity: 6
followers: 347
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92a7f1a327ff52e0842a40c5fc0fdcb148d2a0c40bfd7451e1988645d068cf55
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/c335a2b7-c137-4c34-ad1b-8c704fd98291.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c335a2b7-c137-4c34-ad1b-8c704fd98291.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c335a2b7-c137-4c34-ad1b-8c704fd98291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x92a7f1a327ff52e0842a40c5fc0fdcb148d2a0c40bfd7451e1988645d068cf55","name":"Family Underground","registered_at":"2026-06-20T20:06:20Z","symbol":"NIM1701857","token_address":"0x217ef526c64ac51eb4b1488e55e154689f61b0b0","type":"artist","uuid":"c335a2b7-c137-4c34-ad1b-8c704fd98291"}
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 0x92a7f1a327ff52e0842a40c5fc0fdcb148d2a0c40bfd7451e1988645d068cf55. 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/c335a2b7-c137-4c34-ad1b-8c704fd98291.json and https://artists.proofprofile.net/proofs/artist/c335a2b7-c137-4c34-ad1b-8c704fd98291.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x92a7f1a327ff52e0842a40c5fc0fdcb148d2a0c40bfd7451e1988645d068cf55","name":"Family Underground","registered_at":"2026-06-20T20:06:20Z","symbol":"NIM1701857","token_address":"0x217ef526c64ac51eb4b1488e55e154689f61b0b0","type":"artist","uuid":"c335a2b7-c137-4c34-ad1b-8c704fd98291"}
album: Once in a Lifetime
  type: MusicAlbum
  date published: 2010-01-01
  track: Dr. Music
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237106
    explicit: false
    by artist: Family Underground
    in album: Once in a Lifetime
      type: MusicAlbum
      date published: 2010-01-01
    isrc code: USCGJ1203304
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T12:27:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xff6207121f5fdc20e4e7d695e0380c4421c0d0d5d0d1306ed7d27c54a9517e56
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1203304
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0xff6207121f5fdc20e4e7d695e0380c4421c0d0d5d0d1306ed7d27c54a9517e56. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ1203304.
      date published: 2026-07-17T19:12:23Z
    audio: Dr. Music
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.976
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.596
      additional property: Energy
        type: PropertyValue
        value: 0.813
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.596
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.731
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.762
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: No Host. No Guest.
  type: MusicAlbum
  date published: 2015-03-17