Tarun Chakma
type: MusicGroup
popularity: 8
followers: 425
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f476e99f673549fd0f587d8bae7e2e3adf31824d1c5957e8cf03ed9ad921fd1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954097
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954097
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7afb6547-633b-419f-8949-975055da84fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7afb6547-633b-419f-8949-975055da84fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7afb6547-633b-419f-8949-975055da84fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T13:13:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5f476e99f673549fd0f587d8bae7e2e3adf31824d1c5957e8cf03ed9ad921fd1","name":"Tarun Chakma","registered_at":"2026-06-17T08:31:19Z","symbol":"NIM1339034","token_address":"0x2b157d200ac8866a188c305a65e7f98adc479f66","type":"artist","uuid":"7afb6547-633b-419f-8949-975055da84fb"}
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 0x5f476e99f673549fd0f587d8bae7e2e3adf31824d1c5957e8cf03ed9ad921fd1. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7afb6547-633b-419f-8949-975055da84fb.json and https://artists.proofprofile.net/proofs/artist/7afb6547-633b-419f-8949-975055da84fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0x5f476e99f673549fd0f587d8bae7e2e3adf31824d1c5957e8cf03ed9ad921fd1","name":"Tarun Chakma","registered_at":"2026-06-17T08:31:19Z","symbol":"NIM1339034","token_address":"0x2b157d200ac8866a188c305a65e7f98adc479f66","type":"artist","uuid":"7afb6547-633b-419f-8949-975055da84fb"}