Clarissa Ferreira
type: MusicGroup
genre: acid rock
popularity: 7
followers: 1120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa57caa72bf729be38bd224145ffa79a8f82826c93942383d68e0c8cc749821a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df7b7133-418a-4b8d-b3e5-ab0added8037.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df7b7133-418a-4b8d-b3e5-ab0added8037.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df7b7133-418a-4b8d-b3e5-ab0added8037
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa57caa72bf729be38bd224145ffa79a8f82826c93942383d68e0c8cc749821a4","name":"Clarissa Ferreira","registered_at":"2026-06-21T05:52:16Z","symbol":"NIM1839754","token_address":"0xf577f72754c472958552e500fc74292b96948c79","type":"artist","uuid":"df7b7133-418a-4b8d-b3e5-ab0added8037"}
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 0xa57caa72bf729be38bd224145ffa79a8f82826c93942383d68e0c8cc749821a4. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df7b7133-418a-4b8d-b3e5-ab0added8037.json and https://artists.proofprofile.net/proofs/artist/df7b7133-418a-4b8d-b3e5-ab0added8037.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa57caa72bf729be38bd224145ffa79a8f82826c93942383d68e0c8cc749821a4","name":"Clarissa Ferreira","registered_at":"2026-06-21T05:52:16Z","symbol":"NIM1839754","token_address":"0xf577f72754c472958552e500fc74292b96948c79","type":"artist","uuid":"df7b7133-418a-4b8d-b3e5-ab0added8037"}
album: Manifesto Líquido
  type: MusicAlbum
  date published: 2018-09-13
album: Satélites
  type: MusicAlbum
  date published: 2020-04-24
album: Mulheres da Guerra
  type: MusicAlbum
  date published: 2020-11-30
album: Je suis SUS
  type: MusicAlbum
  date published: 2021-07-22
album: Gauche
  type: MusicAlbum
  date published: 2022-09-20
album: Tiranas
  type: MusicAlbum
  date published: 2023-03-24
  track: Tiranas
    type: MusicRecording
    duration: PT4M59S
    duration ms: 299072
    explicit: false
    by artist: Clarissa Ferreira
    in album: Tiranas
      type: MusicAlbum
      date published: 2023-03-24
    genre: acid rock
    isrc code: BX6CL2300001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T03:52:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf08482304c73f26979e28be0903373f863957e391ac8090ddfdc68d51b4ba35f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6CL2300001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xf08482304c73f26979e28be0903373f863957e391ac8090ddfdc68d51b4ba35f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX6CL2300001.
      date published: 2026-07-08T03:20:19Z
    audio: Tiranas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.916
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.667
      additional property: Energy
        type: PropertyValue
        value: 0.244
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.936
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.678
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.544
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Abuelita
  type: MusicAlbum
  date published: 2023-06-09
album: Flor Extinta
  type: MusicAlbum
  date published: 2023-10-06
album: Aprendendo
  type: MusicAlbum
  date published: 2024-03-28
album: Pampa
  type: MusicAlbum
  date published: 2024-03-29
album: LaVaca
  type: MusicAlbum
  date published: 2024-04-05
  track: Pampa
    type: MusicRecording
    duration: PT3M31S
    duration ms: 211366
    explicit: false
    by artist: Clarissa Ferreira
    in album: LaVaca
      type: MusicAlbum
      date published: 2024-04-05
    genre: acid rock
    isrc code: BX6CL2400001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T14:11:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0c5ea6f9b8aaf0f4776fcff9890d115743d3fa5cb534b4b56efdcf005af4b264
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6CL2400001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 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 0x0c5ea6f9b8aaf0f4776fcff9890d115743d3fa5cb534b4b56efdcf005af4b264. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BX6CL2400001.
      date published: 2026-07-05T18:48:28Z
    audio: Pampa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.077
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Musical Key
type: PropertyValue
value: 9

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 3

Danceability
type: PropertyValue
value: 0.739

Energy
type: PropertyValue
value: 0.387

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.859

Instrumentalness
type: PropertyValue
value: 0.001

Liveness
type: PropertyValue
value: 0.113

Valence (Positivity)
type: PropertyValue
value: 0.46

Loudness (dB)
type: PropertyValue
value: -10.19

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor