Iva Guimarães
type: MusicGroup
popularity: 14
followers: 210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b539a088bba1f785d59d7176d7e037a0aa8c63144664a2d0a3f534edfe7f785
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953674
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f1e5726-9cf5-41b9-a454-5730765e4b98.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f1e5726-9cf5-41b9-a454-5730765e4b98.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5f1e5726-9cf5-41b9-a454-5730765e4b98
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b539a088bba1f785d59d7176d7e037a0aa8c63144664a2d0a3f534edfe7f785","name":"Iva Guimarães","registered_at":"2026-06-14T14:28:45Z","symbol":"NIM0481731","token_address":"0x00c0f48bd1160c06f72aad5b9897a4e5f94d9c3e","type":"artist","uuid":"5f1e5726-9cf5-41b9-a454-5730765e4b98"}
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 0x2b539a088bba1f785d59d7176d7e037a0aa8c63144664a2d0a3f534edfe7f785. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f1e5726-9cf5-41b9-a454-5730765e4b98.json and https://artists.proofprofile.net/proofs/artist/5f1e5726-9cf5-41b9-a454-5730765e4b98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
  text: {"copyright_id":"0x2b539a088bba1f785d59d7176d7e037a0aa8c63144664a2d0a3f534edfe7f785","name":"Iva Guimarães","registered_at":"2026-06-14T14:28:45Z","symbol":"NIM0481731","token_address":"0x00c0f48bd1160c06f72aad5b9897a4e5f94d9c3e","type":"artist","uuid":"5f1e5726-9cf5-41b9-a454-5730765e4b98"}
album: Mais de Ti
  type: MusicAlbum
  date published: 2022-05-14
album: Amado do Pai
  type: MusicAlbum
  date published: 2024-06-14
album: Aleluia, o Salvador Venceu (Ao Vivo)
  type: MusicAlbum
  date published: 2024-11-29
album: Houve um Tempo
  type: MusicAlbum
  date published: 2025-10-03
  track: Houve um Tempo
    type: MusicRecording
    duration: PT1M14S
    duration ms: 74944
    explicit: false
    by artist: Iva Guimarães
    in album: Houve um Tempo
      type: MusicAlbum
      date published: 2025-10-03
    isrc code: BXRW62500020
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T22:14:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x18a131fbfe3f1af52e457482646accc057df71afd54d9c687a651d991986d729
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXRW62500020
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x18a131fbfe3f1af52e457482646accc057df71afd54d9c687a651d991986d729. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXRW62500020.
      date published: 2026-07-04T11:19:20Z
    audio: Houve um Tempo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.999
      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: 0.721
      additional property: Energy
        type: PropertyValue
        value: 0.75
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.039
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.672
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.597
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Pedro
  type: MusicAlbum
  date published: 2025-11-07