Nguyen Van Chung
type: MusicGroup
genre: vietnamese bolero
genre: vinahouse
genre: v-pop
popularity: 36
followers: 2924
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953407
additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a7d1794-0c1c-4710-9a60-eed1c1e89c04.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/1a7d1794-0c1c-4710-9a60-eed1c1e89c04.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a7d1794-0c1c-4710-9a60-eed1c1e89c04
additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950fd36eef4c55111188e44d44b5193c1a2b9f2d580de06ce4e743138490b3e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a7d1794-0c1c-4710-9a60-eed1c1e89c04.json and https://artists.proofprofile.net/proofs/artist/1a7d1794-0c1c-4710-9a60-eed1c1e89c04.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
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album: Romantic Moments
  type: MusicAlbum
  date published: 2009-06-12
album: Best Duet
  type: MusicAlbum
  date published: 2009-06-12
album: Top Hits 1
  type: MusicAlbum
  date published: 2009-06-12
album: Tri Kỷ
  type: MusicAlbum
  date published: 2009-09-02
album: Chung Tung
  type: MusicAlbum
  date published: 2010-01-01
album: With Cao Thai Son
  type: MusicAlbum
  date published: 2010-01-01
album: Bức Tranh Trong Tim
  type: MusicAlbum
  date published: 2011
album: Gia Đình Nhỏ, Hạnh Phúc To (My Family)
  type: MusicAlbum
  date published: 2012
  track: Con Gái Nhỏ Của Ba
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200333
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    by artist: Nguyen Van Chung
    in album: Gia Đình Nhỏ, Hạnh Phúc To (My Family)
      type: MusicAlbum
      date published: 2012
    genre: vietnamese bolero
    genre: vinahouse
    genre: v-pop
    isrc code: SGUM72200547
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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      value: 2026-07-18T08:16:02+00:00
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958523
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958523
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGUM72200547
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T08:54:12Z
    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 0x7625a4b0640ab8cc9557e1d3a4d80e7e2113496defb586c33d589d794fed7b88. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGUM72200547 — a six-check JSON result.
      date published: 2026-07-18T08:54:12Z
    audio: Con Gái Nhỏ Của Ba
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.99
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
        value: 0.683
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.598
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.554
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.676
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Gia Đình Nhỏ Hạnh Phúc To
    type: MusicRecording
    duration: PT4M36S
    duration ms: 276666
    explicit: false
    by artist: Nguyen Van Chung
    in album: Gia Đình Nhỏ, Hạnh Phúc To (My Family)
      type: MusicAlbum
      date published: 2012
    genre: vietnamese bolero
    genre: vinahouse
    genre: v-pop
    isrc code: VNR011022984
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    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T02:46:27+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0xd40014912e61dd43f548b5b7b2d99a30a1cad36e9c50fe72723b17b0f3be1e5e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011022984
    additional property: OTSTimestamp
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      value: 2026-07-19T03:36:41Z
    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 0xd40014912e61dd43f548b5b7b2d99a30a1cad36e9c50fe72723b17b0f3be1e5e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011022984 — a six-check JSON result.
      date published: 2026-07-19T03:36:41Z
    audio: Gia Đình Nhỏ Hạnh Phúc To
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.021
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
      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)
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      additional property: Mode Name
album: Ký Ức Về Em
album: Cha Và Con Gái
album: Nguyen Van Chung Collection
album: Cuốn Tiểu Thuyết Buồn - Phần 1
album: Cuốn Tiểu Thuyết Buồn - Phần 2
album: Vườn Hoa Sao Rơi
album: Melodies Of Love
album: My Stories
album: Bài Hát Của Mưa
album: Viết Cho Những Ngày Mưa
album: Con Nợ Mẹ
album: Ngủ Đi Con
album: Trái Tim Của Gió
album: Chung 36: Tình Khúc Nguyễn Văn Chung
album: Cười Và Khóc
album: Dù Em Không Phải Thiên Thần
album: Mẹ Ơi Con Muốn Về Nhà
album: Mong Anh Luôn Hạnh Phúc
album: Mưa Của Ngày Xưa
album: Nụ Cười Đắng
album: Điều Em Lo Sợ
album: Đi Ngược Chiều Thương
album: My Memories
album: Hôm Nay Anh Rất Mệt
album: Ngày Mai Lại Tươi Sáng
album: Heal Me
album: Cô Đơn Trong Nhà Mình (Guitar)
album: Tết Sang
album: Ước Có Người Bên Tôi Mỗi Khi Buồn
album: Ngày Hôm Nay Tôi Mất Một Người Bạn
album: Mộng Thủy Tinh
album: Vầng Trăng Khóc
album: ON THE WAY HOME (Âm nhạc chữa lành xoa dịu tâm hồn)
album: Ai Hiểu Cho Mình
album: Tôi Muốn Một Mình (Lofi Ver.)
album: Mưa (Lofi Ver.)
album: Nhật Ký Của Mẹ
album: On The Way Home
album: Sau Những Ngày Hạnh Phúc
album: Tỏ Tình Ở Đà Lạt
album: Thích Thì Tỏ Tình
album: Thư Lê #1: Em Đợi Anh
album: Thư Lê #2: Bên Kia Bán Cầu
album: Người Thầy Năm Xưa
album: Cơn Mưa Nhỏ Và Nắng
album: Nhạc Thiếu Nhi - P2: Bố Ơi Kể Chuyện Con Nghe
album: Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
album: Nhạc Thiếu Nhi - P3: Bé Vui Noel
album: Nhạc Thiếu Nhi - P4: Ông Già Noel Là Bố
album: Nhạc Thiếu Nhi - P5: Vui Đến Trường
album: Tu Tại Tâm Ta
album: Anh Đã Quên Cô Ta Chưa (Lofi Version)
album: Nhạc Thiếu Nhi - P6: Bé chơi Trung Thu
album: Nhạc Thiếu Nhi - P7: Bé đón Tết sang

