Márcia Fernanda
type: MusicGroup
popularity: 3
followers: 122
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6037367bd73bbb2e52957d3e15c6e8c1bc3e187f78f526825959f1c96cdcb4e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09a7d131-999f-4bea-83ea-51b224b733f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09a7d131-999f-4bea-83ea-51b224b733f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/09a7d131-999f-4bea-83ea-51b224b733f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6037367bd73bbb2e52957d3e15c6e8c1bc3e187f78f526825959f1c96cdcb4e1","name":"Márcia Fernanda","registered_at":"2026-06-15T16:57:32Z","symbol":"NIM0772585","token_address":"0x1ed758308e6218ff12b3e8da3d50692f6e13a9db","type":"artist","uuid":"09a7d131-999f-4bea-83ea-51b224b733f0"}
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 0x6037367bd73bbb2e52957d3e15c6e8c1bc3e187f78f526825959f1c96cdcb4e1. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09a7d131-999f-4bea-83ea-51b224b733f0.json and https://artists.proofprofile.net/proofs/artist/09a7d131-999f-4bea-83ea-51b224b733f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:57:35Z
  text: {"copyright_id":"0x6037367bd73bbb2e52957d3e15c6e8c1bc3e187f78f526825959f1c96cdcb4e1","name":"Márcia Fernanda","registered_at":"2026-06-15T16:57:32Z","symbol":"NIM0772585","token_address":"0x1ed758308e6218ff12b3e8da3d50692f6e13a9db","type":"artist","uuid":"09a7d131-999f-4bea-83ea-51b224b733f0"}
album: Escolha Errada
  type: MusicAlbum
  date published: 2020-04-20
album: Positivo pra Você
  type: MusicAlbum
  date published: 2021-05-17
album: Amorzin de Emergência
  type: MusicAlbum
  date published: 2022-05-06
album: Love Reverse
  type: MusicAlbum
  date published: 2023-05-31
album: Melhor o Fim
  type: MusicAlbum
  date published: 2024-12-12
  track: Melhor o Fim
    type: MusicRecording
    duration: PT2M46S
    duration ms: 166695
    explicit: false
    by artist: Márcia Fernanda
    in album: Melhor o Fim
      type: MusicAlbum
      date published: 2024-12-12
    isrc code: BC0CF2400001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T00:32:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd524a43357afe77bfd644499d6c7121f96bfa32854f21c2d76853ff91bf56cca
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958473
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958473
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC0CF2400001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:52:36Z
    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 0xd524a43357afe77bfd644499d6c7121f96bfa32854f21c2d76853ff91bf56cca. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BC0CF2400001.
      date published: 2026-07-18T00:52:36Z
    audio: Melhor o Fim
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.085
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.656
      additional property: Energy
        type: PropertyValue
        value: 0.897
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.53
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.322
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.937
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.304
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Forró Que o Tempo Não Apaga
  type: MusicAlbum
  date published: 2025-06-24