Alfredo
type: MusicGroup
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: 10
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xadaa1aa18983327143e77761e3f45c3fc84f3ae22ec5f9dd69d7ebaba36c29d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078345d0-c387-4fe4-a960-aff77c14f4d2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078345d0-c387-4fe4-a960-aff77c14f4d2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/078345d0-c387-4fe4-a960-aff77c14f4d2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
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 0xadaa1aa18983327143e77761e3f45c3fc84f3ae22ec5f9dd69d7ebaba36c29d9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/078345d0-c387-4fe4-a960-aff77c14f4d2.json and https://artists.proofprofile.net/proofs/artist/078345d0-c387-4fe4-a960-aff77c14f4d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
album: Chica
  type: MusicAlbum
  date published: 2021-07-05
album: Manifesto
  type: MusicAlbum
  date published: 2021-12-20
album: Daimones
  type: MusicAlbum
  date published: 2023-03-01
album: Mi Amor
  type: MusicAlbum
  date published: 2023-07-19
album: Kolasi
  type: MusicAlbum
  date published: 2023-10-15
album: Pies
  type: MusicAlbum
  date published: 2023-11-21
album: C'est la vie
  type: MusicAlbum
  date published: 2024-02-10
album: Mama forgive me
  type: MusicAlbum
  date published: 2024-03-15
album: Prima la familia
  type: MusicAlbum
  date published: 2024-05-10
album: Tours
  type: MusicAlbum
  date published: 2024-06-28
album: Triumph
  type: MusicAlbum
  date published: 2024-09-27
album: Last Love
  type: MusicAlbum
  date published: 2025-01-10
  track: Last Love
    type: MusicRecording
    duration: PT2M51S
    duration ms: 171785
    explicit: false
    by artist: Alfredo
    in album: Last Love
      type: MusicAlbum
      date published: 2025-01-10
    isrc code: QT3EZ2402121
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T19:13:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7e9d05e16885a6ef43c21fd4381a4c0ddd3c0469de5c8f186f35cccd2482bd76
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EZ2402121
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x7e9d05e16885a6ef43c21fd4381a4c0ddd3c0469de5c8f186f35cccd2482bd76. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3EZ2402121.
      date published: 2026-07-05T19:27:56Z
    audio: Last Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.936
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.75
      additional property: Energy
        type: PropertyValue
        value: 0.634
      additional property: Speechiness
        type: PropertyValue
        value: 0.304
      additional property: Acousticness
        type: PropertyValue
        value: 0.556
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.176
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.518
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.629
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Gia Panta
  type: MusicAlbum
  date published: 2025-03-07