Cumpade Marins
type: MusicGroup
genre: forró
popularity: 2
followers: 93
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7217fc637a123fbda5867e42e06dfa994e72c7278276b0d6fce7e77934dd8dfc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/97f14492-743d-45b2-a756-f13484dc36d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/97f14492-743d-45b2-a756-f13484dc36d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/97f14492-743d-45b2-a756-f13484dc36d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7217fc637a123fbda5867e42e06dfa994e72c7278276b0d6fce7e77934dd8dfc","name":"Cumpade Marins","registered_at":"2026-06-17T18:38:51Z","symbol":"NIM1483908","token_address":"0x92cab0f9fe0a1818d09b4c13a1cd2c69a809f078","type":"artist","uuid":"97f14492-743d-45b2-a756-f13484dc36d8"}
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 0x7217fc637a123fbda5867e42e06dfa994e72c7278276b0d6fce7e77934dd8dfc. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97f14492-743d-45b2-a756-f13484dc36d8.json and https://artists.proofprofile.net/proofs/artist/97f14492-743d-45b2-a756-f13484dc36d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x7217fc637a123fbda5867e42e06dfa994e72c7278276b0d6fce7e77934dd8dfc","name":"Cumpade Marins","registered_at":"2026-06-17T18:38:51Z","symbol":"NIM1483908","token_address":"0x92cab0f9fe0a1818d09b4c13a1cd2c69a809f078","type":"artist","uuid":"97f14492-743d-45b2-a756-f13484dc36d8"}
album: Cumpade Marins
  type: MusicAlbum
  date published: 2018-05-03
  track: Quem Ama Mulher Casada
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196608
    explicit: false
    by artist: Cumpade Marins
    in album: Cumpade Marins
      type: MusicAlbum
      date published: 2018-05-03
    genre: forró
    isrc code: QZ5AB1928437
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:51:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9e677023542cfcbb33cc1f006f2dac7ef1bc801364261a97f7ce249ed4d9e31f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958907
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958907
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1928437
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:52:49Z
    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 0x9e677023542cfcbb33cc1f006f2dac7ef1bc801364261a97f7ce249ed4d9e31f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:52:49Z), 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/QZ5AB1928437.
      date published: 2026-07-20T18:52:49Z
    audio: Quem Ama Mulher Casada
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.802
      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: 0.699
      additional property: Energy
        type: PropertyValue
        value: 0.73
      additional property: Speechiness
        type: PropertyValue
        value: 0.32
      additional property: Acousticness
        type: PropertyValue
        value: 0.715
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.198
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.841
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.862
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Bebe Vem Me Procurar
  type: MusicAlbum
  date published: 2019-02-19
album: Lua de Mel de Vaqueiro
  type: MusicAlbum
  date published: 2021-01-25
album: Cumpade Marins Abril 2023
  type: MusicAlbum
  date published: 2023-04-28
album: Tu Não Merece Eu
  type: MusicAlbum
  date published: 2024-11-15
album: Forrozão de Vaquejada
  type: MusicAlbum
  date published: 2025-06-04