Roberto Vaquero
type: MusicGroup
description: Roberto Vaquero Arribas (born 21 May 1986) is a Spanish political activist. He is the secretary general of the Marxist–Leninist Party (Communist Reconstruction) (PML (RC)) and the president of the Wor
popularity: 6
followers: 558
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc13359d52ec43720994d8e1e2deb1611221e05f03e80067c04cb52fd3d8f927e
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
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  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4fc35ed-1db9-43c1-be64-d67b2c4d1908.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4fc35ed-1db9-43c1-be64-d67b2c4d1908.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-21T07:29:20Z
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 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
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13359d52ec43720994d8e1e2deb1611221e05f03e80067c04cb52fd3d8f927e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4fc35ed-1db9-43c1-be64-d67b2c4d1908.json and https://artists.proofprofile.net/proofs/artist/b4fc35ed-1db9-43c1-be64-d67b2c4d1908.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xc13359d52ec43720994d8e1e2deb1611221e05f03e80067c04cb52fd3d8f927e","name":"Roberto Vaquero","registered_at":"2026-06-20T14:37:22Z","symbol":"NIM1631617","token_address":"0x7ad38ae6927f3ed7c3a96c59384c0c6b2b346811","type":"artist","uuid":"b4fc35ed-1db9-43c1-be64-d67b2c4d1908"}
album: No vuelvas nunca
  type: MusicAlbum
  date published: 2019-01-12
  track: No vuelvas nunca
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192667
    explicit: false
    by artist: Roberto Vaquero
    in album: No vuelvas nunca
      type: MusicAlbum
      date published: 2019-01-12
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU5973378
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T05:29:55Z
    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 0xd4defdf069b43f15c02f7171ebb352293a1cc02ba45e3aaa394542238c64b9d6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBSMU5973378.
      date published: 2026-07-22T05:29:55Z
    audio: No vuelvas nunca
      type: AudioObject
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.146
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.684
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Fuentes de Ortiz (Cover)
  type: MusicAlbum
  date published: 2020-06-26
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  type: MusicAlbum
  date published: 2021-10-28
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  type: MusicAlbum
  date published: 2022-03-18
album: Sempiterno
  type: MusicAlbum
  date published: 2023-05-19
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  type: MusicAlbum
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  type: MusicAlbum
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