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.641

Energy
type: PropertyValue
value: 0.456

Speechiness
type: PropertyValue
value: 0.026

Acousticness
type: PropertyValue
value: 0.568

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.14

Valence (Positivity)
type: PropertyValue
value: 0.242

Loudness (dB)
type: PropertyValue
value: -6.181

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Minor

Ký Ức Về Em
type: MusicAlbum
date published: 2012-09-03

Cha Và Con Gái
type: MusicAlbum
date published: 2012-09-09

Nguyen Van Chung Collection
type: MusicAlbum
date published: 2012-09-29

Cuốn Tiểu Thuyết Buồn - Phần 1
type: MusicAlbum
date published: 2013

Cuốn Tiểu Thuyết Buồn - Phần 2
type: MusicAlbum
date published: 2015

Vườn Hoa Sao Rơi
type: MusicAlbum
date published: 2015

Melodies Of Love
type: MusicAlbum
date published: 2015

My Stories
type: MusicAlbum
date published: 2015

Bài Hát Của Mưa
type: MusicAlbum
date published: 2015-05-28

My Stories
type: MusicAlbum
date published: 2015-10-01

My Stories
type: MusicAlbum
date published: 2015-10-01

Viết Cho Những Ngày Mưa
type: MusicAlbum
date published: 2016

Con Nợ Mẹ
type: MusicAlbum
date published: 2017
track: Con Nợ Mẹ
  type: MusicRecording
  duration: PT4M48S
  duration ms: 288600
  explicit: false
  by artist: Nguyen Van Chung
  in album: Con Nợ Mẹ
    type: MusicAlbum
    date published: 2017
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: QMDA71585580
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T01:41:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5b85ebacc8266e8b78626826116bff09d91e3a502bf8d5189fb530f161011833
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958224
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71585580
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T02:28:43Z
  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 0x5b85ebacc8266e8b78626826116bff09d91e3a502bf8d5189fb530f161011833. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71585580 — a six-check JSON result.
    date published: 2026-07-16T02:28:43Z
  audio: Con Nợ Mẹ
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.357
    additional property: Energy
      type: PropertyValue
      value: 0.426
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.867
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.155
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.308
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.977
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
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Ngủ Đi Con
type: MusicAlbum
date published: 2018-09-30

