Marcos Lessa
type: MusicGroup
genre: bossa nova
genre: forró
genre: nova mpb
popularity: 28
followers: 6758
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9c0ed00ba4a8ab8d15626a8251325ba7e5c53ecc1f794ca7f67e5728e79ba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/424cdb62-4083-4f5c-a26c-eeeef97451fd.json and https://artists.proofprofile.net/proofs/artist/424cdb62-4083-4f5c-a26c-eeeef97451fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Travessia (The Voice Brasil)
  type: MusicAlbum
  date published: 2013-01-01
album: Quem Te Viu, Quem Te Vê (The Voice Brasil)
  type: MusicAlbum
  date published: 2013-01-01
album: Arrastão (The Voice Brasil)
  type: MusicAlbum
  date published: 2013-01-01
album: Estradas: Um Tributo a Gonzaguinha
  type: MusicAlbum
  date published: 2015-09-20
  track: Sementes do Amanhã
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231293
    explicit: false
    by artist: Marcos Lessa
    in album: Estradas: Um Tributo a Gonzaguinha
      type: MusicAlbum
      date published: 2015-09-20
    genre: bossa nova
    genre: forró
    genre: nova mpb
    isrc code: BRD661500001
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fc8ce2c2d111f450390b520d71b3ed553e77c48078a02e437dd79547ae9de6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRD661500001.
      date published: 2026-07-04T10:04:33Z
    audio: Sementes do Amanhã
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.943
      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: 0.575
      additional property: Energy
        type: PropertyValue
        value: 0.299
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.864
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.274
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.496
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Entre o Mar e o Sertão
  type: MusicAlbum
  date published: 2016-09-16
  track: Andaluzia
    type: MusicRecording
    duration: PT4M36S
    duration ms: 276720
    explicit: false
    by artist: Marcos Lessa
    in album: Entre o Mar e o Sertão
      type: MusicAlbum
      date published: 2016-09-16
    genre: bossa nova
    genre: forró
    genre: nova mpb
    isrc code: BXAT11600001
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    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 0xabe0973f64ab5c869b17a2a195e0183e741355f576b0cbaafcd98660c0855dd5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BXAT11600001.
      date published: 2026-07-02T16:51:38Z
    audio: Andaluzia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 184.223
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.262
      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
album: Moa - Single
album: O Amor É Capaz
album: Ao Deus Dará (Ao Vivo)
album: Acústico Imaginar: Marcos Lessa
album: Sal, Vol. I (Ao Vivo)
album: Sal, Vol. II (Ao Vivo)
album: Sal (Ao Vivo)
album: Deslizando Na Canção
album: Virá em Dobro
album: Pra Ser Feliz
album: Ao Longo Desses Anos
album: Acústico Imaginar: Marcos Lessa (Voz e Violão)
album: Desenfreado
album: Lessa Canta Emílio: Tantas Palavras
album: Bateu Saudade
album: Samba do Lessa (Ao Vivo)
album: Quando a Dor e a Alegria Canta
album: Pastorador de Passarinhos
album: Sinceramente
album: Tudo pela Música (As Canções de Ba Freyre)

Energy
type: PropertyValue
value: 0.254

Speechiness
type: PropertyValue
value: 0.032

Acousticness
type: PropertyValue
value: 0.959

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.119

Valence (Positivity)
type: PropertyValue
value: 0.329

Loudness (dB)
type: PropertyValue
value: -11.561

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Moa - Single
type: MusicAlbum
date published: 2017-06-09

O Amor É Capaz
type: MusicAlbum
date published: 2017-09-29

Ao Deus Dará (Ao Vivo)
type: MusicAlbum
date published: 2018-10-26

Acústico Imaginar: Marcos Lessa
type: MusicAlbum
date published: 2019-01-01

Sal, Vol. I (Ao Vivo)
type: MusicAlbum
date published: 2019-01-25

Sal, Vol. II (Ao Vivo)
type: MusicAlbum
date published: 2019-03-29

Sal (Ao Vivo)
type: MusicAlbum
date published: 2019-08-09

Deslizando Na Canção
type: MusicAlbum
date published: 2019-08-23

Virá em Dobro
type: MusicAlbum
date published: 2019-12-21

Pra Ser Feliz
type: MusicAlbum
date published: 2020-06-13

Ao Longo Desses Anos
type: MusicAlbum
date published: 2020-12-18

Acústico Imaginar: Marcos Lessa (Voz e Violão)
type: MusicAlbum
date published: 2021-05-28

Desenfreado
type: MusicAlbum
date published: 2021-10-29

Lessa Canta Emílio: Tantas Palavras
type: MusicAlbum
date published: 2023-08-18

Bateu Saudade
type: MusicAlbum
date published: 2023-10-26

Samba do Lessa (Ao Vivo)
type: MusicAlbum
date published: 2023-12-22

Quando a Dor e a Alegria Canta
type: MusicAlbum
date published: 2024-04-18

Pastorador de Passarinhos
type: MusicAlbum
date published: 2024-10-10

Sinceramente
type: MusicAlbum
date published: 2024-10-10

Tudo pela Música (As Canções de Ba Freyre)
type: MusicAlbum
date published: 2025-07-22
track: Acender
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211242
  explicit: false
  by artist: Marcos Lessa
  in album: Tudo pela Música (As Canções de Ba Freyre)
    type: MusicAlbum
    date published: 2025-07-22
  genre: bossa nova
  genre: forró
  genre: nova mpb
  isrc code: BXP032500009
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXP032500009
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  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 0xa368141f70ff1c37587cc27f0c1811f4bef2d681a6278f3dd3483ea5f4afcef1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXP032500009.
    date published: 2026-07-05T10:01:46Z
  audio: Acender
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.122
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.774
    additional property: Energy
      type: PropertyValue
      value: 0.405
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.842
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.003
    additional property: Liveness
      type: PropertyValue
      value: 0.283
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.428
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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