Soumyadeep Sarkar
type: MusicGroup
popularity: 14
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e764ed9ccf7de8eb7200ed0149eaee8f41394df478a0337ea8593bc3d35b4fb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67a966a6-1e56-4362-85fc-8daf44aaebe7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67a966a6-1e56-4362-85fc-8daf44aaebe7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67a966a6-1e56-4362-85fc-8daf44aaebe7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1e764ed9ccf7de8eb7200ed0149eaee8f41394df478a0337ea8593bc3d35b4fb","name":"Soumyadeep Sarkar","registered_at":"2026-06-14T15:20:44Z","symbol":"NIM0494137","token_address":"0x84d718f273fdb19032144148e495c5dace9e5561","type":"artist","uuid":"67a966a6-1e56-4362-85fc-8daf44aaebe7"}
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 0x1e764ed9ccf7de8eb7200ed0149eaee8f41394df478a0337ea8593bc3d35b4fb. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67a966a6-1e56-4362-85fc-8daf44aaebe7.json and https://artists.proofprofile.net/proofs/artist/67a966a6-1e56-4362-85fc-8daf44aaebe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T20:19:15Z
  text: {"copyright_id":"0x1e764ed9ccf7de8eb7200ed0149eaee8f41394df478a0337ea8593bc3d35b4fb","name":"Soumyadeep Sarkar","registered_at":"2026-06-14T15:20:44Z","symbol":"NIM0494137","token_address":"0x84d718f273fdb19032144148e495c5dace9e5561","type":"artist","uuid":"67a966a6-1e56-4362-85fc-8daf44aaebe7"}
album: Bideshini
  type: MusicAlbum
  date published: 2023-05-24
album: Durga Maa
  type: MusicAlbum
  date published: 2023-10-20
album: Nodir Gaan
  type: MusicAlbum
  date published: 2024-01-10