Leyde & Laura
type: MusicGroup
popularity: 2
followers: 1895
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x50c9a3a00fffae756c3fe86402b07c9c7ea974c2c49eea96c7cfe79a9e56a2ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed01ea91-bd1c-4113-bd04-543882a9f724.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed01ea91-bd1c-4113-bd04-543882a9f724.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed01ea91-bd1c-4113-bd04-543882a9f724
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x50c9a3a00fffae756c3fe86402b07c9c7ea974c2c49eea96c7cfe79a9e56a2ee","name":"Leyde & Laura","registered_at":"2026-06-21T11:31:00Z","symbol":"NIM1912036","token_address":"0x699a1ac1f6ba0ef2e0f4a18ebd80fa28f24faf99","type":"artist","uuid":"ed01ea91-bd1c-4113-bd04-543882a9f724"}
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 0x50c9a3a00fffae756c3fe86402b07c9c7ea974c2c49eea96c7cfe79a9e56a2ee. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed01ea91-bd1c-4113-bd04-543882a9f724.json and https://artists.proofprofile.net/proofs/artist/ed01ea91-bd1c-4113-bd04-543882a9f724.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x50c9a3a00fffae756c3fe86402b07c9c7ea974c2c49eea96c7cfe79a9e56a2ee","name":"Leyde & Laura","registered_at":"2026-06-21T11:31:00Z","symbol":"NIM1912036","token_address":"0x699a1ac1f6ba0ef2e0f4a18ebd80fa28f24faf99","type":"artist","uuid":"ed01ea91-bd1c-4113-bd04-543882a9f724"}
album: Viola Pura
  type: MusicAlbum
  date published: 2010-05-01
album: Meu Canto Caipira (Ao Vivo)
  type: MusicAlbum
  date published: 2010-07-02
album: Meu Canto Caipira
  type: MusicAlbum
  date published: 2010-11-03
album: A Força do Amor
  type: MusicAlbum
  date published: 2010-11-03
album: A Força do Amor
  type: MusicAlbum
  date published: 2011-11-01
album: Viola & Cantador
  type: MusicAlbum
  date published: 2012-03-01
album: Leyde & Laura e Convidados (Ao Vivo)
  type: MusicAlbum
  date published: 2018-01-01
track: Minha Viola
  type: MusicRecording
  duration: PT2M32S
  duration ms: 152826
  explicit: false
  by artist: Leyde & Laura
  in album: 60 Anos do Pagode de Viola Caipira no Brasil
    type: MusicAlbum
    date published: 2005-06-06
  popularity: 0
  isrc code: BRRBM2001235
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-08-01T03:22:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8466c3c55ef63abd6bb45b73c2c9de8c35774cecb6c8d854c347cd3e1ea33cde
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960503
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960503
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRRBM2001235
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T03:41:24Z
  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 0x8466c3c55ef63abd6bb45b73c2c9de8c35774cecb6c8d854c347cd3e1ea33cde. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BRRBM2001235.
    date published: 2026-08-01T03:41:24Z
  audio: Minha Viola
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.693
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.767
    additional property: Energy
      type: PropertyValue
      value: 0.673
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.496
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.117
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.904
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.718
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Desafio dos Sexos
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193493
  explicit: false
  by artist: Leyde & Laura
  by artist: João Carreiro & Capataz
  in album: Barretão 2013
    type: MusicAlbum
    date published: 2013-09-17
  isrc code: BRFME1200024
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T17:03:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5db9552305f89652efcdf368dc5ddc5bea4b60175f5004e0d245708339525b39
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960164
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960164
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFME1200024
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T23:23:05Z
  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 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 0x5db9552305f89652efcdf368dc5ddc5bea4b60175f5004e0d245708339525b39. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRFME1200024.
    date published: 2026-07-29T23:23:05Z
  audio: Desafio dos Sexos
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.786
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.709
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Energy
type: PropertyValue
value: 0.872

Speechiness
type: PropertyValue
value: 0.051

Acousticness
type: PropertyValue
value: 0.559

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.237

Valence (Positivity)
type: PropertyValue
value: 0.689

Loudness (dB)
type: PropertyValue
value: -7.276

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major