Hải Đăng
type: MusicGroup
genre: vietnam indie
popularity: 9
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8cf180cba10f05c20e882265a37e755dabb4b627b356a75c5cd9718f431bb68
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953854
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953854
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0219c703-1adc-4088-b962-26b78b56a9a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0219c703-1adc-4088-b962-26b78b56a9a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0219c703-1adc-4088-b962-26b78b56a9a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:16:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8cf180cba10f05c20e882265a37e755dabb4b627b356a75c5cd9718f431bb68","name":"Hải Đăng","registered_at":"2026-06-15T14:22:18Z","symbol":"NIM0735520","token_address":"0x971e4209b06ddec402f29c404c855ca88934014a","type":"artist","uuid":"0219c703-1adc-4088-b962-26b78b56a9a4"}
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 0xe8cf180cba10f05c20e882265a37e755dabb4b627b356a75c5cd9718f431bb68. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0219c703-1adc-4088-b962-26b78b56a9a4.json and https://artists.proofprofile.net/proofs/artist/0219c703-1adc-4088-b962-26b78b56a9a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xe8cf180cba10f05c20e882265a37e755dabb4b627b356a75c5cd9718f431bb68","name":"Hải Đăng","registered_at":"2026-06-15T14:22:18Z","symbol":"NIM0735520","token_address":"0x971e4209b06ddec402f29c404c855ca88934014a","type":"artist","uuid":"0219c703-1adc-4088-b962-26b78b56a9a4"}
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