Chapéu de Cobra
type: MusicGroup
genre: brazilian rock
popularity: 6
followers: 534
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x25708ec3ed00d6abc7e85fe0b4d5d0cb16eb22775774f60df7ff9dae092333a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f73efe98-f8cd-40eb-879f-69323ec33f85.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f73efe98-f8cd-40eb-879f-69323ec33f85.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f73efe98-f8cd-40eb-879f-69323ec33f85
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x25708ec3ed00d6abc7e85fe0b4d5d0cb16eb22775774f60df7ff9dae092333a2","name":"Chapéu de Cobra","registered_at":"2026-06-21T15:49:48Z","symbol":"NIM1963445","token_address":"0x530ba0918b37e045fb173bd07ddda76ed959b1d0","type":"artist","uuid":"f73efe98-f8cd-40eb-879f-69323ec33f85"}
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 0x25708ec3ed00d6abc7e85fe0b4d5d0cb16eb22775774f60df7ff9dae092333a2. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f73efe98-f8cd-40eb-879f-69323ec33f85.json and https://artists.proofprofile.net/proofs/artist/f73efe98-f8cd-40eb-879f-69323ec33f85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x25708ec3ed00d6abc7e85fe0b4d5d0cb16eb22775774f60df7ff9dae092333a2","name":"Chapéu de Cobra","registered_at":"2026-06-21T15:49:48Z","symbol":"NIM1963445","token_address":"0x530ba0918b37e045fb173bd07ddda76ed959b1d0","type":"artist","uuid":"f73efe98-f8cd-40eb-879f-69323ec33f85"}
album: Chapéu de Cobra
  type: MusicAlbum
  date published: 2001-01-19
album: No Gargalo
  type: MusicAlbum
  date published: 2003-08-13
album: Horizontes
  type: MusicAlbum
  date published: 2013-11-13
album: Lua Interiorana (Live Session)
  type: MusicAlbum
  date published: 2016-06-06
album: Pela Última Vez
  type: MusicAlbum
  date published: 2021-01-31
album: A Última Balada
  type: MusicAlbum
  date published: 2023-10-23
  track: Blues Azedo
    type: MusicRecording
    duration: PT6M4S
    duration ms: 364991
    explicit: false
    by artist: Chapéu de Cobra
    in album: A Última Balada
      type: MusicAlbum
      date published: 2023-10-23
    genre: brazilian rock
    isrc code: QZTVM2383791
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:54:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xca0c659dd96e5f1e8cad115630e006ff003962670f661ae554df85ec4bb9f70b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2383791
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0xca0c659dd96e5f1e8cad115630e006ff003962670f661ae554df85ec4bb9f70b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTVM2383791.
      date published: 2026-07-04T14:03:39Z
    audio: Blues Azedo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 163.104
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.31
      additional property: Energy
        type: PropertyValue
        value: 0.466
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.07
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.282
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.5
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.27
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Rock Bar ( A Última Balada )
    type: MusicRecording
    duration: PT6M45S
    duration ms: 405750
    explicit: false
    by artist: Chapéu de Cobra
    in album: A Última Balada
      type: MusicAlbum
      date published: 2023-10-23
    genre: brazilian rock
    isrc code: QZTVM2383793
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T10:18:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf3b5cffdd3334cb1250e9c6c8565ad3c9fc814e69cc70d5e5aa0316295fab551
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2383793
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0xf3b5cffdd3334cb1250e9c6c8565ad3c9fc814e69cc70d5e5aa0316295fab551. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTVM2383793.
      date published: 2026-07-22T11:35:32Z
    audio: Rock Bar ( A Última Balada )
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.628
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.628
      additional property: Energy
        type: PropertyValue
        value: 0.732
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Ratão do Banhado

Speechiness
type: PropertyValue
value: 0.037

Acousticness
type: PropertyValue
value: 0.361

Instrumentalness
type: PropertyValue
value: 0.296

Liveness
type: PropertyValue
value: 0.132

Valence (Positivity)
type: PropertyValue
value: 0.463

Loudness (dB)
type: PropertyValue
value: -9.999

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Ratão do Banhado
type: MusicAlbum
date published: 2024-02-16