Letícia Coelho
type: MusicGroup
popularity: 3
followers: 359
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f7ea73685ad240ad6da444048d29f8fb0b58ee673421b6a99e6885f4126a5ae
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/d00037dd-55db-4158-8fd3-878b70c17522.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d00037dd-55db-4158-8fd3-878b70c17522.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d00037dd-55db-4158-8fd3-878b70c17522
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f7ea73685ad240ad6da444048d29f8fb0b58ee673421b6a99e6885f4126a5ae","name":"Letícia Coelho","registered_at":"2026-06-21T00:44:24Z","symbol":"NIM1767234","token_address":"0x3a7a6511d20f5b62305465172f210d53d499c3e4","type":"artist","uuid":"d00037dd-55db-4158-8fd3-878b70c17522"}
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 0x8f7ea73685ad240ad6da444048d29f8fb0b58ee673421b6a99e6885f4126a5ae. 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/d00037dd-55db-4158-8fd3-878b70c17522.json and https://artists.proofprofile.net/proofs/artist/d00037dd-55db-4158-8fd3-878b70c17522.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x8f7ea73685ad240ad6da444048d29f8fb0b58ee673421b6a99e6885f4126a5ae","name":"Letícia Coelho","registered_at":"2026-06-21T00:44:24Z","symbol":"NIM1767234","token_address":"0x3a7a6511d20f5b62305465172f210d53d499c3e4","type":"artist","uuid":"d00037dd-55db-4158-8fd3-878b70c17522"}
album: Brota
  type: MusicAlbum
  date published: 2018-11-09
album: Nômade Canção Acolhimento
  type: MusicAlbum
  date published: 2021-02-05
album: Baião de Oyá
  type: MusicAlbum
  date published: 2021-10-21
album: No Passo da Rabeca
  type: MusicAlbum
  date published: 2021-11-11
  track: Ossain
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199900
    explicit: false
    by artist: Letícia Coelho
    in album: No Passo da Rabeca
      type: MusicAlbum
      date published: 2021-11-11
    isrc code: BCHB12100008
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T14:24:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5f383f0750d6ccb98ed0af5e068cef0ef7c76b5cd41fa772ee475f892ff4f238
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960418
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960418
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCHB12100008
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T15:20:15Z
    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 0x5f383f0750d6ccb98ed0af5e068cef0ef7c76b5cd41fa772ee475f892ff4f238. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BCHB12100008.
      date published: 2026-07-31T15:20:15Z
    audio: Ossain
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 168.019
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.459
      additional property: Energy
        type: PropertyValue
        value: 0.555
      additional property: Speechiness
        type: PropertyValue
        value: 0.28
      additional property: Acousticness
        type: PropertyValue
        value: 0.833
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.5
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.246
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Cuatro Cantos
    type: MusicRecording
    duration: PT5M21S
    duration ms: 321433
    explicit: false
    by artist: Letícia Coelho
    in album: No Passo da Rabeca
      type: MusicAlbum
      date published: 2021-11-11
    isrc code: BCHB12100014
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T03:20:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x24f6ee2363cb5cb7cffc2702c760fd8449b6a1988415e3bec6f20bda52284c4e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960344
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960344
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCHB12100014
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T04:14:58Z
    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 0x24f6ee2363cb5cb7cffc2702c760fd8449b6a1988415e3bec6f20bda52284c4e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BCHB12100014.
      date published: 2026-07-31T04:14:58Z
    audio: Cuatro Cantos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.431
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.398
      additional property: Energy
        type: PropertyValue
        value: 0.155
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.97
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.169

Valence (Positivity)
type: PropertyValue
value: 0.507

Loudness (dB)
type: PropertyValue
value: -14.733

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Brota
type: MusicAlbum
date published: 2022-07-14