Duong Tuan Hai
type: MusicGroup
popularity: 2
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbef338e2f8304f92cc6c7bd096de78a92d3ba2ed63afe0d2532bef970c140927
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/df12e520-1603-4273-8427-3b11494012ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df12e520-1603-4273-8427-3b11494012ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df12e520-1603-4273-8427-3b11494012ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbef338e2f8304f92cc6c7bd096de78a92d3ba2ed63afe0d2532bef970c140927","name":"Duong Tuan Hai","registered_at":"2026-06-21T05:59:19Z","symbol":"NIM1841528","token_address":"0x2aba95725cc41b1a7691510d32dc6522b7fce035","type":"artist","uuid":"df12e520-1603-4273-8427-3b11494012ee"}
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 0xbef338e2f8304f92cc6c7bd096de78a92d3ba2ed63afe0d2532bef970c140927. 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/df12e520-1603-4273-8427-3b11494012ee.json and https://artists.proofprofile.net/proofs/artist/df12e520-1603-4273-8427-3b11494012ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xbef338e2f8304f92cc6c7bd096de78a92d3ba2ed63afe0d2532bef970c140927","name":"Duong Tuan Hai","registered_at":"2026-06-21T05:59:19Z","symbol":"NIM1841528","token_address":"0x2aba95725cc41b1a7691510d32dc6522b7fce035","type":"artist","uuid":"df12e520-1603-4273-8427-3b11494012ee"}
album: Tuyển Tập Những Ca Khúc Hay Nhất Của Dương Tuấn Hải
  type: MusicAlbum
  date published: 2017-02-02
  track: Sao Còn Nhớ Nhau Hoài
    type: MusicRecording
    duration: PT4M53S
    duration ms: 293198
    explicit: false
    by artist: Duong Tuan Hai
    in album: Tuyển Tập Những Ca Khúc Hay Nhất Của Dương Tuấn Hải
      type: MusicAlbum
      date published: 2017-02-02
    isrc code: VNR011035419
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T04:09:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc703fbbaca51f7385ca9ce31a3b2845b24335015226a4cef363a3b47c419bf15
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011035419
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc703fbbaca51f7385ca9ce31a3b2845b24335015226a4cef363a3b47c419bf15. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011035419.
      date published: 2026-07-05T10:01:46Z
    audio: Sao Còn Nhớ Nhau Hoài
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.057
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.589
      additional property: Energy
        type: PropertyValue
        value: 0.58
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.805
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.521
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.899
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Tuyển Tập Những Ca Khúc Trữ Tình Hay Nhất Của Dương Tuấn Hải
  type: MusicAlbum
  date published: 2017-04-04
album: Xuân 2017 - Ước Nguyện Đầu Xuân
  type: MusicAlbum
  date published: 2017-07-19
album: Củi Tre Dễ Nấu, Chồng Xấu Dễ Xài
  type: MusicAlbum
  date published: 2019
album: Đành Để Em Đi
  type: MusicAlbum
  date published: 2019-01-03
album: Đam Mê
  type: MusicAlbum
  date published: 2019-01-07
album: Bờ Bến Sông Thương
  type: MusicAlbum
  date published: 2023-10-26
album: Bí Bầu
  type: MusicAlbum
  date published: 2024-02-13
album: Gọi Đò Làm Chi
  type: MusicAlbum
  date published: 2024-02-14