Sergio Fernández
type: MusicGroup
description: Sergio Fernández may refer to: Sergio Fernández Larraín (1909–1983), Chilean diplomat and politician Sergio Fernández Aguayo (born 1938), Chilean politician and diplomat Sergio Fernández Fernández (1
popularity: 4
followers: 809
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfed042d71055748f26975113fd9cb47291e8cf65eb3e383d1ed2293fb4a88626
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e94c9102-1e03-4016-af42-6e9365a41594.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e94c9102-1e03-4016-af42-6e9365a41594.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e94c9102-1e03-4016-af42-6e9365a41594
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfed042d71055748f26975113fd9cb47291e8cf65eb3e383d1ed2293fb4a88626","name":"Sergio Fernández","registered_at":"2026-06-21T10:21:58Z","symbol":"NIM1897678","token_address":"0x406272e8a2bc8d21ab01e9e51009b0a4a1f59f1e","type":"artist","uuid":"e94c9102-1e03-4016-af42-6e9365a41594"}
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 0xfed042d71055748f26975113fd9cb47291e8cf65eb3e383d1ed2293fb4a88626. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e94c9102-1e03-4016-af42-6e9365a41594.json and https://artists.proofprofile.net/proofs/artist/e94c9102-1e03-4016-af42-6e9365a41594.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xfed042d71055748f26975113fd9cb47291e8cf65eb3e383d1ed2293fb4a88626","name":"Sergio Fernández","registered_at":"2026-06-21T10:21:58Z","symbol":"NIM1897678","token_address":"0x406272e8a2bc8d21ab01e9e51009b0a4a1f59f1e","type":"artist","uuid":"e94c9102-1e03-4016-af42-6e9365a41594"}
album: Nada Me Faltará
  type: MusicAlbum
  date published: 2024-11-04
  track: Nada Me Faltará
    type: MusicRecording
    duration: PT9M49S
    duration ms: 589375
    explicit: false
    by artist: Sergio Fernández
    in album: Nada Me Faltará
      type: MusicAlbum
      date published: 2024-11-04
    isrc code: QZWDW2494278
    additional property: CopyrightID
    additional property: CopyrightStatus
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      value: registered
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDW2494278
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0xa4a0fe4a8c67e99e02af4773284c301b1d197924aa47314d81cc76794305c9f8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWDW2494278.
      date published: 2026-07-05T10:59:37Z
    audio: Nada Me Faltará
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.067
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.458
      additional property: Energy
        type: PropertyValue
        value: 0.635
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.014
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.215
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.282
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.194
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major