Sapana Roka
type: MusicGroup
popularity: 2
followers: 768
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x203268fa5213334c540876c37986e1a34b2aa2f960a0c619548d667bbb0b8f13
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953982
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953982
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cf73e6a-61db-4484-ab89-d1cb3fd40f2f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cf73e6a-61db-4484-ab89-d1cb3fd40f2f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2cf73e6a-61db-4484-ab89-d1cb3fd40f2f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:42:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x203268fa5213334c540876c37986e1a34b2aa2f960a0c619548d667bbb0b8f13","name":"Sapana Roka","registered_at":"2026-06-16T05:10:29Z","symbol":"NIM0947521","token_address":"0x00e581e9ed59151f4fa43622816eedb895da41a4","type":"artist","uuid":"2cf73e6a-61db-4484-ab89-d1cb3fd40f2f"}
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 0x203268fa5213334c540876c37986e1a34b2aa2f960a0c619548d667bbb0b8f13. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cf73e6a-61db-4484-ab89-d1cb3fd40f2f.json and https://artists.proofprofile.net/proofs/artist/2cf73e6a-61db-4484-ab89-d1cb3fd40f2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x203268fa5213334c540876c37986e1a34b2aa2f960a0c619548d667bbb0b8f13","name":"Sapana Roka","registered_at":"2026-06-16T05:10:29Z","symbol":"NIM0947521","token_address":"0x00e581e9ed59151f4fa43622816eedb895da41a4","type":"artist","uuid":"2cf73e6a-61db-4484-ab89-d1cb3fd40f2f"}
album: Nandani
  type: MusicAlbum
  date published: 2022-07-01
  track: Nandani
    type: MusicRecording
    duration: PT8M41S
    duration ms: 521690
    explicit: false
    by artist: Sapana Roka
    in album: Nandani
      type: MusicAlbum
      date published: 2022-07-01
    isrc code: SE6SA2232780
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:05:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3c86f955a17e84970d0f54c4fcbca753ae25cd0520732be83aad7a4f7c0924da
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958903
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958903
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2232780
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:03:31Z
    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 0x3c86f955a17e84970d0f54c4fcbca753ae25cd0520732be83aad7a4f7c0924da. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:03:31Z), 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/SE6SA2232780.
      date published: 2026-07-20T18:03:31Z
    audio: Nandani
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.644
      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: 0.605
      additional property: Energy
        type: PropertyValue
        value: 0.742
      additional property: Speechiness
        type: PropertyValue
        value: 0.111
      additional property: Acousticness
        type: PropertyValue
        value: 0.663
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.523
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.639
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.558
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Raja Ji
  type: MusicAlbum
  date published: 2023-02-22