Undergroundsound
type: MusicGroup
popularity: 7
followers: 161
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc9dc3b0552152ce1ccd565fa7c10745d1b8b7b6d7f3640a6b330be9b66b54e76
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3aff3e18-ffbb-4d79-8dfd-1934119c3110.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3aff3e18-ffbb-4d79-8dfd-1934119c3110.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3aff3e18-ffbb-4d79-8dfd-1934119c3110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
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 0xc9dc3b0552152ce1ccd565fa7c10745d1b8b7b6d7f3640a6b330be9b66b54e76. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aff3e18-ffbb-4d79-8dfd-1934119c3110.json and https://artists.proofprofile.net/proofs/artist/3aff3e18-ffbb-4d79-8dfd-1934119c3110.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Codigo y respeto
  type: MusicAlbum
  date published: 2022-02-26
album: Sabahell Zu
  type: MusicAlbum
  date published: 2022-03-07
album: Straight From Da Unda
  type: MusicAlbum
  date published: 2023-03-07
album: Pay Dues
  type: MusicAlbum
  date published: 2023-03-07
album: Git tha hell out
  type: MusicAlbum
  date published: 2023-06-23
album: No regretz
  type: MusicAlbum
  date published: 2023-12-07
  track: No regretz
    type: MusicRecording
    duration: PT4M45S
    duration ms: 285444
    explicit: true
    by artist: Undergroundsound
    in album: No regretz
      type: MusicAlbum
      date published: 2023-12-07
    isrc code: QZWFL2342439
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T15:20:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe9cbf076c7438f18692cdeb73aeba12f276b4b4bf8f516a2b9ff4e699ec97011
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2342439
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xe9cbf076c7438f18692cdeb73aeba12f276b4b4bf8f516a2b9ff4e699ec97011. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFL2342439.
      date published: 2026-07-02T16:51:38Z
    audio: No regretz
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.022
      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: 0.811
      additional property: Energy
        type: PropertyValue
        value: 0.666
      additional property: Speechiness
        type: PropertyValue
        value: 0.369
      additional property: Acousticness
        type: PropertyValue
        value: 0.093
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.497
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.386
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.086
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Crime Pays
  type: MusicAlbum
  date published: 2024-06-21
album: World of Crime
  type: MusicAlbum
  date published: 2025-04-10