Nin Hoang
type: MusicGroup
genre: vinahouse
popularity: 14
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfd61c581523e259827c2764d75310d01b17f78456ce5ea7e78db9c8ae48e51b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953648
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953648
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4473c8c8-9346-478e-8b5c-f517b762428a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4473c8c8-9346-478e-8b5c-f517b762428a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4473c8c8-9346-478e-8b5c-f517b762428a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T15:20:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfd61c581523e259827c2764d75310d01b17f78456ce5ea7e78db9c8ae48e51b0","name":"Nin Hoang","registered_at":"2026-06-14T11:37:57Z","symbol":"NIM0440960","token_address":"0x1448d9c5ffb29e63e9c72552284d796be05de8fa","type":"artist","uuid":"4473c8c8-9346-478e-8b5c-f517b762428a"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd61c581523e259827c2764d75310d01b17f78456ce5ea7e78db9c8ae48e51b0. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4473c8c8-9346-478e-8b5c-f517b762428a.json and https://artists.proofprofile.net/proofs/artist/4473c8c8-9346-478e-8b5c-f517b762428a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0xfd61c581523e259827c2764d75310d01b17f78456ce5ea7e78db9c8ae48e51b0","name":"Nin Hoang","registered_at":"2026-06-14T11:37:57Z","symbol":"NIM0440960","token_address":"0x1448d9c5ffb29e63e9c72552284d796be05de8fa","type":"artist","uuid":"4473c8c8-9346-478e-8b5c-f517b762428a"}
album: Neu Em Khong Hanh Phuc Remix
  type: MusicAlbum
  date published: 2021-08-31