Helena Serena
type: MusicGroup
popularity: 6
followers: 201
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c6b9cde998c74f8eb2a15953e9570b5e4c8eaae4a38dfa5f134edb98287f9f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4eb2b4b8-99b6-405d-852b-06e0a12a12ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4eb2b4b8-99b6-405d-852b-06e0a12a12ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4eb2b4b8-99b6-405d-852b-06e0a12a12ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c6b9cde998c74f8eb2a15953e9570b5e4c8eaae4a38dfa5f134edb98287f9f6","name":"Helena Serena","registered_at":"2026-06-16T16:57:17Z","symbol":"NIM1116192","token_address":"0x9fa9e30f8332895f354a467004003da0e6435746","type":"artist","uuid":"4eb2b4b8-99b6-405d-852b-06e0a12a12ca"}
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 0x0c6b9cde998c74f8eb2a15953e9570b5e4c8eaae4a38dfa5f134edb98287f9f6. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4eb2b4b8-99b6-405d-852b-06e0a12a12ca.json and https://artists.proofprofile.net/proofs/artist/4eb2b4b8-99b6-405d-852b-06e0a12a12ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x0c6b9cde998c74f8eb2a15953e9570b5e4c8eaae4a38dfa5f134edb98287f9f6","name":"Helena Serena","registered_at":"2026-06-16T16:57:17Z","symbol":"NIM1116192","token_address":"0x9fa9e30f8332895f354a467004003da0e6435746","type":"artist","uuid":"4eb2b4b8-99b6-405d-852b-06e0a12a12ca"}
album: Confesso
  type: MusicAlbum
  date published: 2020-06-05
  track: Confesso
    type: MusicRecording
    duration: PT3M55S
    duration ms: 235257
    explicit: false
    by artist: Helena Serena
    in album: Confesso
      type: MusicAlbum
      date published: 2020-06-05
    isrc code: BX0CN2000008
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T14:49:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd4a889236b9f5901f2cbdad37821c665dd89e9fcbb7fd2c7fe7ab4f37b8acdf9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958901
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958901
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX0CN2000008
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:07:00Z
    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 0xd4a889236b9f5901f2cbdad37821c665dd89e9fcbb7fd2c7fe7ab4f37b8acdf9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BX0CN2000008.
      date published: 2026-07-20T15:07:00Z
    audio: Confesso
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 173.283
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.584
      additional property: Energy
        type: PropertyValue
        value: 0.174
      additional property: Speechiness
        type: PropertyValue
        value: 0.381
      additional property: Acousticness
        type: PropertyValue
        value: 0.519
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.181
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.292
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.501
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Jorge
  type: MusicAlbum
  date published: 2020-07-03
album: Copo
  type: MusicAlbum
  date published: 2020-07-17
album: Dengo
  type: MusicAlbum
  date published: 2021-02-26
album: Bordô
  type: MusicAlbum
  date published: 2024-07-26
album: Raiz
  type: MusicAlbum
  date published: 2024-08-16
album: Raiz
  type: MusicAlbum
  date published: 2024-08-16
album: Candeia Eu
  type: MusicAlbum
  date published: 2025-02-07
album: Resposta
  type: MusicAlbum
  date published: 2025-05-04