César Nascimento
type: MusicGroup
genre: roots reggae
popularity: 11
followers: 1337
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba2f4617cd7898f266f13737393fc6cd9724f3a8b51298bb846cf3a6e07e752e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953758
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953758
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b10772ec-99a9-4a4d-8d76-d617cd0ea54a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b10772ec-99a9-4a4d-8d76-d617cd0ea54a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b10772ec-99a9-4a4d-8d76-d617cd0ea54a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba2f4617cd7898f266f13737393fc6cd9724f3a8b51298bb846cf3a6e07e752e","name":"César Nascimento","registered_at":"2026-06-14T23:07:28Z","symbol":"NIM0605443","token_address":"0xfbff6212b79270dd069798a0cdeb33e9734e9592","type":"artist","uuid":"b10772ec-99a9-4a4d-8d76-d617cd0ea54a"}
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 0xba2f4617cd7898f266f13737393fc6cd9724f3a8b51298bb846cf3a6e07e752e. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b10772ec-99a9-4a4d-8d76-d617cd0ea54a.json and https://artists.proofprofile.net/proofs/artist/b10772ec-99a9-4a4d-8d76-d617cd0ea54a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T07:48:25Z
  text: {"copyright_id":"0xba2f4617cd7898f266f13737393fc6cd9724f3a8b51298bb846cf3a6e07e752e","name":"César Nascimento","registered_at":"2026-06-14T23:07:28Z","symbol":"NIM0605443","token_address":"0xfbff6212b79270dd069798a0cdeb33e9734e9592","type":"artist","uuid":"b10772ec-99a9-4a4d-8d76-d617cd0ea54a"}
album: Ilha Magnética
  type: MusicAlbum
  date published: 1989-02-15
  track: Ilha Magnética
    type: MusicRecording
    duration: PT3M39S
    duration ms: 219560
    explicit: false
    by artist: César Nascimento
    in album: Ilha Magnética
      type: MusicAlbum
      date published: 1989-02-15
    genre: roots reggae
    isrc code: QZ5AB1993832
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:41:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x16adc46da7776df43ca5652e6d71bb7dfc9c0b652cdbb8cc29dc702a69dfead3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1993832
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x16adc46da7776df43ca5652e6d71bb7dfc9c0b652cdbb8cc29dc702a69dfead3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1993832 — a six-check JSON result.
      date published: 2026-07-04T10:04:33Z
    audio: Ilha Magnética
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.262
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.535
      additional property: Energy
        type: PropertyValue
        value: 0.442
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.651
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.492
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.632
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.664
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Maguinha do Sá Viana
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238146
    explicit: false
    by artist: César Nascimento
    in album: Ilha Magnética
      type: MusicAlbum
      date published: 1989-02-15
    genre: roots reggae
    isrc code: QZ5AB1993843
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T23:42:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9ba8511fa1b10c08403edd445f492ed6b337c8a80ec4b9fad7ac6d410a08648e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1993843
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x9ba8511fa1b10c08403edd445f492ed6b337c8a80ec4b9fad7ac6d410a08648e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1993843 — a six-check JSON result.
      date published: 2026-07-02T16:51:38Z
    audio: Maguinha do Sá Viana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.16
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.77
      additional property: Energy
        type: PropertyValue
        value: 0.474
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.176
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.768
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.468
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Internetion@l
album: Ilha de Fé
album: Três Potes
album: Epedra
album: É Pra São João!
album: Vem, Maninha!
album: Desterro
album: Fofinho
album: Vem, Maninha
album: Além da Fronteira
album: A Serpente Tá Quietinha
album: Luz do Cometa
album: Ia Ia

Loudness (dB)
type: PropertyValue
value: -8.979

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Internetion@l
type: MusicAlbum
date published: 1997-09-01
track: O Radinho
  type: MusicRecording
  duration: PT4M44S
  duration ms: 284666
  explicit: false
  by artist: César Nascimento
  in album: Internetion@l
    type: MusicAlbum
    date published: 1997-09-01
  genre: roots reggae
  isrc code: BRAPI0001195
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T14:54:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6a752790d3c8d405bf9ced92e8ea28f0d320f52a862ed0eb1e37628676ab4dc7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958428
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958428
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAPI0001195
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T15:15:14Z
  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 0x6a752790d3c8d405bf9ced92e8ea28f0d320f52a862ed0eb1e37628676ab4dc7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAPI0001195 — a six-check JSON result.
    date published: 2026-07-17T15:15:14Z
  audio: O Radinho
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 86.917
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.9
    additional property: Energy
      type: PropertyValue
      value: 0.813
    additional property: Speechiness
      type: PropertyValue
      value: 0.11
    additional property: Acousticness
      type: PropertyValue
      value: 0.059
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.069
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.857
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.061
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Ilha de Fé
type: MusicAlbum
date published: 2019-07-08

Três Potes
type: MusicAlbum
date published: 2022-02-17

Epedra
type: MusicAlbum
date published: 2023-01-25

É Pra São João!
type: MusicAlbum
date published: 2023-06-01

Vem, Maninha!
type: MusicAlbum
date published: 2023-09-03

Desterro
type: MusicAlbum
date published: 2023-10-17

Fofinho
type: MusicAlbum
date published: 2024-01-14

Vem, Maninha
type: MusicAlbum
date published: 2024-05-18

Além da Fronteira
type: MusicAlbum
date published: 2025-02-07

A Serpente Tá Quietinha
type: MusicAlbum
date published: 2025-02-09

Luz do Cometa
type: MusicAlbum
date published: 2025-06-08

Ia Ia
type: MusicAlbum
date published: 2025-10-12