Joaquim Cena
type: MusicGroup
genre: kuduro
popularity: 3
followers: 59
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc34c35224a5fc8d58b1dd40992ca3e63dda420e921b4b1115cbfa849c045a146
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dd65079-8269-47d1-bd55-7d4c35f79028.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dd65079-8269-47d1-bd55-7d4c35f79028.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7dd65079-8269-47d1-bd55-7d4c35f79028
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc34c35224a5fc8d58b1dd40992ca3e63dda420e921b4b1115cbfa849c045a146","name":"Joaquim Cena","registered_at":"2026-06-17T09:21:42Z","symbol":"NIM1351043","token_address":"0xba52c18296f34fd1b2b8154b5a8c82638fdb14d0","type":"artist","uuid":"7dd65079-8269-47d1-bd55-7d4c35f79028"}
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 0xc34c35224a5fc8d58b1dd40992ca3e63dda420e921b4b1115cbfa849c045a146. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dd65079-8269-47d1-bd55-7d4c35f79028.json and https://artists.proofprofile.net/proofs/artist/7dd65079-8269-47d1-bd55-7d4c35f79028.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0xc34c35224a5fc8d58b1dd40992ca3e63dda420e921b4b1115cbfa849c045a146","name":"Joaquim Cena","registered_at":"2026-06-17T09:21:42Z","symbol":"NIM1351043","token_address":"0xba52c18296f34fd1b2b8154b5a8c82638fdb14d0","type":"artist","uuid":"7dd65079-8269-47d1-bd55-7d4c35f79028"}
album: Dança Comigo
  type: MusicAlbum
  date published: 2015-04-27
  track: Vem Bailar Kuduro
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199492
    explicit: false
    by artist: Joaquim Cena
    in album: Dança Comigo
      type: MusicAlbum
      date published: 2015-04-27
    genre: kuduro
    isrc code: PTVI11500056
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:49:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0a53445f0da484514db11ff93bbb71513d1af462cc0f3dc38c34171635b939fe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956790
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956790
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVI11500056
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T12:31:54Z
    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 0x0a53445f0da484514db11ff93bbb71513d1af462cc0f3dc38c34171635b939fe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PTVI11500056.
      date published: 2026-07-05T12:31:54Z
    audio: Vem Bailar Kuduro
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.976
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.761
      additional property: Energy
        type: PropertyValue
        value: 0.945
      additional property: Speechiness
        type: PropertyValue
        value: 0.105
      additional property: Acousticness
        type: PropertyValue
        value: 0.027
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.708
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.42
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ainda Espero por Ti
  type: MusicAlbum
  date published: 2020-04-10