Han Sara, Tùng Maru
type: MusicGroup
popularity: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28a7cf1e09bd389346dd802421807a9606505e52b998432a0e564c9ce43d2ce0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5232125f-b741-477a-a450-1f7b23ddecb7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5232125f-b741-477a-a450-1f7b23ddecb7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5232125f-b741-477a-a450-1f7b23ddecb7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28a7cf1e09bd389346dd802421807a9606505e52b998432a0e564c9ce43d2ce0","name":"Han Sara, Tùng Maru","registered_at":"2026-06-16T18:09:58Z","symbol":"NIM1133550","token_address":"0x5b15bd197a7b4dcd772d51844bfde1377b156211","type":"artist","uuid":"5232125f-b741-477a-a450-1f7b23ddecb7"}
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 0x28a7cf1e09bd389346dd802421807a9606505e52b998432a0e564c9ce43d2ce0. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5232125f-b741-477a-a450-1f7b23ddecb7.json and https://artists.proofprofile.net/proofs/artist/5232125f-b741-477a-a450-1f7b23ddecb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x28a7cf1e09bd389346dd802421807a9606505e52b998432a0e564c9ce43d2ce0","name":"Han Sara, Tùng Maru","registered_at":"2026-06-16T18:09:58Z","symbol":"NIM1133550","token_address":"0x5b15bd197a7b4dcd772d51844bfde1377b156211","type":"artist","uuid":"5232125f-b741-477a-a450-1f7b23ddecb7"}