Grupo Cambona
type: MusicGroup
popularity: 6
followers: 76
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4d3e0c7cdac3187ccb1190f2423dd82a5a8be1010327976b4a1b8335f94d593
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1885846-f04a-4db4-b6f9-e1afa19ed0db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1885846-f04a-4db4-b6f9-e1afa19ed0db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d1885846-f04a-4db4-b6f9-e1afa19ed0db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa4d3e0c7cdac3187ccb1190f2423dd82a5a8be1010327976b4a1b8335f94d593","name":"Grupo Cambona","registered_at":"2026-06-21T01:32:10Z","symbol":"NIM1777846","token_address":"0x24f138efc2d8421c17887cac2416a27c01eddc4e","type":"artist","uuid":"d1885846-f04a-4db4-b6f9-e1afa19ed0db"}
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 0xa4d3e0c7cdac3187ccb1190f2423dd82a5a8be1010327976b4a1b8335f94d593. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1885846-f04a-4db4-b6f9-e1afa19ed0db.json and https://artists.proofprofile.net/proofs/artist/d1885846-f04a-4db4-b6f9-e1afa19ed0db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa4d3e0c7cdac3187ccb1190f2423dd82a5a8be1010327976b4a1b8335f94d593","name":"Grupo Cambona","registered_at":"2026-06-21T01:32:10Z","symbol":"NIM1777846","token_address":"0x24f138efc2d8421c17887cac2416a27c01eddc4e","type":"artist","uuid":"d1885846-f04a-4db4-b6f9-e1afa19ed0db"}
album: Dançador por Vocação
  type: MusicAlbum
  date published: 2015
album: Ao Vivo em Estância Velha
  type: MusicAlbum
  date published: 2017-04-03
album: Yasmin
  type: MusicAlbum
  date published: 2022-05-15
album: Grudado Num Vanerão, Vol. 1
  type: MusicAlbum
  date published: 2022-06-16
album: Grudado Num Vanerão Vol.2
  type: MusicAlbum
  date published: 2022-06-17
album: O Dono do Ursinho
  type: MusicAlbum
  date published: 2022-11-10
  track: O Dono do Ursinho
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222095
    explicit: false
    by artist: Grupo Cambona
    in album: O Dono do Ursinho
      type: MusicAlbum
      date published: 2022-11-10
    isrc code: QZW9L2279574
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-25T00:30:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6c38b0d1a8f751f22ed637159194c6c60267a2e95e9053fb3dedf3430378cf68
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2279574
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x6c38b0d1a8f751f22ed637159194c6c60267a2e95e9053fb3dedf3430378cf68. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2279574.
      date published: 2026-07-02T03:55:08Z
    audio: O Dono do Ursinho
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.253
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.682
      additional property: Energy
        type: PropertyValue
        value: 0.901
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.504
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.7
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.302
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Eu Vou Voltar
  type: MusicAlbum
  date published: 2025-06-17
  track: Eu Vou Voltar
    type: MusicRecording
    duration: PT3M15S
    duration ms: 195663
    explicit: false
    by artist: Grupo Cambona
    in album: Eu Vou Voltar
      type: MusicAlbum
      date published: 2025-06-17
    isrc code: QZNJX2522948
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T14:15:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8bc8d97800edfa403f3ceb509117a41814c2e617801b614e24198a5e4f2ac8f9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959144
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959144
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2522948
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T15:38:35Z
    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 0x8bc8d97800edfa403f3ceb509117a41814c2e617801b614e24198a5e4f2ac8f9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNJX2522948.
      date published: 2026-07-22T15:38:35Z
    audio: Eu Vou Voltar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.987
      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: 0.783
      additional property: Energy
        type: PropertyValue
        value: 0.587
      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: Cadeado

Speechiness
type: PropertyValue
value: 0.285

Acousticness
type: PropertyValue
value: 0.155

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.104

Valence (Positivity)
type: PropertyValue
value: 0.926

Loudness (dB)
type: PropertyValue
value: -8.868

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Eu Vou Voltar
type: MusicAlbum
date published: 2025-06-19

Cadeado
type: MusicAlbum
date published: 2025-08-10
track: Cadeado
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200804
  explicit: false
  by artist: Grupo Cambona
  in album: Cadeado
    type: MusicAlbum
    date published: 2025-08-10
  isrc code: QZNJY2522112
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T14:13:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa19abd3ee34dad8727cd649e665f084e6ef7efe77b9204decbc4d5da7bd77a79
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958163
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958163
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2522112
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T14:38:07Z
  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 0xa19abd3ee34dad8727cd649e665f084e6ef7efe77b9204decbc4d5da7bd77a79. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJY2522112.
    date published: 2026-07-15T14:38:07Z
  audio: Cadeado
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.083
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.704
    additional property: Energy
      type: PropertyValue
      value: 0.7
    additional property: Speechiness
      type: PropertyValue
      value: 0.152
    additional property: Acousticness
      type: PropertyValue
      value: 0.511
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.109
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.847
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.896
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor