João Roberto Kelly
type: MusicGroup
genre: brazilian jazz
popularity: 3
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0819e94fdfd779d3a90b400e0b7a0087e1b59123d9b5cd55334838f3fe4d0c0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab1dbd77-3363-41d9-b99f-950e1faab083.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab1dbd77-3363-41d9-b99f-950e1faab083.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab1dbd77-3363-41d9-b99f-950e1faab083
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc0819e94fdfd779d3a90b400e0b7a0087e1b59123d9b5cd55334838f3fe4d0c0","name":"João Roberto Kelly","registered_at":"2026-06-20T09:50:32Z","symbol":"NIM1584006","token_address":"0x98a10db8510d0969e41b6e379f4095daabd85f04","type":"artist","uuid":"ab1dbd77-3363-41d9-b99f-950e1faab083"}
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 0xc0819e94fdfd779d3a90b400e0b7a0087e1b59123d9b5cd55334838f3fe4d0c0. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1dbd77-3363-41d9-b99f-950e1faab083.json and https://artists.proofprofile.net/proofs/artist/ab1dbd77-3363-41d9-b99f-950e1faab083.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xc0819e94fdfd779d3a90b400e0b7a0087e1b59123d9b5cd55334838f3fe4d0c0","name":"João Roberto Kelly","registered_at":"2026-06-20T09:50:32Z","symbol":"NIM1584006","token_address":"0x98a10db8510d0969e41b6e379f4095daabd85f04","type":"artist","uuid":"ab1dbd77-3363-41d9-b99f-950e1faab083"}
album: Joao Roberto Kelly (Mr Bongo Presents Rozenblit)
  type: MusicAlbum
  date published: 1965
album: A Noivinha da Pavuna - Teimosia (Compacto)
  type: MusicAlbum
  date published: 1968-10-17
album: Festa na Paróquia
  type: MusicAlbum
  date published: 1970-08-11
album: Um Piano Sobe O Morro
  type: MusicAlbum
  date published: 1973-01-15
album: João Roberto Kelly
  type: MusicAlbum
  date published: 1974-01-02
album: João Roberto Kelly
  type: MusicAlbum
  date published: 1980-01-02
album: Happy Hour ao Piano Com João Roberto Kelly
  type: MusicAlbum
  date published: 1994-04-30
album: Happy Hour ao Piano Com João Roberto Kelly
  type: MusicAlbum
  date published: 1994-04-30
album: Happy Hour ao Piano
  type: MusicAlbum
  date published: 1994-04-30
album: Marchinha para o Mister
  type: MusicAlbum
  date published: 2010
album: O Pinheirinho / Mariazinha (Deluxe Version)
  type: MusicAlbum
  date published: 2018-03-16
album: Samba a Quatro Mãos
  type: MusicAlbum
  date published: 2022-10-19
track: Rancho da Praça Onze
  type: MusicRecording
  duration: PT2M9S
  duration ms: 129158
  explicit: false
  by artist: João Roberto Kelly
  by artist: Chico Anízio
  in album: Marchinhas de Carnaval Vol 7
    type: MusicAlbum
    date published: 2011-08-30
  isrc code: USESK0618273
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T10:47:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x285bbd63f1f27836f3e3acb7565eefe294d2cc3d77e6d33bf957a3a261e8d732
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USESK0618273
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  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 0x285bbd63f1f27836f3e3acb7565eefe294d2cc3d77e6d33bf957a3a261e8d732. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USESK0618273.
    date published: 2026-07-31T12:24:41Z
  audio: Rancho da Praça Onze
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 161.895
    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: 0.377
    additional property: Energy
      type: PropertyValue
      value: 0.416
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.087
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.277
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.575
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.831
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major