Trương Cao Khoa
type: MusicGroup
genre: v-pop
popularity: 9
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc154f6db858f318b0d2c68568f7de339837c3bfeccc87199c5382f943b8ad35f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e089409-c5f9-4860-adc6-59269554e24c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e089409-c5f9-4860-adc6-59269554e24c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e089409-c5f9-4860-adc6-59269554e24c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc154f6db858f318b0d2c68568f7de339837c3bfeccc87199c5382f943b8ad35f","name":"Trương Cao Khoa","registered_at":"2026-06-16T00:04:11Z","symbol":"NIM0874370","token_address":"0x5c532e5d02fcf95957290433e092f928e3c35bb7","type":"artist","uuid":"1e089409-c5f9-4860-adc6-59269554e24c"}
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 0xc154f6db858f318b0d2c68568f7de339837c3bfeccc87199c5382f943b8ad35f. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e089409-c5f9-4860-adc6-59269554e24c.json and https://artists.proofprofile.net/proofs/artist/1e089409-c5f9-4860-adc6-59269554e24c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xc154f6db858f318b0d2c68568f7de339837c3bfeccc87199c5382f943b8ad35f","name":"Trương Cao Khoa","registered_at":"2026-06-16T00:04:11Z","symbol":"NIM0874370","token_address":"0x5c532e5d02fcf95957290433e092f928e3c35bb7","type":"artist","uuid":"1e089409-c5f9-4860-adc6-59269554e24c"}
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  type: MusicAlbum
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  type: MusicAlbum
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