Nacho Castro
type: MusicGroup
description: Ignacio "Nacho" Castro García (born 30 June 1971) is a Spanish football coach and a former player who played mainly as a defensive midfielder. He is the manager of Liga de Expansión MX club Venados.
popularity: 5
followers: 206
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x088f0b02a3e2dfd52a7ea362cc7b8d1b60a37bb58c8c34ec16f2766c06a1f337
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12cc7b9e-4c06-4a42-a01e-d51cfff2ca24.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/12cc7b9e-4c06-4a42-a01e-d51cfff2ca24.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12cc7b9e-4c06-4a42-a01e-d51cfff2ca24
additional property: OTSTimestamp
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  value: 2026-06-16T06:37:25Z
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 0x088f0b02a3e2dfd52a7ea362cc7b8d1b60a37bb58c8c34ec16f2766c06a1f337. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12cc7b9e-4c06-4a42-a01e-d51cfff2ca24.json and https://artists.proofprofile.net/proofs/artist/12cc7b9e-4c06-4a42-a01e-d51cfff2ca24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x088f0b02a3e2dfd52a7ea362cc7b8d1b60a37bb58c8c34ec16f2766c06a1f337","name":"Nacho Castro","registered_at":"2026-06-15T20:11:34Z","symbol":"NIM0818865","token_address":"0xd26d0edb1cb498fa23baa2d943c1051f5aced785","type":"artist","uuid":"12cc7b9e-4c06-4a42-a01e-d51cfff2ca24"}
album: Dos Mundos
  type: MusicAlbum
  date published: 2017-11-08
  track: Dos Mundos
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200815
    explicit: false
    by artist: Nacho Castro
    in album: Dos Mundos
      type: MusicAlbum
      date published: 2017-11-08
    isrc code: ES71G1760405
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T03:17:03Z
    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 0x017554994f303be1df95c617c75f75cf0bccd8caac5a9f11662d1374a8227ef2. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ES71G1760405.
      date published: 2026-07-15T03:17:03Z
    audio: Dos Mundos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 165.954
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.601
      additional property: Energy
        type: PropertyValue
        value: 0.672
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.439
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.688
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor