Hoang Anh
type: MusicGroup
genre: traditional music
popularity: 3
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c5b3631e53f173847372dc58fa7315fd8d263de4d5d58e2cb0305d9fce202e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf177e1c-1185-45b7-bedc-816157cf66aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf177e1c-1185-45b7-bedc-816157cf66aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bf177e1c-1185-45b7-bedc-816157cf66aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c5b3631e53f173847372dc58fa7315fd8d263de4d5d58e2cb0305d9fce202e6","name":"Hoang Anh","registered_at":"2026-06-20T18:35:44Z","symbol":"NIM1680189","token_address":"0x626740136c6bcfce44f6b8f75c0e6476dc0cc1bd","type":"artist","uuid":"bf177e1c-1185-45b7-bedc-816157cf66aa"}
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 0x0c5b3631e53f173847372dc58fa7315fd8d263de4d5d58e2cb0305d9fce202e6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf177e1c-1185-45b7-bedc-816157cf66aa.json and https://artists.proofprofile.net/proofs/artist/bf177e1c-1185-45b7-bedc-816157cf66aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0c5b3631e53f173847372dc58fa7315fd8d263de4d5d58e2cb0305d9fce202e6","name":"Hoang Anh","registered_at":"2026-06-20T18:35:44Z","symbol":"NIM1680189","token_address":"0x626740136c6bcfce44f6b8f75c0e6476dc0cc1bd","type":"artist","uuid":"bf177e1c-1185-45b7-bedc-816157cf66aa"}