Mariângela Zan
type: MusicGroup
popularity: 4
followers: 550
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb69b98bf449977b49d9ae880aa77217d445fd7d1881a819370b5c949275508db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aef546fd-fc27-419c-b797-cb7ada081129.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aef546fd-fc27-419c-b797-cb7ada081129.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aef546fd-fc27-419c-b797-cb7ada081129
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb69b98bf449977b49d9ae880aa77217d445fd7d1881a819370b5c949275508db","name":"Mariângela Zan","registered_at":"2026-06-20T10:51:43Z","symbol":"NIM1598977","token_address":"0x072ffb0e683989bfde062a5d41444ad376a68b00","type":"artist","uuid":"aef546fd-fc27-419c-b797-cb7ada081129"}
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 0xb69b98bf449977b49d9ae880aa77217d445fd7d1881a819370b5c949275508db. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aef546fd-fc27-419c-b797-cb7ada081129.json and https://artists.proofprofile.net/proofs/artist/aef546fd-fc27-419c-b797-cb7ada081129.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xb69b98bf449977b49d9ae880aa77217d445fd7d1881a819370b5c949275508db","name":"Mariângela Zan","registered_at":"2026-06-20T10:51:43Z","symbol":"NIM1598977","token_address":"0x072ffb0e683989bfde062a5d41444ad376a68b00","type":"artist","uuid":"aef546fd-fc27-419c-b797-cb7ada081129"}
album: Homenagem a Mário Zan
  type: MusicAlbum
  date published: 2013-10-01
album: Uma Homenagem a Mário Zan
  type: MusicAlbum
  date published: 2016-12-05
album: Agenda Rabiscada
  type: MusicAlbum
  date published: 2018-11-23
album: Santa Maria de la Mer (Santa Maria do Brasil)
  type: MusicAlbum
  date published: 2019-02-15
album: Clássicos
  type: MusicAlbum
  date published: 2019-03-29
  track: Santa Maria do Brasil
    type: MusicRecording
    duration: PT3M32S
    duration ms: 212222
    explicit: false
    by artist: Mariângela Zan
    in album: Clássicos
      type: MusicAlbum
      date published: 2019-03-29
    isrc code: BRAPI1900016
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T12:07:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1036736c9759f73c832cc1180c7934ca142cd4c3eb6af1a2159754d282d11a30
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959008
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959008
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRAPI1900016
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:14:05Z
    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 0x1036736c9759f73c832cc1180c7934ca142cd4c3eb6af1a2159754d282d11a30. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BRAPI1900016.
      date published: 2026-07-21T13:14:05Z
    audio: Santa Maria do Brasil
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.003
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.681
      additional property: Energy
        type: PropertyValue
        value: 0.574
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.45
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.327
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.684
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.533
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Aparecida Sertaneja – Músicas Juninas
  type: MusicAlbum
  date published: 2024-06-03