Shankha Banik Chowdhury
type: MusicGroup
genre: bangla pop
popularity: 18
followers: 548
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb721c02eae4755eb2413edc33a83d6e2c0d4325b4cec4b49e6ecbcbf8351882a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953645
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953645
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T14:31:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb721c02eae4755eb2413edc33a83d6e2c0d4325b4cec4b49e6ecbcbf8351882a","name":"Shankha Banik Chowdhury","registered_at":"2026-06-14T10:58:40Z","symbol":"NIM0431599","token_address":"0x5bf6732081c2f92171a6ee2e0b33e6addb5aebb3","type":"artist","uuid":"3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332"}
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 0xb721c02eae4755eb2413edc33a83d6e2c0d4325b4cec4b49e6ecbcbf8351882a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332.json and https://artists.proofprofile.net/proofs/artist/3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0xb721c02eae4755eb2413edc33a83d6e2c0d4325b4cec4b49e6ecbcbf8351882a","name":"Shankha Banik Chowdhury","registered_at":"2026-06-14T10:58:40Z","symbol":"NIM0431599","token_address":"0x5bf6732081c2f92171a6ee2e0b33e6addb5aebb3","type":"artist","uuid":"3e375ccf-8d8b-4ec9-ae8f-3e0c565e8332"}
album: Ma Go Maa
  type: MusicAlbum
  date published: 2022-10-01
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  type: MusicAlbum
  date published: 2023-08-22
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  type: MusicAlbum
  date published: 2023-10-17
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  type: MusicAlbum
  date published: 2025-03-18