Maria Helena Marins Peixoto
type: MusicGroup
popularity: 3
followers: 87
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7be0d60a5dc11e88e839c22a5f37bd3dfcda2b324a65b2c73d578ad6edec32cb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954019
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954019
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/377aa9d9-216a-4122-92f1-fce7f4a5f43f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/377aa9d9-216a-4122-92f1-fce7f4a5f43f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/377aa9d9-216a-4122-92f1-fce7f4a5f43f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:44:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7be0d60a5dc11e88e839c22a5f37bd3dfcda2b324a65b2c73d578ad6edec32cb","name":"Maria Helena Marins Peixoto","registered_at":"2026-06-16T08:54:10Z","symbol":"NIM1000945","token_address":"0xda2c9ca8239157c268081ccf8047d3408ee8cbb2","type":"artist","uuid":"377aa9d9-216a-4122-92f1-fce7f4a5f43f"}
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 0x7be0d60a5dc11e88e839c22a5f37bd3dfcda2b324a65b2c73d578ad6edec32cb. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/377aa9d9-216a-4122-92f1-fce7f4a5f43f.json and https://artists.proofprofile.net/proofs/artist/377aa9d9-216a-4122-92f1-fce7f4a5f43f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:44:13Z
  text: {"copyright_id":"0x7be0d60a5dc11e88e839c22a5f37bd3dfcda2b324a65b2c73d578ad6edec32cb","name":"Maria Helena Marins Peixoto","registered_at":"2026-06-16T08:54:10Z","symbol":"NIM1000945","token_address":"0xda2c9ca8239157c268081ccf8047d3408ee8cbb2","type":"artist","uuid":"377aa9d9-216a-4122-92f1-fce7f4a5f43f"}
album: Mundo Nosso - Música de Harmonia e Conexão do Ser Humano com a Natureza Marítima
  type: MusicAlbum
  date published: 2019-07-23
album: Sonhando com o Mar: Relaxar com As Gaivotas e os Sons do Fundo do Oceano, Baleias e Golfinhos
  type: MusicAlbum
  date published: 2020-01-09
  track: Som do Mar
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204806
    explicit: false
    by artist: Maria Helena Marins Peixoto
    in album: Sonhando com o Mar: Relaxar com As Gaivotas e os Sons do Fundo do Oceano, Baleias e Golfinhos
      type: MusicAlbum
      date published: 2020-01-09
    isrc code: ITO101981535
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:40:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x00cfc5ddf4c33d8e01644e9421429c30e13562d7227cab123cd60025070597a5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO101981535
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:49:15Z
    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 0x00cfc5ddf4c33d8e01644e9421429c30e13562d7227cab123cd60025070597a5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ITO101981535.
      date published: 2026-07-20T02:49:15Z
    audio: Som do Mar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 54.806
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.234
      additional property: Energy
        type: PropertyValue
        value: 0.09
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.714
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.846
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.112
      additional property: Loudness (dB)
        type: PropertyValue
        value: -28.779
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major