Nu
type: MusicGroup
description: Nu or NU may refer to: Arts and entertainment Music Nu metal, a heavy metal fusion genre Nu jazz, a jazz fusion genre Nu-disco, a genre of dance music Nu gaze, a derivative form of shoegaze and a
popularity: 6
followers: 518
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1363ecb775252ca864924f98800218cec9f7c995ce8c947f7e2a5d24c00905f9
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/840fe9d0-08c8-45e2-aba5-5eadfd2dc485.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/840fe9d0-08c8-45e2-aba5-5eadfd2dc485.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/840fe9d0-08c8-45e2-aba5-5eadfd2dc485
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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 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 0x1363ecb775252ca864924f98800218cec9f7c995ce8c947f7e2a5d24c00905f9. 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/840fe9d0-08c8-45e2-aba5-5eadfd2dc485.json and https://artists.proofprofile.net/proofs/artist/840fe9d0-08c8-45e2-aba5-5eadfd2dc485.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: Himnos del Heavy Español
  type: MusicAlbum
  date published: 2013-08-30
album: Los Grandes del Heavy Español
  type: MusicAlbum
  date published: 2013-08-30
album: Conjuros
  type: MusicAlbum
  date published: 2018-07-13
album: Dama de Honor (Edición Especial Remasterizada)
  type: MusicAlbum
  date published: 2004-10-01
album: Dos Años de Destierro
  type: MusicAlbum
  date published: 1999-02-02
  track: Arrasando Madrid
    type: MusicRecording
    duration: PT4M31S
    duration ms: 271666
    explicit: false
    by artist: Nu
    in album: Dos Años de Destierro
      type: MusicAlbum
      date published: 1999-02-02
    isrc code: ES5629000162
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T13:47:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x47b2de79641d55d76f8734414bae29af0dc7ac103196e891569a657a5255724d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959137
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959137
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5629000162
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T16:49:13Z
    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 0x47b2de79641d55d76f8734414bae29af0dc7ac103196e891569a657a5255724d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:13Z), 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/ES5629000162.
      date published: 2026-07-22T16:49:13Z
    audio: Arrasando Madrid
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.679
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.632
      additional property: Energy
        type: PropertyValue
        value: 0.909
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.256
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.511
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.977
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: La Noche del Juglar (En Vivo)
  type: MusicAlbum
  date published: 1999-01-01
album: Las Mejores Baladas del Heavy Español
  type: MusicAlbum
  date published: 1999-01-01
album: Rock Legends
  type: MusicAlbum
  date published: 2008-03-13
album: Clásicos del Metal
  type: MusicAlbum
  date published: 2020-10-30
album: Rock de Leyenda
  type: MusicAlbum
  date published: 2000-10-01