Uma Khan
type: MusicGroup
description: Uma Khan is a Bangladeshi female playback singer. She won Bangladesh National Film Award for Best Female Playback Singer for the film Hason Raja (2002). Family Uma Khan was among five daughters and f
popularity: 3
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd56072c1788f607d8de4d7bdeac4d1ba04aa968b849d24c23c6d5fbe0b67233c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eca7e5f8-b98c-4193-8dcd-21cce1bea5e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eca7e5f8-b98c-4193-8dcd-21cce1bea5e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eca7e5f8-b98c-4193-8dcd-21cce1bea5e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd56072c1788f607d8de4d7bdeac4d1ba04aa968b849d24c23c6d5fbe0b67233c","name":"Uma Khan","registered_at":"2026-06-21T11:29:14Z","symbol":"NIM1908007","token_address":"0x0f13ae08c14a055e77878212f4d394a7386b8ae1","type":"artist","uuid":"eca7e5f8-b98c-4193-8dcd-21cce1bea5e3"}
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 0xd56072c1788f607d8de4d7bdeac4d1ba04aa968b849d24c23c6d5fbe0b67233c. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eca7e5f8-b98c-4193-8dcd-21cce1bea5e3.json and https://artists.proofprofile.net/proofs/artist/eca7e5f8-b98c-4193-8dcd-21cce1bea5e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xd56072c1788f607d8de4d7bdeac4d1ba04aa968b849d24c23c6d5fbe0b67233c","name":"Uma Khan","registered_at":"2026-06-21T11:29:14Z","symbol":"NIM1908007","token_address":"0x0f13ae08c14a055e77878212f4d394a7386b8ae1","type":"artist","uuid":"eca7e5f8-b98c-4193-8dcd-21cce1bea5e3"}
album: Amar Majhe Nei To Ami
  type: MusicAlbum
  date published: 2002
album: Choto Choto Kotha
  type: MusicAlbum
  date published: 2014
album: Tumi Boroi Sheyana (From "Lat Saheb")
  type: MusicAlbum
  date published: 2024-08-02
album: Amake Je Dhore (From "Antor Jala")
  type: MusicAlbum
  date published: 2025-02-18