Quadrilha Cumpade Elton
type: MusicGroup
popularity: 10
followers: 53
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc907d7af9d9e56e82c53643a4b9fa9ba3e34bec3d616026429fc803c7f18926f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc907d7af9d9e56e82c53643a4b9fa9ba3e34bec3d616026429fc803c7f18926f","name":"Quadrilha Cumpade Elton","registered_at":"2026-06-20T21:17:36Z","symbol":"NIM1716469","token_address":"0xacb5e27ddc8b4252b30fda9e34e6bb96fab7b720","type":"artist","uuid":"c575cf9b-0a0f-4cb8-ac72-d4ec087a6057"}
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 0xc907d7af9d9e56e82c53643a4b9fa9ba3e34bec3d616026429fc803c7f18926f. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.json and https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0xc907d7af9d9e56e82c53643a4b9fa9ba3e34bec3d616026429fc803c7f18926f","name":"Quadrilha Cumpade Elton","registered_at":"2026-06-20T21:17:36Z","symbol":"NIM1716469","token_address":"0xacb5e27ddc8b4252b30fda9e34e6bb96fab7b720","type":"artist","uuid":"c575cf9b-0a0f-4cb8-ac72-d4ec087a6057"}
album: Muito Prazer, Me Chamo Nordeste e Esse É Meu São João!
  type: MusicAlbum
  date published: 2023-06-10
  track: Eu Sou São João
    type: MusicRecording
    duration: PT2M9S
    duration ms: 129567
    explicit: false
    by artist: Quadrilha Cumpade Elton
    in album: Muito Prazer, Me Chamo Nordeste e Esse É Meu São João!
      type: MusicAlbum
      date published: 2023-06-10
    isrc code: QZNJW2368431
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:17:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1d32a6239a379475443e487a3a025da6fa75ed77439169597cb8a06570b371fd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2368431
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32a6239a379475443e487a3a025da6fa75ed77439169597cb8a06570b371fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2368431.
      date published: 2026-07-03T21:18:05Z
    audio: Eu Sou São João
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 177.89
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.688
      additional property: Energy
        type: PropertyValue
        value: 0.66
      additional property: Speechiness
        type: PropertyValue
        value: 0.076
      additional property: Acousticness
        type: PropertyValue
        value: 0.016
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.373
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.716
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.143
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: É Proibido Cochilar
    type: MusicRecording
    duration: PT1M8S
    duration ms: 68989
    explicit: false
    by artist: Quadrilha Cumpade Elton
    in album: Muito Prazer, Me Chamo Nordeste e Esse É Meu São João!
      type: MusicAlbum
      date published: 2023-06-10
    isrc code: QZNJW2368435
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T07:32:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaab6112dca47a12094c508d3ca564923bb6e9bdba0f59926e6d846ab210770fe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958846
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958846
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2368435
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T10:35:38Z
    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 0xaab6112dca47a12094c508d3ca564923bb6e9bdba0f59926e6d846ab210770fe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:38Z), 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/QZNJW2368435.
      date published: 2026-07-20T10:35:38Z
    audio: É Proibido Cochilar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.151
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.729
      additional property: Energy
        type: PropertyValue
        value: 0.662
      additional property: Speechiness
        type: PropertyValue
        value: 0.243
      additional property: Acousticness
        type: PropertyValue
        value: 0.103
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.255
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.539
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.305
      additional property: Key Name
      additional property: Mode Name
album: Se Acaso Você Chegasse Elza Soares
album: Carnaubal da Cumpade
album: Carnaúba: Árvore da Vida

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Se Acaso Você Chegasse Elza Soares
type: MusicAlbum
date published: 2024-06-22
track: Eu Fiz uma Fogueirinha / Voa Meu Balão / A Fogueira Tá Queimando
  type: MusicRecording
  duration: PT1M56S
  duration ms: 116248
  explicit: false
  by artist: Quadrilha Cumpade Elton
  in album: Se Acaso Você Chegasse Elza Soares
    type: MusicAlbum
    date published: 2024-06-22
  isrc code: QZNJX2469961
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T00:30:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd9c7db3eabdc71c6ac3a2d9083cc2e2f35939150105645ef504cc947c15c49bb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957782
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957782
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2469961
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T00:52:48Z
  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 0xd9c7db3eabdc71c6ac3a2d9083cc2e2f35939150105645ef504cc947c15c49bb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJX2469961.
    date published: 2026-07-13T00:52:48Z
  audio: Eu Fiz uma Fogueirinha / Voa Meu Balão / A Fogueira Tá Queimando
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 87.552
    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: 0.685
    additional property: Energy
      type: PropertyValue
      value: 0.873
    additional property: Speechiness
      type: PropertyValue
      value: 0.061
    additional property: Acousticness
      type: PropertyValue
      value: 0.187
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.248
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.846
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.458
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

Carnaubal da Cumpade
type: MusicAlbum
date published: 2025-06-07

Carnaúba: Árvore da Vida
type: MusicAlbum
date published: 2025-07-08