Hai Cơ
type: MusicGroup
popularity: 7
followers: 132
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38e6bebac1defc0edfacc88c33c7d3f56f9fcb4a6dc7d50d30bf5640d8a6048b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39fa3851-44d2-441e-a02b-e5d1c8e2edaf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39fa3851-44d2-441e-a02b-e5d1c8e2edaf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39fa3851-44d2-441e-a02b-e5d1c8e2edaf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x38e6bebac1defc0edfacc88c33c7d3f56f9fcb4a6dc7d50d30bf5640d8a6048b","name":"Hai Cơ","registered_at":"2026-06-16T09:42:45Z","symbol":"NIM1012533","token_address":"0xfb4e724e58f007af56a5ea5a17c1e998409d5c81","type":"artist","uuid":"39fa3851-44d2-441e-a02b-e5d1c8e2edaf"}
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 0x38e6bebac1defc0edfacc88c33c7d3f56f9fcb4a6dc7d50d30bf5640d8a6048b. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39fa3851-44d2-441e-a02b-e5d1c8e2edaf.json and https://artists.proofprofile.net/proofs/artist/39fa3851-44d2-441e-a02b-e5d1c8e2edaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:55:08Z
  text: {"copyright_id":"0x38e6bebac1defc0edfacc88c33c7d3f56f9fcb4a6dc7d50d30bf5640d8a6048b","name":"Hai Cơ","registered_at":"2026-06-16T09:42:45Z","symbol":"NIM1012533","token_address":"0xfb4e724e58f007af56a5ea5a17c1e998409d5c81","type":"artist","uuid":"39fa3851-44d2-441e-a02b-e5d1c8e2edaf"}
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