Alfredo
type: MusicGroup
genre: tejano
description: Alfredo (, ) is a cognate of the Anglo-Saxon name Alfred and a common Italian, Galician, Portuguese and Spanish language personal name. Given name Artists and musicians Aldo Sambrell (1931–201
popularity: 4
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb5484250e760cda8151c046f33f09bd27c2e05c384310eb90eeb18260194f906
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf0306a-1c20-4385-aaa6-3c1468d06346.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/baf0306a-1c20-4385-aaa6-3c1468d06346.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/baf0306a-1c20-4385-aaa6-3c1468d06346
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
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 0xb5484250e760cda8151c046f33f09bd27c2e05c384310eb90eeb18260194f906. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baf0306a-1c20-4385-aaa6-3c1468d06346.json and https://artists.proofprofile.net/proofs/artist/baf0306a-1c20-4385-aaa6-3c1468d06346.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
album: Himno del Hércules C.F. de Alicante
  type: MusicAlbum
  date published: 1974-01-01
  track: Himno del Hércules C.F. de Alicante
    type: MusicRecording
    duration: PT2M15S
    duration ms: 135349
    explicit: false
    by artist: Alfredo
    in album: Himno del Hércules C.F. de Alicante
      type: MusicAlbum
      date published: 1974-01-01
    genre: tejano
    isrc code: DEXO71965607
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:12:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0571510d8e475a7cf730e5cac1481a6552dfb22e2c3b7a49188dba6bafcd8756
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO71965607
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x0571510d8e475a7cf730e5cac1481a6552dfb22e2c3b7a49188dba6bafcd8756. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEXO71965607.
      date published: 2026-07-03T21:18:05Z
    audio: Himno del Hércules C.F. de Alicante
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.06
      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: 0.529
      additional property: Energy
        type: PropertyValue
        value: 0.702
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.714
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.353
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.962
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.245
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Tienes Que Comer Mas Tortillas
  type: MusicAlbum
  date published: 2004-01-01
album: Midnight Prayer
  type: MusicAlbum
  date published: 2015-11-06
album: Eternity
  type: MusicAlbum
  date published: 2022-06-08
album: you & I
  type: MusicAlbum
  date published: 2023-05-22
album: Only God
  type: MusicAlbum
  date published: 2023-06-18