Dilshad Khan
type: MusicGroup
description: Dilshad Khan (born Arabinda Dasgupta) is a Hindustani classical singer and the husband of Parween Sultana. Khan is the younger brother of sarod musician Buddhadev Das Gupta. Early life and background
popularity: 6
followers: 2027
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdd2121a45d49727bae6e2e1f42e8836903cd5b5e235d2a8a45201da206a8b050
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/60173ba3-6faa-460a-9c4a-e751ab24961c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60173ba3-6faa-460a-9c4a-e751ab24961c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/60173ba3-6faa-460a-9c4a-e751ab24961c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdd2121a45d49727bae6e2e1f42e8836903cd5b5e235d2a8a45201da206a8b050","name":"Dilshad Khan","registered_at":"2026-06-16T23:09:32Z","symbol":"NIM1205024","token_address":"0x008dcd807301a75c0bfd2f3aa5b8db3135248701","type":"artist","uuid":"60173ba3-6faa-460a-9c4a-e751ab24961c"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2121a45d49727bae6e2e1f42e8836903cd5b5e235d2a8a45201da206a8b050. 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/60173ba3-6faa-460a-9c4a-e751ab24961c.json and https://artists.proofprofile.net/proofs/artist/60173ba3-6faa-460a-9c4a-e751ab24961c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xdd2121a45d49727bae6e2e1f42e8836903cd5b5e235d2a8a45201da206a8b050","name":"Dilshad Khan","registered_at":"2026-06-16T23:09:32Z","symbol":"NIM1205024","token_address":"0x008dcd807301a75c0bfd2f3aa5b8db3135248701","type":"artist","uuid":"60173ba3-6faa-460a-9c4a-e751ab24961c"}
album: Duologue in Raga
  type: MusicAlbum
  date published: 1995-03-12