Ilda de Castro
type: MusicGroup
genre: fado
popularity: 10
followers: 560
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6bb235e0558a0d993c927f05023eb164e4cbbb273750e6f873752534379c158c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26bd0d5e-7578-4b3a-bb08-761475fbf98e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26bd0d5e-7578-4b3a-bb08-761475fbf98e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/26bd0d5e-7578-4b3a-bb08-761475fbf98e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6bb235e0558a0d993c927f05023eb164e4cbbb273750e6f873752534379c158c","name":"Ilda de Castro","registered_at":"2026-06-16T03:02:04Z","symbol":"NIM0916860","token_address":"0x6034b40da65df18e05baf5f352949f006fce66e0","type":"artist","uuid":"26bd0d5e-7578-4b3a-bb08-761475fbf98e"}
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 0x6bb235e0558a0d993c927f05023eb164e4cbbb273750e6f873752534379c158c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26bd0d5e-7578-4b3a-bb08-761475fbf98e.json and https://artists.proofprofile.net/proofs/artist/26bd0d5e-7578-4b3a-bb08-761475fbf98e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x6bb235e0558a0d993c927f05023eb164e4cbbb273750e6f873752534379c158c","name":"Ilda de Castro","registered_at":"2026-06-16T03:02:04Z","symbol":"NIM0916860","token_address":"0x6034b40da65df18e05baf5f352949f006fce66e0","type":"artist","uuid":"26bd0d5e-7578-4b3a-bb08-761475fbf98e"}
album: A Saudade Que Canta
  type: MusicAlbum
  date published: 1968-02-15
album: A pomba da Rosinha
  type: MusicAlbum
  date published: 1986-06-06
album: Bom Dia
  type: MusicAlbum
  date published: 1991
  track: Bom-Dia, Bom-Dia
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201493
    explicit: false
    by artist: Ilda de Castro
    in album: Bom Dia
      type: MusicAlbum
      date published: 1991
    genre: fado
    isrc code: PTES19100402
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T12:06:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb5b369ba4814e8280edbffd60919836c1d8e4f6a42f4752dc96742aeb99359d1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTES19100402
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xb5b369ba4814e8280edbffd60919836c1d8e4f6a42f4752dc96742aeb99359d1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PTES19100402.
      date published: 2026-07-05T01:12:41Z
    audio: Bom-Dia, Bom-Dia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.304
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.639
      additional property: Energy
        type: PropertyValue
        value: 0.682
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.382
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.268
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.813
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.442
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Bom Dia
  type: MusicAlbum
  date published: 1991-09-06
album: Sucessos de Ouro Mix
  type: MusicAlbum
  date published: 1993-11-08
album: Lisboa É Portuguesa
  type: MusicAlbum
  date published: 1994
album: Amor Voltei
  type: MusicAlbum
  date published: 1995-09-04
album: Cinco Sentidos
  type: MusicAlbum
  date published: 1998-07-15
album: Ilda De Castro É Meu Nome
  type: MusicAlbum
  date published: 2004-04-05
album: Fados (A Saudade Que Canta)
  type: MusicAlbum
  date published: 2013
album: Fados: A Saudade Que Canta
  type: MusicAlbum
  date published: 2013
album: A Vida É Feita de Tudo
  type: MusicAlbum
  date published: 2014-12-10
album: Palavras Simples
  type: MusicAlbum
  date published: 2014-12-10
album: A Vida É Feita de Tudo
  type: MusicAlbum
  date published: 2014-12-10
album: Doce Pecado
  type: MusicAlbum
  date published: 2014-12-10
album: Eu Canto à Vida
  type: MusicAlbum
  date published: 2014-12-18
album: Tudo por Amor
  type: MusicAlbum
  date published: 2015-05-11