Arpan Karmakar
type: MusicGroup
popularity: 2
followers: 1641
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x401dde76110204d97189164f2a5df2ea2a3a0fd77dbf6330e7c4a0be313cc6f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5bfb2c66-8c84-46f0-b29c-29fe6dd5c406.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5bfb2c66-8c84-46f0-b29c-29fe6dd5c406.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5bfb2c66-8c84-46f0-b29c-29fe6dd5c406
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x401dde76110204d97189164f2a5df2ea2a3a0fd77dbf6330e7c4a0be313cc6f2","name":"Arpan Karmakar","registered_at":"2026-06-16T21:43:01Z","symbol":"NIM1184383","token_address":"0xdcf9f37a4b215696f8998554f92b1935ef47f316","type":"artist","uuid":"5bfb2c66-8c84-46f0-b29c-29fe6dd5c406"}
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 0x401dde76110204d97189164f2a5df2ea2a3a0fd77dbf6330e7c4a0be313cc6f2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bfb2c66-8c84-46f0-b29c-29fe6dd5c406.json and https://artists.proofprofile.net/proofs/artist/5bfb2c66-8c84-46f0-b29c-29fe6dd5c406.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x401dde76110204d97189164f2a5df2ea2a3a0fd77dbf6330e7c4a0be313cc6f2","name":"Arpan Karmakar","registered_at":"2026-06-16T21:43:01Z","symbol":"NIM1184383","token_address":"0xdcf9f37a4b215696f8998554f92b1935ef47f316","type":"artist","uuid":"5bfb2c66-8c84-46f0-b29c-29fe6dd5c406"}
album: Tumi Amay Dakle Keno
  type: MusicAlbum
  date published: 2015
album: Tumi Amay Dakle Keno
  type: MusicAlbum
  date published: 2015-12-24
album: Pash Fera Valobasa
  type: MusicAlbum
  date published: 2017-01-18
album: Bhije Chokh Dekha Hok
  type: MusicAlbum
  date published: 2017-03-15
album: Jatoi Tui Dis Fanki
  type: MusicAlbum
  date published: 2017-04-04
album: Na Bole Amake
  type: MusicAlbum
  date published: 2017-10-09
album: E Bhabe Mon
  type: MusicAlbum
  date published: 2018-05-29
album: Amar MCV
  type: MusicAlbum
  date published: 2018-09-14
album: Bol Ke Jane ?
  type: MusicAlbum
  date published: 2020-02-03
album: Sudhu Tumi
  type: MusicAlbum
  date published: 2023-01-19
  track: Sudhu Tumi
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172880
    explicit: false
    by artist: Arpan Karmakar
    in album: Sudhu Tumi
      type: MusicAlbum
      date published: 2023-01-19
    isrc code: FR2X42304809
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:26:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4ce2fe574c4d893675a5e10d6ea50bc88c3ed1771d1b63ca5a4c4a757bde0838
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42304809
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x4ce2fe574c4d893675a5e10d6ea50bc88c3ed1771d1b63ca5a4c4a757bde0838. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42304809.
      date published: 2026-07-05T10:01:46Z
    audio: Sudhu Tumi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.78
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.606
      additional property: Energy
        type: PropertyValue
        value: 0.577
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.237
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.59
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.038
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Unplugged Bhalobasha
  type: MusicAlbum
  date published: 2024-10-05