Khoi Vu
type: MusicGroup
genre: vietnamese hip hop
genre: vietnamese lo-fi
genre: vietnam indie
genre: v-pop
popularity: 42
followers: 46314
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xedf268a9c43ac88d57d48d48ceb1b9655cc38726a5ba4a1dfb2fd6479a54738e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ca5eac8-fac5-4c2e-b2ad-7ee2b048beb7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ca5eac8-fac5-4c2e-b2ad-7ee2b048beb7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8ca5eac8-fac5-4c2e-b2ad-7ee2b048beb7
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0xedf268a9c43ac88d57d48d48ceb1b9655cc38726a5ba4a1dfb2fd6479a54738e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ca5eac8-fac5-4c2e-b2ad-7ee2b048beb7.json and https://artists.proofprofile.net/proofs/artist/8ca5eac8-fac5-4c2e-b2ad-7ee2b048beb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Unfollow
  type: MusicAlbum
  date published: 2019-11-01
album: Tìm Tôi? (Find Me?)
  type: MusicAlbum
  date published: 2020-01-01
  track: Tìm Tôi? (Find Me?)
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187557
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    by artist: Khoi Vu
    in album: Tìm Tôi? (Find Me?)
      type: MusicAlbum
      date published: 2020-01-01
    genre: vietnamese hip hop
    genre: vietnamese lo-fi
    genre: vietnam indie
    genre: v-pop
    isrc code: QMFME2247514
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958448
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2247514
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:49:21Z
    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 0xc5d976131cee7514c85ad881325a2fcda886ee24ef203c0e2d30de51c80072dd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFME2247514.
      date published: 2026-07-17T19:49:21Z
    audio: Tìm Tôi? (Find Me?)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.004
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.816
      additional property: Energy
        type: PropertyValue
        value: 0.554
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.441
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.365
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.767
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
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album: Berlin
  type: MusicAlbum
  date published: 2020-02-12
album: Berlin
  type: MusicAlbum
  date published: 2020-02-12
album: Tm Ti ?
  type: MusicAlbum
  date published: 2020-03-23
album: Tim Toi?
  type: MusicAlbum
  date published: 2020-03-23
album: Em A
  type: MusicAlbum
  date published: 2020-03-24
album: Em A
  type: MusicAlbum
  date published: 2020-03-24
album: Love Pain
  type: MusicAlbum
  date published: 2020-05-15
album: BMAGER
  type: MusicAlbum
  date published: 2020-09-01
  track: BMAGER
    type: MusicRecording
    duration: PT4M11S
    duration ms: 251552
    explicit: false
    by artist: Khoi Vu
    in album: BMAGER
      type: MusicAlbum
      date published: 2020-09-01
    genre: vietnamese hip hop
    genre: vietnamese lo-fi
    genre: vietnam indie
    genre: v-pop
    isrc code: QZMHP2012958
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T18:12:06+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0xc49e352dfb18ea1b47d6d98b3794c6f28c6c68c1733aa26b1dbc0a3bfadbb571
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957891
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2012958
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T18:21:04Z
    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 0xc49e352dfb18ea1b47d6d98b3794c6f28c6c68c1733aa26b1dbc0a3bfadbb571. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMHP2012958.
      date published: 2026-07-13T18:21:04Z
    audio: BMAGER
album: ECYA
album: Vi Da Lo Loi
album: Not About Love
album: Buồn Nhẹ Nhàng Thôi
album: Fantasy
album: Hông Về Tình Iu (Not About Love)
album: Bế Em Lên Cung Trăng (Speed Up)
album: Bế em lên cung trăng
album: NGUYENSIEUER
album: LIES
album: OVER
album: Over
album: OVER (Synth Pop Remix)
album: OVER REMIXES
album: You Know
album: Khoi Vu (HITStory Live Session)

BMAGER
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 96.002
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.766
additional property: Energy
  type: PropertyValue
  value: 0.261
additional property: Speechiness
  type: PropertyValue
  value: 0.142
additional property: Acousticness
  type: PropertyValue
  value: 0.9
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.124
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.482
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.4
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

BMAGER
type: MusicAlbum
date published: 2020-09-11
track: BMAGER
  type: MusicRecording
  duration: PT4M11S
  duration ms: 251552
  explicit: false
  by artist: Khoi Vu
  in album: BMAGER
    type: MusicAlbum
    date published: 2020-09-11
  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
  isrc code: QMDA72262225
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T07:13:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958115
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958115
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72262225
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T10:10:34Z
  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 0xe723591cd2cd7a939b91c82bc2546c69654d0e5d02263caac30a9fae7694de33. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:34Z), 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/QMDA72262225.
    date published: 2026-07-15T10:10:34Z
  audio: BMAGER
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 96.002
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.767
    additional property: Energy
      type: PropertyValue
      value: 0.261
    additional property: Speechiness
      type: PropertyValue
      value: 0.136
    additional property: Acousticness
      type: PropertyValue
      value: 0.899
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.134
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.486
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.363
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

