Hollaback Nerds
type: MusicGroup
popularity: 4
followers: 745
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae6f198fde73bffd2209cebd2c2cc1e9b419dbcfb661f50642431bde80df5d4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9e75e1b-052b-4c96-8328-009de9a71c46.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9e75e1b-052b-4c96-8328-009de9a71c46.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9e75e1b-052b-4c96-8328-009de9a71c46
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae6f198fde73bffd2209cebd2c2cc1e9b419dbcfb661f50642431bde80df5d4f","name":"Hollaback Nerds","registered_at":"2026-06-20T22:34:26Z","symbol":"NIM1735937","token_address":"0xf3a9914a6efe25a00c3faab1904bc88273d15df5","type":"artist","uuid":"c9e75e1b-052b-4c96-8328-009de9a71c46"}
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 0xae6f198fde73bffd2209cebd2c2cc1e9b419dbcfb661f50642431bde80df5d4f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9e75e1b-052b-4c96-8328-009de9a71c46.json and https://artists.proofprofile.net/proofs/artist/c9e75e1b-052b-4c96-8328-009de9a71c46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xae6f198fde73bffd2209cebd2c2cc1e9b419dbcfb661f50642431bde80df5d4f","name":"Hollaback Nerds","registered_at":"2026-06-20T22:34:26Z","symbol":"NIM1735937","token_address":"0xf3a9914a6efe25a00c3faab1904bc88273d15df5","type":"artist","uuid":"c9e75e1b-052b-4c96-8328-009de9a71c46"}
album: Mollymauk Vs Caleb Rap Battle
  type: MusicAlbum
  date published: 2018-11-08
  track: Mollymauk Vs Caleb Rap Battle
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224304
    explicit: true
    by artist: Hollaback Nerds
    in album: Mollymauk Vs Caleb Rap Battle
      type: MusicAlbum
      date published: 2018-11-08
    isrc code: QZK6Q1998209
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:29:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc1d6efa24d22c8e1123edf8e31a89daf1549ea0c1e661d95d9517fd09ffd2d9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958853
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958853
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q1998209
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T11:31:09Z
    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 0xfc1d6efa24d22c8e1123edf8e31a89daf1549ea0c1e661d95d9517fd09ffd2d9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:09Z), 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/QZK6Q1998209.
      date published: 2026-07-20T11:31:09Z
    audio: Mollymauk Vs Caleb Rap Battle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.052
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.624
      additional property: Energy
        type: PropertyValue
        value: 0.794
      additional property: Speechiness
        type: PropertyValue
        value: 0.38
      additional property: Acousticness
        type: PropertyValue
        value: 0.205
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.829
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.526
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.565
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Yasha Vs Beauregard (Ultimate Rap Battle)
  type: MusicAlbum
  date published: 2019-12-04
album: Fjord Vs Nott (Ultimate Rap Battle)
  type: MusicAlbum
  date published: 2021-03-25
album: The Ultimate BARD Rap
  type: MusicAlbum
  date published: 2021-09-10