Antara Chowdhury
type: MusicGroup
genre: bangla pop
description: Antara Chowdhury (born 2 June 1970, in Mumbai, India) is an Indian singer and composer. She is the daughter of the late renowned Composer and Poet Salil Chowdhury and the famous singer Late Sabita Cho
popularity: 25
followers: 18988
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ef4ac7a150c67d7bc2adffb4c1e9d04948f741b265155ac196a1cdf3b376fab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eca8c43-5a21-448e-93d8-41324c04391e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eca8c43-5a21-448e-93d8-41324c04391e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2eca8c43-5a21-448e-93d8-41324c04391e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ef4ac7a150c67d7bc2adffb4c1e9d04948f741b265155ac196a1cdf3b376fab","name":"Antara Chowdhury","registered_at":"2026-06-11T15:19:07Z","symbol":"NIM0061260","token_address":"0x5414343052cb9ee14ccdee0675e35a6b7d38910c","type":"artist","uuid":"2eca8c43-5a21-448e-93d8-41324c04391e"}
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 0x7ef4ac7a150c67d7bc2adffb4c1e9d04948f741b265155ac196a1cdf3b376fab. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eca8c43-5a21-448e-93d8-41324c04391e.json and https://artists.proofprofile.net/proofs/artist/2eca8c43-5a21-448e-93d8-41324c04391e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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  type: MusicAlbum
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