Hữu Long
type: MusicGroup
genre: vinahouse
popularity: 3
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x514d5ef0fcec95878c1cd630977c19215088d7fc485d0f9c5dc82b0307385d82
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/b7dbe6c3-2025-4070-98cb-cabfc064fc50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7dbe6c3-2025-4070-98cb-cabfc064fc50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7dbe6c3-2025-4070-98cb-cabfc064fc50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x514d5ef0fcec95878c1cd630977c19215088d7fc485d0f9c5dc82b0307385d82","name":"Hữu Long","registered_at":"2026-06-20T15:37:17Z","symbol":"NIM1643758","token_address":"0x56b6449cd2f555ca37f925a25b57a035a3dfebbf","type":"artist","uuid":"b7dbe6c3-2025-4070-98cb-cabfc064fc50"}
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 0x514d5ef0fcec95878c1cd630977c19215088d7fc485d0f9c5dc82b0307385d82. 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/b7dbe6c3-2025-4070-98cb-cabfc064fc50.json and https://artists.proofprofile.net/proofs/artist/b7dbe6c3-2025-4070-98cb-cabfc064fc50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x514d5ef0fcec95878c1cd630977c19215088d7fc485d0f9c5dc82b0307385d82","name":"Hữu Long","registered_at":"2026-06-20T15:37:17Z","symbol":"NIM1643758","token_address":"0x56b6449cd2f555ca37f925a25b57a035a3dfebbf","type":"artist","uuid":"b7dbe6c3-2025-4070-98cb-cabfc064fc50"}
album: Lời Yêu Ngày Đó
  type: MusicAlbum
  date published: 2021-03-31
  track: Lời Yêu Ngày Đó - Vinahouse Ver.
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241321
    explicit: false
    by artist: Hữu Long
    in album: Lời Yêu Ngày Đó
      type: MusicAlbum
      date published: 2021-03-31
    genre: vinahouse
    isrc code: FRX452138140
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T11:04:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x81af9ae6d7d6c40cbb58a31407081c988447365a8fe2cba3e6ab6bbd640103db
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958541
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958541
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452138140
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T11:37:54Z
    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 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 0x81af9ae6d7d6c40cbb58a31407081c988447365a8fe2cba3e6ab6bbd640103db. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX452138140.
      date published: 2026-07-18T11:37:54Z
    audio: Lời Yêu Ngày Đó - Vinahouse Ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.052
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.688
      additional property: Energy
        type: PropertyValue
        value: 0.895
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.118
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.37
      additional property: Liveness
        type: PropertyValue
        value: 0.243
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.913
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.887
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cô Gái Khoa Văn
  type: MusicAlbum
  date published: 2022-01-10
album: Cứ Đi Thôi
  type: MusicAlbum
  date published: 2023-02-06
album: Cầu Vồng
  type: MusicAlbum
  date published: 2023-02-13
album: Khi Yêu Thương Không Chỉ Là Lời Nói
  type: MusicAlbum
  date published: 2023-11-06