সাহিত্য চক্রবর্তী
type: MusicGroup
popularity: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb30caca7f9ae1da99d7879166c29b9be3f2c2ad81226c786175025a72ef4d2b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac81ec1e-fd82-4dde-9452-f46521dd4bb3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac81ec1e-fd82-4dde-9452-f46521dd4bb3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ac81ec1e-fd82-4dde-9452-f46521dd4bb3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdb30caca7f9ae1da99d7879166c29b9be3f2c2ad81226c786175025a72ef4d2b","name":"সাহিত্য চক্রবর্তী","registered_at":"2026-06-20T10:10:42Z","symbol":"NIM1588013","token_address":"0x729072e98d58db7bd47af2a5c69e6bc4ec335546","type":"artist","uuid":"ac81ec1e-fd82-4dde-9452-f46521dd4bb3"}
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 0xdb30caca7f9ae1da99d7879166c29b9be3f2c2ad81226c786175025a72ef4d2b. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac81ec1e-fd82-4dde-9452-f46521dd4bb3.json and https://artists.proofprofile.net/proofs/artist/ac81ec1e-fd82-4dde-9452-f46521dd4bb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0xdb30caca7f9ae1da99d7879166c29b9be3f2c2ad81226c786175025a72ef4d2b","name":"সাহিত্য চক্রবর্তী","registered_at":"2026-06-20T10:10:42Z","symbol":"NIM1588013","token_address":"0x729072e98d58db7bd47af2a5c69e6bc4ec335546","type":"artist","uuid":"ac81ec1e-fd82-4dde-9452-f46521dd4bb3"}
album: তোর এই শাস্তি
  type: MusicAlbum
  date published: 2025-03-31