A Rainha De Cantigas De Roda
type: MusicGroup
popularity: 33
followers: 1210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc6e0cbac8b1dd108b57ead37eefe3770055856d687791a77e918d5c47726b2ef
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/033e6550-5b17-4fa5-924c-0f7084e00f76.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/033e6550-5b17-4fa5-924c-0f7084e00f76.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6e0cbac8b1dd108b57ead37eefe3770055856d687791a77e918d5c47726b2ef","name":"A Rainha De Cantigas De Roda","registered_at":"2026-06-11T10:50:30Z","symbol":"NIM0004728","token_address":"0x3da95bde749a91f694fdb7f6ed7bf25189a802d0","type":"artist","uuid":"033e6550-5b17-4fa5-924c-0f7084e00f76"}
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 0xc6e0cbac8b1dd108b57ead37eefe3770055856d687791a77e918d5c47726b2ef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/033e6550-5b17-4fa5-924c-0f7084e00f76.json and https://artists.proofprofile.net/proofs/artist/033e6550-5b17-4fa5-924c-0f7084e00f76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xc6e0cbac8b1dd108b57ead37eefe3770055856d687791a77e918d5c47726b2ef","name":"A Rainha De Cantigas De Roda","registered_at":"2026-06-11T10:50:30Z","symbol":"NIM0004728","token_address":"0x3da95bde749a91f694fdb7f6ed7bf25189a802d0","type":"artist","uuid":"033e6550-5b17-4fa5-924c-0f7084e00f76"}
album: Música Infantil Portuguesa
  type: MusicAlbum
  date published: 2018-01-01
  track: O Sapo Não Lava o Pé
    type: MusicRecording
    duration: PT1M21S
    duration ms: 81608
    explicit: false
    by artist: A Rainha De Cantigas De Roda
    in album: Música Infantil Portuguesa
      type: MusicAlbum
      date published: 2018-01-01
    isrc code: TCADK1892250
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSBitcoinBlockVerifyURL
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      value: https://blockstream.info/api/block-height/958765
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADK1892250
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T18:01:47Z
    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 0xc67977f6dc17d496a51bee84498516b0de3a02af5b6474fb3aeb7bb083e7cbd4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCADK1892250.
      date published: 2026-07-19T18:01:47Z
    audio: O Sapo Não Lava o Pé
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.077
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.942
      additional property: Energy
        type: PropertyValue
        value: 0.343
      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.123
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.883
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.099
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major