David Leonardo Dias da Silva
type: MusicGroup
popularity: 4
followers: 98
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2a1bcd21542de11b4df85e229a1370629b7bed468bb037f7c02b3f016989399
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16103477-9aed-4d44-b6b4-7cd45871f98e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16103477-9aed-4d44-b6b4-7cd45871f98e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16103477-9aed-4d44-b6b4-7cd45871f98e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2a1bcd21542de11b4df85e229a1370629b7bed468bb037f7c02b3f016989399","name":"David Leonardo Dias da Silva","registered_at":"2026-06-15T21:14:39Z","symbol":"NIM0833907","token_address":"0xb4056a2c7d20cb4da5fae364961131757b081069","type":"artist","uuid":"16103477-9aed-4d44-b6b4-7cd45871f98e"}
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 0xa2a1bcd21542de11b4df85e229a1370629b7bed468bb037f7c02b3f016989399. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16103477-9aed-4d44-b6b4-7cd45871f98e.json and https://artists.proofprofile.net/proofs/artist/16103477-9aed-4d44-b6b4-7cd45871f98e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xa2a1bcd21542de11b4df85e229a1370629b7bed468bb037f7c02b3f016989399","name":"David Leonardo Dias da Silva","registered_at":"2026-06-15T21:14:39Z","symbol":"NIM0833907","token_address":"0xb4056a2c7d20cb4da5fae364961131757b081069","type":"artist","uuid":"16103477-9aed-4d44-b6b4-7cd45871f98e"}
album: Canções de Ninar
  type: MusicAlbum
  date published: 2021-01-01
album: Canções de Ninar, Vol. 2
  type: MusicAlbum
  date published: 2021-06-30
  track: Se Eu Fosse um Elefante
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193375
    explicit: false
    by artist: David Leonardo Dias da Silva
    in album: Canções de Ninar, Vol. 2
      type: MusicAlbum
      date published: 2021-06-30
    isrc code: QZHZ62192961
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:32:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xedbc6ae5d7756e7f02f544387723058bad5d00f26e22502a7d44363cd7d84b55
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958783
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958783
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ62192961
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T23:36:37Z
    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 0xedbc6ae5d7756e7f02f544387723058bad5d00f26e22502a7d44363cd7d84b55. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:37Z), 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/QZHZ62192961.
      date published: 2026-07-19T23:36:37Z
    audio: Se Eu Fosse um Elefante
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.996
      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: 0.537
      additional property: Energy
        type: PropertyValue
        value: 0.184
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.935
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.31
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.174
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.63
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: A Oração (Live)
  type: MusicAlbum
  date published: 2021-07-31
album: Canções de Ninar, Vol. 3
  type: MusicAlbum
  date published: 2021-11-01
album: Canções de Ninar - Sons da Natureza
  type: MusicAlbum
  date published: 2022-04-30
album: Canções de Ninar, Vol. 5 (Instrumental)
  type: MusicAlbum
  date published: 2022-05-01