Constança Quinteiro
type: MusicGroup
popularity: 10
followers: 430
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce456c91efbfb5d33de969751398148cb9bdae01129388edab86057424d842ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ef5b91c3-2d38-4de9-a39c-b9c95ad6e776.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ef5b91c3-2d38-4de9-a39c-b9c95ad6e776.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ef5b91c3-2d38-4de9-a39c-b9c95ad6e776
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce456c91efbfb5d33de969751398148cb9bdae01129388edab86057424d842ff","name":"Constança Quinteiro","registered_at":"2026-06-21T12:30:04Z","symbol":"NIM1923683","token_address":"0x1894595953b0cf0afa9dbbec415318f100240038","type":"artist","uuid":"ef5b91c3-2d38-4de9-a39c-b9c95ad6e776"}
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 0xce456c91efbfb5d33de969751398148cb9bdae01129388edab86057424d842ff. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef5b91c3-2d38-4de9-a39c-b9c95ad6e776.json and https://artists.proofprofile.net/proofs/artist/ef5b91c3-2d38-4de9-a39c-b9c95ad6e776.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xce456c91efbfb5d33de969751398148cb9bdae01129388edab86057424d842ff","name":"Constança Quinteiro","registered_at":"2026-06-21T12:30:04Z","symbol":"NIM1923683","token_address":"0x1894595953b0cf0afa9dbbec415318f100240038","type":"artist","uuid":"ef5b91c3-2d38-4de9-a39c-b9c95ad6e776"}
album: Miúda
  type: MusicAlbum
  date published: 2021-02-05
album: Miúda
  type: MusicAlbum
  date published: 2021-02-05
album: Miúda
  type: MusicAlbum
  date published: 2021-02-05
album: Corpo a Corpo
  type: MusicAlbum
  date published: 2021-06-25
album: Corpo a Corpo
  type: MusicAlbum
  date published: 2021-06-25
album: Aventurina
  type: MusicAlbum
  date published: 2021-10-15
album: Aventurina
  type: MusicAlbum
  date published: 2021-10-15
album: Conta-me
  type: MusicAlbum
  date published: 2022-07-01
  track: Conta-me
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217950
    explicit: false
    by artist: Constança Quinteiro
    in album: Conta-me
      type: MusicAlbum
      date published: 2022-07-01
    isrc code: QZTBD2320586
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T12:27:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc93f196b3423836c361048fd23525e72a7130e4d37d813894bffd2beda875a0b
    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/QZTBD2320586
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T15:29:28Z
    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 0xc93f196b3423836c361048fd23525e72a7130e4d37d813894bffd2beda875a0b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:29:28Z), 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/QZTBD2320586.
      date published: 2026-07-21T15:29:28Z
    audio: Conta-me
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.081
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.734
      additional property: Energy
        type: PropertyValue
        value: 0.593
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.475
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.331
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.615
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.011
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Conta-me
  type: MusicAlbum
  date published: 2022-07-01