Maria Lazfer
type: MusicGroup
popularity: 5
followers: 184
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f658eae12e5e525d8e5337a3d9388f9c2c9195a0a7b2d62f82d77cd724595d7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83bc726a-720d-44c6-8bd3-c1de3ab9090b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83bc726a-720d-44c6-8bd3-c1de3ab9090b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/83bc726a-720d-44c6-8bd3-c1de3ab9090b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4f658eae12e5e525d8e5337a3d9388f9c2c9195a0a7b2d62f82d77cd724595d7","name":"Maria Lazfer","registered_at":"2026-06-17T11:57:06Z","symbol":"NIM1388110","token_address":"0x2d9360f9305b684b5049c3dbb8bd8a6d4244f232","type":"artist","uuid":"83bc726a-720d-44c6-8bd3-c1de3ab9090b"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f658eae12e5e525d8e5337a3d9388f9c2c9195a0a7b2d62f82d77cd724595d7. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83bc726a-720d-44c6-8bd3-c1de3ab9090b.json and https://artists.proofprofile.net/proofs/artist/83bc726a-720d-44c6-8bd3-c1de3ab9090b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x4f658eae12e5e525d8e5337a3d9388f9c2c9195a0a7b2d62f82d77cd724595d7","name":"Maria Lazfer","registered_at":"2026-06-17T11:57:06Z","symbol":"NIM1388110","token_address":"0x2d9360f9305b684b5049c3dbb8bd8a6d4244f232","type":"artist","uuid":"83bc726a-720d-44c6-8bd3-c1de3ab9090b"}
album: Como Te Explico
  type: MusicAlbum
  date published: 2016-09-26
album: No Te Olvidaras de Mi
  type: MusicAlbum
  date published: 2016-10-03
album: Alto Total (feat. Jaku)
  type: MusicAlbum
  date published: 2017-02-03
album: No Eres para Mi
  type: MusicAlbum
  date published: 2017-10-27
album: Cae la Lluvia
  type: MusicAlbum
  date published: 2018-04-11
album: Contigo
  type: MusicAlbum
  date published: 2018-06-19
album: No Vuelvo Contigo
  type: MusicAlbum
  date published: 2018-11-15
album: Atemporal
  type: MusicAlbum
  date published: 2019-10-15
album: Y No Me Importa
  type: MusicAlbum
  date published: 2020-03-24
album: Sin Final Feliz
  type: MusicAlbum
  date published: 2020-12-03
album: El Rockstar
  type: MusicAlbum
  date published: 2021-03-26
album: Desaparecer
  type: MusicAlbum
  date published: 2021-08-12
album: Que Retiemble Con Fuerza
  type: MusicAlbum
  date published: 2022-02-20
  track: Que Retiemble Con Fuerza
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184537
    explicit: true
    by artist: Maria Lazfer
    in album: Que Retiemble Con Fuerza
      type: MusicAlbum
      date published: 2022-02-20
    isrc code: USCGH2251571
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T23:54:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x56ea09636182991a4b31b7be7196c484f8a945a90df5a6470ed88069c945b971
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958340
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958340
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2251571
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:53:26Z
    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 0x56ea09636182991a4b31b7be7196c484f8a945a90df5a6470ed88069c945b971. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGH2251571.
      date published: 2026-07-17T00:53:26Z
    audio: Que Retiemble Con Fuerza
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.036
      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: 0.678
      additional property: Energy
        type: PropertyValue
        value: 0.754
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.013
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.067
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.709
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.393
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: No Quiero
  type: MusicAlbum
  date published: 2023-01-11
album: 333
  type: MusicAlbum
  date published: 2024-06-19
album: Siempre Me Quedará
  type: MusicAlbum
  date published: 2024-06-26
album: Transparente
  type: MusicAlbum
  date published: 2024-10-04