Somdutta Das
type: MusicGroup
genre: bangla pop
popularity: 8
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb18501f5d257aee1f1ebe660ba91a7c7f136d49e7e2959360d3ee91e5118e86
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e332ff73-40b2-4637-9429-9817cc317450.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e332ff73-40b2-4637-9429-9817cc317450.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e332ff73-40b2-4637-9429-9817cc317450
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb18501f5d257aee1f1ebe660ba91a7c7f136d49e7e2959360d3ee91e5118e86","name":"Somdutta Das","registered_at":"2026-06-21T07:47:55Z","symbol":"NIM1866366","token_address":"0x2c25a9feffca922f1214d9805e53fcebd5e0dee0","type":"artist","uuid":"e332ff73-40b2-4637-9429-9817cc317450"}
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 0xcb18501f5d257aee1f1ebe660ba91a7c7f136d49e7e2959360d3ee91e5118e86. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e332ff73-40b2-4637-9429-9817cc317450.json and https://artists.proofprofile.net/proofs/artist/e332ff73-40b2-4637-9429-9817cc317450.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xcb18501f5d257aee1f1ebe660ba91a7c7f136d49e7e2959360d3ee91e5118e86","name":"Somdutta Das","registered_at":"2026-06-21T07:47:55Z","symbol":"NIM1866366","token_address":"0x2c25a9feffca922f1214d9805e53fcebd5e0dee0","type":"artist","uuid":"e332ff73-40b2-4637-9429-9817cc317450"}