Tuna Académica De Lisboa
type: MusicGroup
genre: fado
popularity: 7
followers: 522
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32a273a521950d40e9eaf256e32b85f2618ee100a90dab74eb79d81e6da6003b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f45e9e85-2cef-4b41-b47c-9cc07f1032e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f45e9e85-2cef-4b41-b47c-9cc07f1032e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f45e9e85-2cef-4b41-b47c-9cc07f1032e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x32a273a521950d40e9eaf256e32b85f2618ee100a90dab74eb79d81e6da6003b","name":"Tuna Académica De Lisboa","registered_at":"2026-06-21T14:16:16Z","symbol":"NIM1944331","token_address":"0xa58a322ba016cf6fe101368a703a6aee7fdb87da","type":"artist","uuid":"f45e9e85-2cef-4b41-b47c-9cc07f1032e9"}
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 0x32a273a521950d40e9eaf256e32b85f2618ee100a90dab74eb79d81e6da6003b. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f45e9e85-2cef-4b41-b47c-9cc07f1032e9.json and https://artists.proofprofile.net/proofs/artist/f45e9e85-2cef-4b41-b47c-9cc07f1032e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x32a273a521950d40e9eaf256e32b85f2618ee100a90dab74eb79d81e6da6003b","name":"Tuna Académica De Lisboa","registered_at":"2026-06-21T14:16:16Z","symbol":"NIM1944331","token_address":"0xa58a322ba016cf6fe101368a703a6aee7fdb87da","type":"artist","uuid":"f45e9e85-2cef-4b41-b47c-9cc07f1032e9"}
album: Contramão
  type: MusicAlbum
  date published: 2005-06-01
  track: Flor sem Tempo
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220238
    explicit: false
    by artist: Tuna Académica De Lisboa
    in album: Contramão
      type: MusicAlbum
      date published: 2005-06-01
    genre: fado
    isrc code: QZNWS2080497
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T19:31:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0ae5349c9919a36e303d89af94816bed26e270e87a1708b21dd6991f820f2e9e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958774
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958774
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2080497
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T20:03:27Z
    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 0x0ae5349c9919a36e303d89af94816bed26e270e87a1708b21dd6991f820f2e9e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZNWS2080497.
      date published: 2026-07-19T20:03:27Z
    audio: Flor sem Tempo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.904
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.41
      additional property: Energy
        type: PropertyValue
        value: 0.401
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.889
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.048
      additional property: Liveness
        type: PropertyValue
        value: 0.083
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.245
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.575
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Cantar de Emigração
  type: MusicAlbum
  date published: 2020-11-13
album: Ó Meu Menino
  type: MusicAlbum
  date published: 2020-12-23
album: Liberdade
  type: MusicAlbum
  date published: 2024-04-25