Hardcore Brothers
type: MusicGroup
genre: gabber
popularity: 3
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b7a3d6bd53856b97af52248e33ca493aa4b364e444f7db6ded84e7f81883e22
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/873b5221-2b5f-4a3c-950c-3ff3a5854133.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/873b5221-2b5f-4a3c-950c-3ff3a5854133.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/873b5221-2b5f-4a3c-950c-3ff3a5854133
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b7a3d6bd53856b97af52248e33ca493aa4b364e444f7db6ded84e7f81883e22","name":"Hardcore Brothers","registered_at":"2026-06-17T12:44:51Z","symbol":"NIM1399484","token_address":"0xdbb5265f184cc7c1795fa4862d150a16c92df614","type":"artist","uuid":"873b5221-2b5f-4a3c-950c-3ff3a5854133"}
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 0x2b7a3d6bd53856b97af52248e33ca493aa4b364e444f7db6ded84e7f81883e22. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/873b5221-2b5f-4a3c-950c-3ff3a5854133.json and https://artists.proofprofile.net/proofs/artist/873b5221-2b5f-4a3c-950c-3ff3a5854133.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x2b7a3d6bd53856b97af52248e33ca493aa4b364e444f7db6ded84e7f81883e22","name":"Hardcore Brothers","registered_at":"2026-06-17T12:44:51Z","symbol":"NIM1399484","token_address":"0xdbb5265f184cc7c1795fa4862d150a16c92df614","type":"artist","uuid":"873b5221-2b5f-4a3c-950c-3ff3a5854133"}
album: Smoke Motherfuckers
  type: MusicAlbum
  date published: 2023-05-01
  track: Smoke Motherfuckers
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257734
    explicit: false
    by artist: Hardcore Brothers
    in album: Smoke Motherfuckers
      type: MusicAlbum
      date published: 2023-05-01
    genre: gabber
    isrc code: NLE800500145
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T06:49:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc2a94b597aea8441f753c8b7207b005f20cbe5545e959ff162933ae195b4e9f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958517
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958517
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE800500145
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T07:54:29Z
    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 0xfc2a94b597aea8441f753c8b7207b005f20cbe5545e959ff162933ae195b4e9f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/NLE800500145.
      date published: 2026-07-18T07:54:29Z
    audio: Smoke Motherfuckers
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.86
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.687
      additional property: Energy
        type: PropertyValue
        value: 0.874
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.246
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.521
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.579
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.798
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor