Papan Subhendu
type: MusicGroup
genre: bangla pop
popularity: 8
followers: 302
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x219220c4eac52c3e12f18b6ea76c4c1f14345d45017e8b005e46dba8c02e0bdd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/176ea6ea-1488-4d8b-a267-de2d1abf6d3a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/176ea6ea-1488-4d8b-a267-de2d1abf6d3a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/176ea6ea-1488-4d8b-a267-de2d1abf6d3a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x219220c4eac52c3e12f18b6ea76c4c1f14345d45017e8b005e46dba8c02e0bdd","name":"Papan Subhendu","registered_at":"2026-06-15T21:46:46Z","symbol":"NIM0841572","token_address":"0x417c4f7f7aa64c934cd742cf558d7192c7a8193c","type":"artist","uuid":"176ea6ea-1488-4d8b-a267-de2d1abf6d3a"}
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 0x219220c4eac52c3e12f18b6ea76c4c1f14345d45017e8b005e46dba8c02e0bdd. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/176ea6ea-1488-4d8b-a267-de2d1abf6d3a.json and https://artists.proofprofile.net/proofs/artist/176ea6ea-1488-4d8b-a267-de2d1abf6d3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x219220c4eac52c3e12f18b6ea76c4c1f14345d45017e8b005e46dba8c02e0bdd","name":"Papan Subhendu","registered_at":"2026-06-15T21:46:46Z","symbol":"NIM0841572","token_address":"0x417c4f7f7aa64c934cd742cf558d7192c7a8193c","type":"artist","uuid":"176ea6ea-1488-4d8b-a267-de2d1abf6d3a"}
album: Eseche Maa Eseche
  type: MusicAlbum
  date published: 2018
album: Mon Bishade
  type: MusicAlbum
  date published: 2020-08-21
album: Gram Chara Oi Ranga Matir Poth
  type: MusicAlbum
  date published: 2020-09-14
album: Jodi kokhono amay Bhalobasho
  type: MusicAlbum
  date published: 2021-03-18
album: Komola
  type: MusicAlbum
  date published: 2022-01-04
  track: Komola
    type: MusicRecording
    duration: PT3M3S
    duration ms: 183789
    explicit: false
    by artist: Papan Subhendu
    in album: Komola
      type: MusicAlbum
      date published: 2022-01-04
    genre: bangla pop
    isrc code: FRS182169849
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T10:09:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x977c774f033050bc2be5c42a62849cbfc4bd98dc77935157a3555b53d4fb4d66
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958276
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958276
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS182169849
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T10:20:17Z
    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 0x977c774f033050bc2be5c42a62849cbfc4bd98dc77935157a3555b53d4fb4d66. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRS182169849.
      date published: 2026-07-16T10:20:17Z
    audio: Komola
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.713
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.786
      additional property: Speechiness
        type: PropertyValue
        value: 0.245
      additional property: Acousticness
        type: PropertyValue
        value: 0.689
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.688
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.754
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Dure Aro Dure
  type: MusicAlbum
  date published: 2022-06-10
album: Bhalobasha Hoye Jak
  type: MusicAlbum
  date published: 2023-03-21