Zéfa & Sua Trupe Imaginária
type: MusicGroup
popularity: 4
followers: 39
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa05be6c996a283f493ee339d5de9956f1bf83d83d53d42b02fc37f096ff0d82c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8f4452f-df8e-41bd-8cc0-d799e0484e54.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8f4452f-df8e-41bd-8cc0-d799e0484e54.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8f4452f-df8e-41bd-8cc0-d799e0484e54
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa05be6c996a283f493ee339d5de9956f1bf83d83d53d42b02fc37f096ff0d82c","name":"Zéfa & Sua Trupe Imaginária","registered_at":"2026-06-20T22:01:43Z","symbol":"NIM1727793","token_address":"0x4d917fdf9020215a28041e3ea2d615ab2c79c0de","type":"artist","uuid":"c8f4452f-df8e-41bd-8cc0-d799e0484e54"}
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 0xa05be6c996a283f493ee339d5de9956f1bf83d83d53d42b02fc37f096ff0d82c. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8f4452f-df8e-41bd-8cc0-d799e0484e54.json and https://artists.proofprofile.net/proofs/artist/c8f4452f-df8e-41bd-8cc0-d799e0484e54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xa05be6c996a283f493ee339d5de9956f1bf83d83d53d42b02fc37f096ff0d82c","name":"Zéfa & Sua Trupe Imaginária","registered_at":"2026-06-20T22:01:43Z","symbol":"NIM1727793","token_address":"0x4d917fdf9020215a28041e3ea2d615ab2c79c0de","type":"artist","uuid":"c8f4452f-df8e-41bd-8cc0-d799e0484e54"}
album: Contratempo
  type: MusicAlbum
  date published: 2021-09-17
  track: Contratempo
    type: MusicRecording
    duration: PT4M10S
    duration ms: 250124
    explicit: false
    by artist: Zéfa & Sua Trupe Imaginária
    in album: Contratempo
      type: MusicAlbum
      date published: 2021-09-17
    isrc code: BRYNJ2100011
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T19:56:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x03d11a5c3db495a98ac9cdf5a621baf2a0f45e3f9ca3387cc096b627a99a6d8e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958775
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958775
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYNJ2100011
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T20:13:58Z
    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 0x03d11a5c3db495a98ac9cdf5a621baf2a0f45e3f9ca3387cc096b627a99a6d8e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BRYNJ2100011.
      date published: 2026-07-19T20:13:58Z
    audio: Contratempo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.977
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.479
      additional property: Energy
        type: PropertyValue
        value: 0.837
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.043
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.69
      additional property: Liveness
        type: PropertyValue
        value: 0.172
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.494
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.157
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Je T'aime... Numa Tarde De Domingo
  type: MusicAlbum
  date published: 2025-11-01