Rubens Graça
type: MusicGroup
popularity: 2
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74da768d1e4cf7ed1a8abc9b649e4a3359ff1f6c735a9f86d27b4675d9eec87a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdd5854c-b46a-4434-9c3f-2aca508908af.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdd5854c-b46a-4434-9c3f-2aca508908af.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdd5854c-b46a-4434-9c3f-2aca508908af
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74da768d1e4cf7ed1a8abc9b649e4a3359ff1f6c735a9f86d27b4675d9eec87a","name":"Rubens Graça","registered_at":"2026-06-21T18:15:23Z","symbol":"NIM1994934","token_address":"0xadb7b1d89cc36553dcfb546acfbcb1913bb82967","type":"artist","uuid":"fdd5854c-b46a-4434-9c3f-2aca508908af"}
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 0x74da768d1e4cf7ed1a8abc9b649e4a3359ff1f6c735a9f86d27b4675d9eec87a. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd5854c-b46a-4434-9c3f-2aca508908af.json and https://artists.proofprofile.net/proofs/artist/fdd5854c-b46a-4434-9c3f-2aca508908af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x74da768d1e4cf7ed1a8abc9b649e4a3359ff1f6c735a9f86d27b4675d9eec87a","name":"Rubens Graça","registered_at":"2026-06-21T18:15:23Z","symbol":"NIM1994934","token_address":"0xadb7b1d89cc36553dcfb546acfbcb1913bb82967","type":"artist","uuid":"fdd5854c-b46a-4434-9c3f-2aca508908af"}
album: Nós Te Coroamos
  type: MusicAlbum
  date published: 2025-02-01
  track: Nós Te Coroamos
    type: MusicRecording
    duration: PT4M15S
    duration ms: 255214
    explicit: false
    by artist: Rubens Graça
    in album: Nós Te Coroamos
      type: MusicAlbum
      date published: 2025-02-01
    isrc code: BCRUR2500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T10:13:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0a9e6bfc46725e2cb64a2eb07777b2c575a4f1c3b743ff32363e0c65a5c5924c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958996
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958996
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCRUR2500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:09:29Z
    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 0x0a9e6bfc46725e2cb64a2eb07777b2c575a4f1c3b743ff32363e0c65a5c5924c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:29Z), 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/BCRUR2500001.
      date published: 2026-07-21T13:09:29Z
    audio: Nós Te Coroamos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.758
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.487
      additional property: Energy
        type: PropertyValue
        value: 0.471
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.357
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.4
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.243
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.822
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major