Mattho Grandi & Matheus
type: MusicGroup
genre: forró
genre: piseiro
popularity: 10
followers: 344
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xe65b9fede44f2271c6eb40451c321ae5e4feaafc5db140da83cb64936831497c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e625d83a-de1b-4759-85d9-48250a2b988f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e625d83a-de1b-4759-85d9-48250a2b988f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e625d83a-de1b-4759-85d9-48250a2b988f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65b9fede44f2271c6eb40451c321ae5e4feaafc5db140da83cb64936831497c. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e625d83a-de1b-4759-85d9-48250a2b988f.json and https://artists.proofprofile.net/proofs/artist/e625d83a-de1b-4759-85d9-48250a2b988f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
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album: Põe no 12
  type: MusicAlbum
  date published: 2017-05-28
album: Aqui a Pegada É Bruta Bebê
  type: MusicAlbum
  date published: 2019-05-31
album: Pensa Num Trem Bão
  type: MusicAlbum
  date published: 2020-02-01
album: Saudade do Piseiro
  type: MusicAlbum
  date published: 2020-08-01
album: Mantendo a Tradição
  type: MusicAlbum
  date published: 2020-09-12
album: Piseiro Bruto
  type: MusicAlbum
  date published: 2022-04-28
  track: O Povão Quer Dançar
    type: MusicRecording
    duration: PT2M35S
    duration ms: 155977
    explicit: false
    by artist: Mattho Grandi & Matheus
    in album: Piseiro Bruto
      type: MusicAlbum
      date published: 2022-04-28
    genre: forró
    genre: piseiro
    isrc code: BRGM42200030
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      type: PropertyValue
      value: https://blockstream.info/api/block-height/958517
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRGM42200030
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T07:54:29Z
    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 0x5be0e8117ab34ad0c7512604910a1691c80a96dbbac16b49c4c8e6cb2ec3312e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRGM42200030.
      date published: 2026-07-18T07:54:29Z
    audio: O Povão Quer Dançar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 166.01
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.731
      additional property: Energy
        type: PropertyValue
        value: 0.876
      additional property: Speechiness
        type: PropertyValue
        value: 0.084
      additional property: Acousticness
        type: PropertyValue
        value: 0.163
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.405
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.972
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.417
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Princesinha Vaqueira
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152999
    explicit: false
    by artist: Mattho Grandi & Matheus
    in album: Piseiro Bruto
      type: MusicAlbum
      date published: 2022-04-28
    genre: forró
    genre: piseiro
    isrc code: BRGM42200027
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:03:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7655cb60813bf26b5fc3a9f343ed84636ec8bf679f970a541e3733a5ae230e77
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958832
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958832
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRGM42200027
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:03:25Z
    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 0x7655cb60813bf26b5fc3a9f343ed84636ec8bf679f970a541e3733a5ae230e77. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:25Z), 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/BRGM42200027.
      date published: 2026-07-20T08:03:25Z
    audio: Princesinha Vaqueira
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 171.906
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.696
      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: Mgm Retrô
album: Horizonte Azul Mgm Retrô
album: Vem Me Amar!
album: Mgm Retro Ela Vai Voltar
album: Xote Americano
album: Seu Amor Nao Sai de Mim

Energy
type: PropertyValue
value: 0.932

Speechiness
type: PropertyValue
value: 0.077

Acousticness
type: PropertyValue
value: 0.657

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.106

Valence (Positivity)
type: PropertyValue
value: 0.961

Loudness (dB)
type: PropertyValue
value: -3.475

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

Mgm Retrô
type: MusicAlbum
date published: 2023-06-05

Horizonte Azul Mgm Retrô
type: MusicAlbum
date published: 2023-11-17

Vem Me Amar!
type: MusicAlbum
date published: 2023-12-01

Mgm Retro Ela Vai Voltar
type: MusicAlbum
date published: 2024-02-11

Xote Americano
type: MusicAlbum
date published: 2024-02-11
track: Xote Americano
  type: MusicRecording
  duration: PT3M17S
  duration ms: 197237
  explicit: false
  by artist: Mattho Grandi & Matheus
  in album: Xote Americano
    type: MusicAlbum
    date published: 2024-02-11
  genre: forró
  genre: piseiro
  isrc code: BRGM42400001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T21:17:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb70ba493ed3743848cdf09730a076fcf07ae22a6220eb33fe3671fbc6c803006
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRGM42400001
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70ba493ed3743848cdf09730a076fcf07ae22a6220eb33fe3671fbc6c803006. 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/BRGM42400001.
    date published: 2026-07-04T10:04:33Z
  audio: Xote Americano
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 176.043
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.705
    additional property: Energy
      type: PropertyValue
      value: 0.822
    additional property: Speechiness
      type: PropertyValue
      value: 0.059
    additional property: Acousticness
      type: PropertyValue
      value: 0.061
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.275
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.92
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.125
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major

Seu Amor Nao Sai de Mim
type: MusicAlbum
date published: 2024-09-20