Sparru
type: MusicGroup
genre: piseiro
popularity: 5
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x920f516eef41cb58510fd5cbd8dd61902858079f4140752f5ef06d0eb13e1a67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/747c4c21-1b7e-46cb-a72b-ccce7b6d1522.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/747c4c21-1b7e-46cb-a72b-ccce7b6d1522.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/747c4c21-1b7e-46cb-a72b-ccce7b6d1522
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x920f516eef41cb58510fd5cbd8dd61902858079f4140752f5ef06d0eb13e1a67. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/747c4c21-1b7e-46cb-a72b-ccce7b6d1522.json and https://artists.proofprofile.net/proofs/artist/747c4c21-1b7e-46cb-a72b-ccce7b6d1522.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Xre
  type: MusicAlbum
  date published: 2022-01-15
album: Nostalgia
  type: MusicAlbum
  date published: 2023-02-10
album: É o Bonde
  type: MusicAlbum
  date published: 2023-03-27
album: Rolex Cravejado
  type: MusicAlbum
  date published: 2023-12-28
album: Purple Green
  type: MusicAlbum
  date published: 2024-05-04
album: Ho BeBê
  type: MusicAlbum
  date published: 2024-07-26
album: Agora Eu Sei (Inconcert)
  type: MusicAlbum
  date published: 2024-08-01
album: Minha-Gang
  type: MusicAlbum
  date published: 2024-08-21
album: Melhor Vibe Sparru Inconcert
  type: MusicAlbum
  date published: 2024-08-22
album: Opressão
  type: MusicAlbum
  date published: 2024-10-22
album: Hoje Pode Sonhar
  type: MusicAlbum
  date published: 2024-11-22
album: Malvado Favorito
  type: MusicAlbum
  date published: 2024-11-26
album: Sex On The Beach
  type: MusicAlbum
  date published: 2024-12-16
album: No Love
  type: MusicAlbum
  date published: 2025-01-22
album: 10 Anos à Frente
  type: MusicAlbum
  date published: 2025-01-28
album: Qg da Gang
  type: MusicAlbum
  date published: 2025-07-20
track: Cão de Guarda

Cão de Guarda
type: MusicRecording
duration: PT2M42S
duration ms: 162461
explicit: false
by artist: ISAC
by artist: Sparru
in album: Desacreditado
  type: MusicAlbum
  date published: 2024-07-07
isrc code: QZNJX2418499
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:28:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x50ef2e0c7acd2a7a57bb899ffb31d2513165bb635815c4b42a58552e7b6885d3
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/QZNJX2418499
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ef2e0c7acd2a7a57bb899ffb31d2513165bb635815c4b42a58552e7b6885d3. 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/QZNJX2418499.
  date published: 2026-07-08T03:20:19Z
audio: Cão de Guarda
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.433
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.933
  additional property: Energy
    type: PropertyValue
    value: 0.676
  additional property: Speechiness
    type: PropertyValue
    value: 0.223
  additional property: Acousticness
    type: PropertyValue
    value: 0.032
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.125
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.503
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.803
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major