João Berna
type: MusicGroup
genre: mpb
popularity: 13
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1335cbc82f6d63bf9ff14786fdc57d5d3b9cf5bba7266b0800416f0836e9632
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/376af6a8-4627-4b8d-a7ab-495a17cab630.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/376af6a8-4627-4b8d-a7ab-495a17cab630.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/376af6a8-4627-4b8d-a7ab-495a17cab630
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe1335cbc82f6d63bf9ff14786fdc57d5d3b9cf5bba7266b0800416f0836e9632","name":"João Berna","registered_at":"2026-06-14T10:17:21Z","symbol":"NIM0421737","token_address":"0xa7f5a832afc6f588a09f1cce6a81bb61274a982c","type":"artist","uuid":"376af6a8-4627-4b8d-a7ab-495a17cab630"}
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 0xe1335cbc82f6d63bf9ff14786fdc57d5d3b9cf5bba7266b0800416f0836e9632. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/376af6a8-4627-4b8d-a7ab-495a17cab630.json and https://artists.proofprofile.net/proofs/artist/376af6a8-4627-4b8d-a7ab-495a17cab630.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:03:42Z
  text: {"copyright_id":"0xe1335cbc82f6d63bf9ff14786fdc57d5d3b9cf5bba7266b0800416f0836e9632","name":"João Berna","registered_at":"2026-06-14T10:17:21Z","symbol":"NIM0421737","token_address":"0xa7f5a832afc6f588a09f1cce6a81bb61274a982c","type":"artist","uuid":"376af6a8-4627-4b8d-a7ab-495a17cab630"}
album: PRA
  type: MusicAlbum
  date published: 2023-03-01
album: Segundo Encontro
  type: MusicAlbum
  date published: 2025-02-08
album: Se Hoje Está Tarde
  type: MusicAlbum
  date published: 2025-04-30
album: Tão Estranho
  type: MusicAlbum
  date published: 2025-08-31
  track: Tão Estranho
    type: MusicRecording
    duration: PT4M35S
    duration ms: 275412
    explicit: false
    by artist: João Berna
    in album: Tão Estranho
      type: MusicAlbum
      date published: 2025-08-31
    genre: mpb
    isrc code: BRJ692200004
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:55:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8df465c6e7d0febff4f87ea1c1eb50fb00737793ad6657e8d1aef397f26314a2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRJ692200004
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:58:47Z
    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 0x8df465c6e7d0febff4f87ea1c1eb50fb00737793ad6657e8d1aef397f26314a2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:47Z), 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/BRJ692200004.
      date published: 2026-07-16T07:58:47Z
    audio: Tão Estranho
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.985
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.521
      additional property: Energy
        type: PropertyValue
        value: 0.69
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.05
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.278
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.887
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor