Hạ Hạ
type: MusicGroup
genre: vinahouse
popularity: 14
followers: 1441
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb96b2dfef21ae98126d25747f17fd47aa184f75f6a89a5bad7e9a0e9b4a7e37
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953633
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953633
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/340e60f3-f3bd-494a-a228-a0a66a6e95ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/340e60f3-f3bd-494a-a228-a0a66a6e95ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/340e60f3-f3bd-494a-a228-a0a66a6e95ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:47:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb96b2dfef21ae98126d25747f17fd47aa184f75f6a89a5bad7e9a0e9b4a7e37","name":"Hạ Hạ","registered_at":"2026-06-14T10:00:06Z","symbol":"NIM0417624","token_address":"0x2351dd6717fe6b3cb025cbeb6bd3189a41a955a1","type":"artist","uuid":"340e60f3-f3bd-494a-a228-a0a66a6e95ca"}
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 0xbb96b2dfef21ae98126d25747f17fd47aa184f75f6a89a5bad7e9a0e9b4a7e37. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/340e60f3-f3bd-494a-a228-a0a66a6e95ca.json and https://artists.proofprofile.net/proofs/artist/340e60f3-f3bd-494a-a228-a0a66a6e95ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
  text: {"copyright_id":"0xbb96b2dfef21ae98126d25747f17fd47aa184f75f6a89a5bad7e9a0e9b4a7e37","name":"Hạ Hạ","registered_at":"2026-06-14T10:00:06Z","symbol":"NIM0417624","token_address":"0x2351dd6717fe6b3cb025cbeb6bd3189a41a955a1","type":"artist","uuid":"340e60f3-f3bd-494a-a228-a0a66a6e95ca"}
album: Là Anh (Remix) - Instrumental
  type: MusicAlbum
  date published: 2023-03-25
album: Là Anh (Remix)
  type: MusicAlbum
  date published: 2023-03-25
album: Là Anh Remix (CO2 Remix)
  type: MusicAlbum
  date published: 2023-05-01
album: Là Anh - Beat
  type: MusicAlbum
  date published: 2023-04-16
album: Là Anh (TK Remix)
  type: MusicAlbum
  date published: 2023-04-07
album: Là Anh
  type: MusicAlbum
  date published: 2023-03-28
album: Là Anh (AnhVu x Thereon Remix)
  type: MusicAlbum
  date published: 2023-03-25
album: Là Anh (Lofi)
  type: MusicAlbum
  date published: 2023-03-24
  track: Là Anh (Lofi)
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184239
    explicit: false
    by artist: Truzg
    by artist: Hạ Hạ
    in album: Là Anh (Lofi)
      type: MusicAlbum
      date published: 2023-03-24
    isrc code: VNA0F2308818
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-07T14:44:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x11ea28877bd9208ecd7af83d27b5a2cd9b8412a594f4f671ddf7b8f12cccecac
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953515
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953515
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2308818
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:53:06Z
    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 0x11ea28877bd9208ecd7af83d27b5a2cd9b8412a594f4f671ddf7b8f12cccecac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/VNA0F2308818.
      date published: 2026-06-13T12:53:06Z
    audio: Là Anh (Lofi)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.59
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.475
      additional property: Energy
        type: PropertyValue
        value: 0.424
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.724
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.387
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.381
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.135
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Chill 1999 Vol.1: Những Bản Ballad Thư Giãn
  type: MusicAlbum
  date published: 2023-09-02
  track: Phía Sau Một Cô Gái
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221598
    explicit: false
    by artist: Jerome Dinh
    by artist: DIMICHI
    in album: Chill 1999 Vol.1: Những Bản Ballad Thư Giãn
      type: MusicAlbum
      date published: 2023-09-02
    isrc code: VNA0F2315316
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-08T15:15:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa8b32d861604ea45abd8edd1fe07f26ebfa640f8c3f8eeb8bc3aac035a30a365
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2315316
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 0xa8b32d861604ea45abd8edd1fe07f26ebfa640f8c3f8eeb8bc3aac035a30a365. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0F2315316.
      date published: 2026-06-13T13:32:09Z
    audio: Phía Sau Một Cô Gái
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.53
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.318

Energy
type: PropertyValue
value: 0.289

Speechiness
type: PropertyValue
value: 0.04

Acousticness
type: PropertyValue
value: 0.366

Instrumentalness
type: PropertyValue
value: 0.011

Liveness
type: PropertyValue
value: 0.146

Valence (Positivity)
type: PropertyValue
value: 0.04

Loudness (dB)
type: PropertyValue
value: -18.232

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor