Otávio Sings
type: MusicGroup
genre: anime rap
genre: nerdcore
popularity: 3
followers: 2364
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x01fbb2b2273ead936d1e880a56adfaedb77f887c770f0fc261dfd5332041128c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8cd84c56-2203-4f3d-88ba-d0d64cb573d2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8cd84c56-2203-4f3d-88ba-d0d64cb573d2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8cd84c56-2203-4f3d-88ba-d0d64cb573d2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x01fbb2b2273ead936d1e880a56adfaedb77f887c770f0fc261dfd5332041128c","name":"Otávio Sings","registered_at":"2026-06-17T14:44:10Z","symbol":"NIM1427880","token_address":"0xed911b110d0936b877b16460dff208b63d786a6f","type":"artist","uuid":"8cd84c56-2203-4f3d-88ba-d0d64cb573d2"}
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 0x01fbb2b2273ead936d1e880a56adfaedb77f887c770f0fc261dfd5332041128c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cd84c56-2203-4f3d-88ba-d0d64cb573d2.json and https://artists.proofprofile.net/proofs/artist/8cd84c56-2203-4f3d-88ba-d0d64cb573d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x01fbb2b2273ead936d1e880a56adfaedb77f887c770f0fc261dfd5332041128c","name":"Otávio Sings","registered_at":"2026-06-17T14:44:10Z","symbol":"NIM1427880","token_address":"0xed911b110d0936b877b16460dff208b63d786a6f","type":"artist","uuid":"8cd84c56-2203-4f3d-88ba-d0d64cb573d2"}
album: Última Esperança
  type: MusicAlbum
  date published: 2021-08-23
album: Seu Pior Pesadelo
  type: MusicAlbum
  date published: 2021-12-03
  track: Seu Pior Pesadelo
    type: MusicRecording
    duration: PT3M52S
    duration ms: 232236
    explicit: false
    by artist: Otávio Sings
    in album: Seu Pior Pesadelo
      type: MusicAlbum
      date published: 2021-12-03
    genre: anime rap
    genre: nerdcore
    isrc code: QZNJZ2193049
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T13:14:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6b10e308ac0f0dbaf67cbad65051a66061b8f64f4c61c2fd79051f61e91050fe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2193049
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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 0x6b10e308ac0f0dbaf67cbad65051a66061b8f64f4c61c2fd79051f61e91050fe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJZ2193049.
      date published: 2026-07-18T19:27:02Z
    audio: Seu Pior Pesadelo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.146
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.536
      additional property: Energy
        type: PropertyValue
        value: 0.663
      additional property: Speechiness
        type: PropertyValue
        value: 0.085
      additional property: Acousticness
        type: PropertyValue
        value: 0.755
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.146
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.41
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.673
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major