Sérgio Carvalho
type: MusicGroup
genre: brazilian jazz
popularity: 3
followers: 590
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x04e739d07f43957ee23816a5ce3bf53bfa14b97997147f091b52807803300c4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/113bb8e8-5dcf-4c7a-a6c4-1c2769064c84.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/113bb8e8-5dcf-4c7a-a6c4-1c2769064c84.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/113bb8e8-5dcf-4c7a-a6c4-1c2769064c84
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04e739d07f43957ee23816a5ce3bf53bfa14b97997147f091b52807803300c4f","name":"Sérgio Carvalho","registered_at":"2026-06-15T19:29:21Z","symbol":"NIM0808811","token_address":"0x7694e83c1102eb05a3305158f66d8a74bee6041f","type":"artist","uuid":"113bb8e8-5dcf-4c7a-a6c4-1c2769064c84"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e739d07f43957ee23816a5ce3bf53bfa14b97997147f091b52807803300c4f. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/113bb8e8-5dcf-4c7a-a6c4-1c2769064c84.json and https://artists.proofprofile.net/proofs/artist/113bb8e8-5dcf-4c7a-a6c4-1c2769064c84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x04e739d07f43957ee23816a5ce3bf53bfa14b97997147f091b52807803300c4f","name":"Sérgio Carvalho","registered_at":"2026-06-15T19:29:21Z","symbol":"NIM0808811","token_address":"0x7694e83c1102eb05a3305158f66d8a74bee6041f","type":"artist","uuid":"113bb8e8-5dcf-4c7a-a6c4-1c2769064c84"}
album: Rebento
  type: MusicAlbum
  date published: 2013-12-01
album: Sérgio Carvalho
  type: MusicAlbum
  date published: 2014-11-01
track: Carnaval Triste
  type: MusicRecording
  duration: PT2M14S
  duration ms: 134453
  explicit: false
  by artist: Sérgio Carvalho
  by artist: Paulo Bruce
  in album: Samba Nova Concepção
    type: MusicAlbum
    date published: 2007-01-01
  isrc code: BRAPI0701555
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T06:34:39+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2a39d6801e5cd8c68461867c7f22d3e648febfe65331c513e33e883af0bc4afe
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 960360
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960360
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAPI0701555
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T06:42:11Z
  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 0x2a39d6801e5cd8c68461867c7f22d3e648febfe65331c513e33e883af0bc4afe. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRAPI0701555.
    date published: 2026-07-31T06:42:11Z
  audio: Carnaval Triste
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 155.922
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.545
    additional property: Energy
      type: PropertyValue
      value: 0.701
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.478
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.237
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.964
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.199
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor