A Metrópole
type: MusicGroup
genre: brazilian rock
popularity: 16
followers: 79
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeef8d16b581251a9855c5dee698681a460874d06b67e8a2bd22f38953608d2e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82011ec8-b352-4f23-8ce8-a090920fea38.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82011ec8-b352-4f23-8ce8-a090920fea38.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82011ec8-b352-4f23-8ce8-a090920fea38
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeef8d16b581251a9855c5dee698681a460874d06b67e8a2bd22f38953608d2e3","name":"A Metrópole","registered_at":"2026-06-14T18:12:15Z","symbol":"NIM0535028","token_address":"0x70f40b2bc0369abe405a583053d24a9304826c8d","type":"artist","uuid":"82011ec8-b352-4f23-8ce8-a090920fea38"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef8d16b581251a9855c5dee698681a460874d06b67e8a2bd22f38953608d2e3. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82011ec8-b352-4f23-8ce8-a090920fea38.json and https://artists.proofprofile.net/proofs/artist/82011ec8-b352-4f23-8ce8-a090920fea38.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0xeef8d16b581251a9855c5dee698681a460874d06b67e8a2bd22f38953608d2e3","name":"A Metrópole","registered_at":"2026-06-14T18:12:15Z","symbol":"NIM0535028","token_address":"0x70f40b2bc0369abe405a583053d24a9304826c8d","type":"artist","uuid":"82011ec8-b352-4f23-8ce8-a090920fea38"}
album: Insatisfação
  type: MusicAlbum
  date published: 2003-07-03
album: Foi Você Quem Quis
  type: MusicAlbum
  date published: 2004
album: A Metrópole
  type: MusicAlbum
  date published: 2004-09-20
album: Ensaios & Demos
  type: MusicAlbum
  date published: 2022-02-25
  track: Cada Dia
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210687
    explicit: false
    by artist: A Metrópole
    in album: Ensaios & Demos
      type: MusicAlbum
      date published: 2022-02-25
    genre: brazilian rock
    isrc code: BRHP92200011
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T09:22:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xac7964d37d22fd1d276fab166f3a4cf11c2c1449f24b40345ca1d1646100371b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958991
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958991
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRHP92200011
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T10:04:40Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7964d37d22fd1d276fab166f3a4cf11c2c1449f24b40345ca1d1646100371b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRHP92200011 — a six-check JSON result.
      date published: 2026-07-21T10:04:40Z
    audio: Cada Dia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.831
      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: 0.531
      additional property: Energy
        type: PropertyValue
        value: 0.787
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.146
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.046
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.716
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Radio Session
  type: MusicAlbum
  date published: 2023-11-18