ECYA
type: MusicAlbum
date published: 2021-02-02
track: ECYA
  type: MusicRecording
  duration: PT2M47S
  duration ms: 167620
  explicit: true
  by artist: Khoi Vu
  in album: ECYA
    type: MusicAlbum
    date published: 2021-02-02
  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
  isrc code: QZKDK2122640
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T10:43:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x98a2ef5ed051750fb5b840836decaed5ff5ffe6159c4617563119dba9ff5d3fc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959001
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959001
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2122640
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T13:45:55Z
  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 0x98a2ef5ed051750fb5b840836decaed5ff5ffe6159c4617563119dba9ff5d3fc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:55Z), 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/QZKDK2122640.
    date published: 2026-07-21T13:45:55Z
  audio: ECYA
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 130.039
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.796
    additional property: Energy
      type: PropertyValue
      value: 0.349
    additional property: Speechiness
      type: PropertyValue
      value: 0.055
    additional property: Acousticness
      type: PropertyValue
      value: 0.826
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.078
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.175
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.828
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
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Vi Da Lo Loi
type: MusicAlbum
date published: 2021-05-01

Not About Love
type: MusicAlbum
date published: 2021-09-20

Buồn Nhẹ Nhàng Thôi
type: MusicAlbum
date published: 2021-11-28

Unfollow
type: MusicAlbum
date published: 2021-12-28

Fantasy
type: MusicAlbum
date published: 2022-02-16

Fantasy
type: MusicAlbum
date published: 2022-02-16

Hông Về Tình Iu (Not About Love)
type: MusicAlbum
date published: 2022-04-08

Hông Về Tình Iu (Not About Love)
type: MusicAlbum
date published: 2022-04-08

Fantasy
type: MusicAlbum
date published: 2022-05-20
track: Fantasy
  type: MusicRecording
  duration: PT3M18S
  duration ms: 198857
  explicit: false
  by artist: Khoi Vu
  in album: Fantasy
    type: MusicAlbum
    date published: 2022-05-20
  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
  isrc code: QZFZ72221855
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T02:33:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa109d6b495437611711fce518f297da73cbe2056dcf753a7b00c9918948fb80e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72221855
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T10:04:33Z
  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 0xa109d6b495437611711fce518f297da73cbe2056dcf753a7b00c9918948fb80e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ72221855.
    date published: 2026-07-04T10:04:33Z
  audio: Fantasy
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 125.09
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.764
    additional property: Energy
      type: PropertyValue
      value: 0.415
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.807
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.086
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.537
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.338
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Bế Em Lên Cung Trăng (Speed Up)
type: MusicAlbum
date published: 2022-09-10

Bế em lên cung trăng
type: MusicAlbum
date published: 2022-09-20

NGUYENSIEUER
type: MusicAlbum
date published: 2023-03-10

LIES
type: MusicAlbum
date published: 2023-10-13

OVER
type: MusicAlbum
date published: 2023-11-22

Over
type: MusicAlbum
date published: 2023-11-22

OVER (Synth Pop Remix)
type: MusicAlbum
date published: 2024-01-12
track: OVER (Synth Pop Remix)
  type: MusicRecording
  duration: PT2M14S
  duration ms: 134634
  explicit: true
  by artist: Khoi Vu
  in album: OVER (Synth Pop Remix)
    type: MusicAlbum
    date published: 2024-01-12
  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
  isrc code: USA2P2401382
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-19T04:04:08Z
  audio: OVER (Synth Pop Remix)
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    additional property: Danceability
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OVER REMIXES
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date published: 2024-03-15
track: OVER
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  by artist: Khoi Vu
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    date published: 2024-03-15
  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
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  additional property: OTSVerifyInstructions
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    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
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    date published: 2026-07-02T16:51:38Z
  audio: OVER
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You Know
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date published: 2024-12-05

Khoi Vu (HITStory Live Session)
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date published: 2024-12-30
track: Berlin (HITStory Live Version)
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  genre: vietnamese hip hop
  genre: vietnamese lo-fi
  genre: vietnam indie
  genre: v-pop
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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 0x8f0d9f167b617fb0f1d218d1b3291f3f439d165b768d5f3449889142fa5b1b92. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92588276.
    date published: 2026-07-05T10:59:37Z
  audio: Berlin (HITStory Live Version)
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