Os Helenos
type: MusicGroup
popularity: 4
followers: 191
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x93d2919f1be3b1b4d79f773b9438e9afb22b546b1c45e2d308b405dd8ad5c2a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c49271e1-f34e-4399-acda-fd43c83afec6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c49271e1-f34e-4399-acda-fd43c83afec6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c49271e1-f34e-4399-acda-fd43c83afec6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x93d2919f1be3b1b4d79f773b9438e9afb22b546b1c45e2d308b405dd8ad5c2a2","name":"Os Helenos","registered_at":"2026-06-20T20:46:16Z","symbol":"NIM1710100","token_address":"0x49dc5fa3349150bfc603991b6b7257c18970ed67","type":"artist","uuid":"c49271e1-f34e-4399-acda-fd43c83afec6"}
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 0x93d2919f1be3b1b4d79f773b9438e9afb22b546b1c45e2d308b405dd8ad5c2a2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c49271e1-f34e-4399-acda-fd43c83afec6.json and https://artists.proofprofile.net/proofs/artist/c49271e1-f34e-4399-acda-fd43c83afec6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x93d2919f1be3b1b4d79f773b9438e9afb22b546b1c45e2d308b405dd8ad5c2a2","name":"Os Helenos","registered_at":"2026-06-20T20:46:16Z","symbol":"NIM1710100","token_address":"0x49dc5fa3349150bfc603991b6b7257c18970ed67","type":"artist","uuid":"c49271e1-f34e-4399-acda-fd43c83afec6"}
album: Os Helenos
  type: MusicAlbum
  date published: 2013-07-23
  track: Sou Botafogo
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186641
    explicit: false
    by artist: Os Helenos
    in album: Os Helenos
      type: MusicAlbum
      date published: 2013-07-23
    isrc code: BRNRX1300003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T02:46:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbd7d5523c41e4a521caf24d84ce04264d9037cc8fe462379bf47a13b7eb6d615
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958812
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958812
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRNRX1300003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T03:24:09Z
    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 0xbd7d5523c41e4a521caf24d84ce04264d9037cc8fe462379bf47a13b7eb6d615. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BRNRX1300003.
      date published: 2026-07-20T03:24:09Z
    audio: Sou Botafogo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.23
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.355
      additional property: Energy
        type: PropertyValue
        value: 0.796
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.042
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.79
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.634
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.486
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major