Joāo Carlos
type: MusicGroup
popularity: 3
followers: 169
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc99e19f90c4e1cd023791b1a46519cfb9489f1445be8de016c0d69c4a8d13dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0755a72-1b49-4f42-a10f-fa2808342569.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0755a72-1b49-4f42-a10f-fa2808342569.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f0755a72-1b49-4f42-a10f-fa2808342569
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcc99e19f90c4e1cd023791b1a46519cfb9489f1445be8de016c0d69c4a8d13dc","name":"Joāo Carlos","registered_at":"2026-06-21T13:04:52Z","symbol":"NIM1926842","token_address":"0x25876ed10cbdc27b14a0bf25a6b34f5673e5c96e","type":"artist","uuid":"f0755a72-1b49-4f42-a10f-fa2808342569"}
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 0xcc99e19f90c4e1cd023791b1a46519cfb9489f1445be8de016c0d69c4a8d13dc. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0755a72-1b49-4f42-a10f-fa2808342569.json and https://artists.proofprofile.net/proofs/artist/f0755a72-1b49-4f42-a10f-fa2808342569.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xcc99e19f90c4e1cd023791b1a46519cfb9489f1445be8de016c0d69c4a8d13dc","name":"Joāo Carlos","registered_at":"2026-06-21T13:04:52Z","symbol":"NIM1926842","token_address":"0x25876ed10cbdc27b14a0bf25a6b34f5673e5c96e","type":"artist","uuid":"f0755a72-1b49-4f42-a10f-fa2808342569"}
album: Regresso
  type: MusicAlbum
  date published: 1986-07-01
album: Musica De Baile
  type: MusicAlbum
  date published: 1986-09-01
album: Sobe O Vento
  type: MusicAlbum
  date published: 1989
album: Léninhas
  type: MusicAlbum
  date published: 1989-01-01
album: 13 Setembro
  type: MusicAlbum
  date published: 1989-08-01
album: 13 Setembro
  type: MusicAlbum
  date published: 1989-08-01
album: Nazaré Dos Pescadores
  type: MusicAlbum
  date published: 1995-07-01
album: Encontro Com O Amor
  type: MusicAlbum
  date published: 1999-01-07
album: Paraíso das Acácias: Luz & Trevas
  type: MusicAlbum
  date published: 2016-05-13
album: Filho do Sertão
  type: MusicAlbum
  date published: 2017-04-12
album: Sentidos
  type: MusicAlbum
  date published: 2018-08-15
album: Sentidos
  type: MusicAlbum
  date published: 2018-08-15
album: Autoral
  type: MusicAlbum
  date published: 2020-03-02
album: Grito Contido
  type: MusicAlbum
  date published: 2021-07-31
track: Grades do Coração

Grades do Coração
type: MusicRecording
duration: PT3M18S
duration ms: 198487
explicit: false
by artist: Xande de Pilares
by artist: Mauro Jr.
by artist: Joāo Carlos
by artist: João Carlos Filho
by artist: Mauro Jr / Xande de Pilares
by artist: Orquestra Petrobras Sinfônica
by artist: Isaac Karabtchevsky
in album: O Clássico é Samba
  type: MusicAlbum
  date published: 2017-03-24
isrc code: BRDEP1700089
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:41:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91f11ee3054799188ee46833a0afc2ce6f08913dbf7325d55c45c09fecfdc693
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRDEP1700089
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f11ee3054799188ee46833a0afc2ce6f08913dbf7325d55c45c09fecfdc693. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRDEP1700089.
  date published: 2026-07-08T03:22:41Z
audio: Grades do Coração
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.988
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.378
  additional property: Energy
    type: PropertyValue
    value: 0.365
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.206
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.703
  additional property: Liveness
    type: PropertyValue
    value: 0.349
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.626
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.038
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major