Los Negativos
type: MusicGroup
genre: new rave
genre: power pop
genre: psychedelic pop
popularity: 8
followers: 3063
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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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 0xc451c56c28650014f7aacede7891fd7043066cfce3e2121fc13782f14126cdb3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6112cd3d-e770-4a78-9e94-c14afee561e8.json and https://artists.proofprofile.net/proofs/artist/6112cd3d-e770-4a78-9e94-c14afee561e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc451c56c28650014f7aacede7891fd7043066cfce3e2121fc13782f14126cdb3","name":"Los Negativos","registered_at":"2026-06-16T23:27:18Z","symbol":"NIM1209258","token_address":"0x0dead34dc6dfcfe26ab093d203316843b9137942","type":"artist","uuid":"6112cd3d-e770-4a78-9e94-c14afee561e8"}
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 1986-01-03
  track: Moscas y Arañas
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167760
    explicit: false
    by artist: Los Negativos
    in album: Piknik Caleidoscópico
      type: MusicAlbum
      date published: 1986-01-03
    genre: new rave
    genre: power pop
    genre: psychedelic pop
    isrc code: ES5062005007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5062005007
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xf8523a23552a9af14ce1fd02abbabd51a931e9af6671b4522630aff907cd6e78. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5062005007.
      date published: 2026-07-05T10:01:46Z
    audio: Moscas y Arañas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 155.306
      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: 0.269
      additional property: Energy
        type: PropertyValue
        value: 0.945
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.043
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.496
      additional property: Liveness
        type: PropertyValue
        value: 0.274
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.616
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.61
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 1986-01-03
album: 18º Sábado Amarillo
  type: MusicAlbum
  date published: 1987-02-03
album: 18º Sábado Amarillo
  type: MusicAlbum
  date published: 1987-02-03
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 2005
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 2005-01-01
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 2005-10-31
album: Piknik Caleidoscópico
  type: MusicAlbum
  date published: 2005-10-31
album: Duplexin
  type: MusicAlbum
  date published: 2016-01-15