Casta
type: MusicGroup
description: thumb|upright=1.3|. A casta painting showing 16 racial groupings. Anonymous, 18th century, oil on canvas, 148×104 cm, , , Mexico () is a term which means "lineage" in Spanish and Portuguese and has
popularity: 5
followers: 285
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x53a1572738c23f265256a0f20a0b8b7da0b9942a9536c1bbf415b8bb21eb2556
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9cb4a9e-66a1-439b-a412-bf6c8766bfa4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9cb4a9e-66a1-439b-a412-bf6c8766bfa4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9cb4a9e-66a1-439b-a412-bf6c8766bfa4
additional property: OTSTimestamp
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  value: 2026-06-21T18:08:38Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a1572738c23f265256a0f20a0b8b7da0b9942a9536c1bbf415b8bb21eb2556. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9cb4a9e-66a1-439b-a412-bf6c8766bfa4.json and https://artists.proofprofile.net/proofs/artist/f9cb4a9e-66a1-439b-a412-bf6c8766bfa4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
album: The Downfall
  type: MusicAlbum
  date published: 2010-01-07
album: Sound of Satisfaction
  type: MusicAlbum
  date published: 2011-10-17
album: Interestelar
  type: MusicAlbum
  date published: 2020-01-28
album: Naiv
  type: MusicAlbum
  date published: 2020-04-01
album: El Viaje
  type: MusicAlbum
  date published: 2020-05-20
album: Cristal
  type: MusicAlbum
  date published: 2021-10-15
album: Gravitational waves
  type: MusicAlbum
  date published: 2021-11-12
album: Lázaro
  type: MusicAlbum
  date published: 2021-11-26
  track: Pandemia
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256551
    explicit: false
    by artist: Casta
    in album: Lázaro
      type: MusicAlbum
      date published: 2021-11-26
    isrc code: DEG932104271
    additional property: CopyrightID
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEG932104271
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:27:02Z
    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 0x6fe2c3516fe65b6ba6df2052d421ae3f5ec0da79e57030b0784f2b49ac5a7b59. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEG932104271.
      date published: 2026-07-17T08:27:02Z
    audio: Pandemia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.64
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: José Raúl (Practice. Be Grateful. Have Faith.) Vol. 2: Viaje Sideral
  type: MusicAlbum
  date published: 2022-11-25
album: Pantera Premium
  type: MusicAlbum
  date published: 2024-06-28
album: Aqua Spiritu
  type: MusicAlbum
  date published: 2025-01-03
album: Aqua Spiritu
  type: MusicAlbum
  date published: 2025-01-06
album: Corriendo en El Laberinto
  type: MusicAlbum
  date published: 2025-01-31
album: Dual Reaction
  type: MusicAlbum
  date published: 2025-10-20