Nota Negra
type: MusicGroup
genre: mexican rock
genre: rock urbano
popularity: 15
followers: 3504
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c5409639304175c9e0c254777f9999990bdcd861087a97d6423bbe8be7371c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36ea29cb-07f0-4b8b-9e64-f729ee507411.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36ea29cb-07f0-4b8b-9e64-f729ee507411.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/36ea29cb-07f0-4b8b-9e64-f729ee507411
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c5409639304175c9e0c254777f9999990bdcd861087a97d6423bbe8be7371c9","name":"Nota Negra","registered_at":"2026-06-14T10:10:44Z","symbol":"NIM0420156","token_address":"0x6bfbd9a54fa309409beadeb9851a227070d1e58c","type":"artist","uuid":"36ea29cb-07f0-4b8b-9e64-f729ee507411"}
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 0x0c5409639304175c9e0c254777f9999990bdcd861087a97d6423bbe8be7371c9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36ea29cb-07f0-4b8b-9e64-f729ee507411.json and https://artists.proofprofile.net/proofs/artist/36ea29cb-07f0-4b8b-9e64-f729ee507411.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0x0c5409639304175c9e0c254777f9999990bdcd861087a97d6423bbe8be7371c9","name":"Nota Negra","registered_at":"2026-06-14T10:10:44Z","symbol":"NIM0420156","token_address":"0x6bfbd9a54fa309409beadeb9851a227070d1e58c","type":"artist","uuid":"36ea29cb-07f0-4b8b-9e64-f729ee507411"}
album: Vas a Llorar
  type: MusicAlbum
  date published: 2014
album: Duele Saber
  type: MusicAlbum
  date published: 2015-04-10
album: De Lo Profundo del Corazón
  type: MusicAlbum
  date published: 2020-03-02
  track: Descansa en Paz
    type: MusicRecording
    duration: PT5M15S
    duration ms: 315550
    explicit: false
    by artist: Nota Negra
    in album: De Lo Profundo del Corazón
      type: MusicAlbum
      date published: 2020-03-02
    genre: mexican rock
    genre: rock urbano
    isrc code: FR2X42043569
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T04:33:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0886ae960940779bc7d73bac635b04f768b72aef5d2f51aeaa86b0d43bab612c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42043569
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0x0886ae960940779bc7d73bac635b04f768b72aef5d2f51aeaa86b0d43bab612c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X42043569.
      date published: 2026-07-04T14:03:39Z
    audio: Descansa en Paz
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 151.16
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.288
      additional property: Energy
        type: PropertyValue
        value: 0.73
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.034
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.724
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.043
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: De la Muerte a la Vida
  type: MusicAlbum
  date published: 2021-07-05
  track: De la Muerte a la Vida
    type: MusicRecording
    duration: PT7M21S
    duration ms: 441803
    explicit: false
    by artist: Nota Negra
    in album: De la Muerte a la Vida
      type: MusicAlbum
      date published: 2021-07-05
    genre: mexican rock
    genre: rock urbano
    isrc code: FRX282161220
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T18:59:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe94c05a57eb44d3c6a165012ec26eb12bbc63440f79407c4270f7a46455fde42
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282161220
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:00:46Z
    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 0xe94c05a57eb44d3c6a165012ec26eb12bbc63440f79407c4270f7a46455fde42. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:46Z), 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/FRX282161220.
      date published: 2026-07-19T22:00:46Z
    audio: De la Muerte a la Vida
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.989
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.345
      additional property: Energy
        type: PropertyValue
        value: 0.96
      additional property: Speechiness
        type: PropertyValue
        value: 0.083
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Vivencias (1999 - 2023)
album: Nota Ebria
album: Realidades Urbanas
album: Vive

Acousticness
type: PropertyValue
value: 0.062

Instrumentalness
type: PropertyValue
value: 0.034

Liveness
type: PropertyValue
value: 0.097

Valence (Positivity)
type: PropertyValue
value: 0.426

Loudness (dB)
type: PropertyValue
value: -4.162

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Vivencias (1999 - 2023)
type: MusicAlbum
date published: 2024-07-24

Nota Ebria
type: MusicAlbum
date published: 2024-07-31

Realidades Urbanas
type: MusicAlbum
date published: 2024-09-13

Vive
type: MusicAlbum
date published: 2025-02-07