Trái Tim Của Gió
type: MusicAlbum
date published: 2019
track: Tiếng Dương Cầm Trong Đêm - Acoustic
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293397
  explicit: false
  by artist: Nguyen Van Chung
  in album: Trái Tim Của Gió
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082308572
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T03:09:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x634d073b55b93d06933e39d8a9c81f3ff9e53a6dee916e3869338e60def0f295
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308572
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T08:56:35Z
  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 0x634d073b55b93d06933e39d8a9c81f3ff9e53a6dee916e3869338e60def0f295. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308572 — a six-check JSON result.
    date published: 2026-07-03T08:56:35Z
  audio: Tiếng Dương Cầm Trong Đêm - Acoustic
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 75.055
    additional property: Musical Key
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      value: 8
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.596
    additional property: Energy
      type: PropertyValue
      value: 0.234
    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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Chung 36: Tình Khúc Nguyễn Văn Chung
type: MusicAlbum
date published: 2019
track: Mùa Thu Năm Ấy
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  duration: PT6M14S
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  by artist: Nguyen Van Chung
  in album: Chung 36: Tình Khúc Nguyễn Văn Chung
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA092369926
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T14:29:58+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xcfca124bc20ab95631a413ca679838882f0683accfdbc5624022116f44a535f7
  additional property: OTSHash
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    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092369926
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xcfca124bc20ab95631a413ca679838882f0683accfdbc5624022116f44a535f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092369926 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Mùa Thu Năm Ấy
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.742
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.311
    additional property: Energy
      type: PropertyValue
      value: 0.288
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.929
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.091
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.325
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.951
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Tình Sao Cay Đắng
  type: MusicRecording
  duration: PT5M21S
  duration ms: 321622
  explicit: false
  by artist: Nguyen Van Chung
  in album: Chung 36: Tình Khúc Nguyễn Văn Chung
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA092369928
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T21:24:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x69a44bb815777b294b57a87a8efee947db79319c43d8cb77dea5f25982711b01
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092369928
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x69a44bb815777b294b57a87a8efee947db79319c43d8cb77dea5f25982711b01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092369928 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Tình Sao Cay Đắng
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 150.414
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.421
    additional property: Energy
      type: PropertyValue
      value: 0.368
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.863
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.115
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.16
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.932
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Cười Và Khóc
type: MusicAlbum
date published: 2019

Dù Em Không Phải Thiên Thần
type: MusicAlbum
date published: 2019
track: Món Quà Vô Giá
  type: MusicRecording
  duration: PT4M26S
  duration ms: 266069
  explicit: false
  by artist: Nguyen Van Chung
  in album: Dù Em Không Phải Thiên Thần
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082347348
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T12:24:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x439e3f59c4cc9d432f951ed6f3d59b677313c58ed7f364c188b87a3c368e606f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082347348
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0x439e3f59c4cc9d432f951ed6f3d59b677313c58ed7f364c188b87a3c368e606f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082347348 — a six-check JSON result.
    date published: 2026-07-05T01:12:41Z
  audio: Món Quà Vô Giá
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 92.943
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.739
    additional property: Energy
      type: PropertyValue
      value: 0.196
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.972
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.117
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.471
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.823
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

Mẹ Ơi Con Muốn Về Nhà
type: MusicAlbum
date published: 2019
track: Lời Hứa Của Cha
  type: MusicRecording
  duration: PT5M43S
  duration ms: 343829
  explicit: false
  by artist: Nguyen Van Chung
  in album: Mẹ Ơi Con Muốn Về Nhà
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082346034
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T14:10:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd6071cbab4ac2b70bb977fa850c2b4e90a4d8fd8e0f0b14b11de1719f7ecb70a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958428
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958428
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082346034
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T15:15:14Z
  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 0xd6071cbab4ac2b70bb977fa850c2b4e90a4d8fd8e0f0b14b11de1719f7ecb70a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082346034 — a six-check JSON result.
    date published: 2026-07-17T15:15:14Z
  audio: Lời Hứa Của Cha
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.926
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.536
    additional property: Energy
      type: PropertyValue
      value: 0.386
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.914
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.109
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.209
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.663
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Mong Anh Luôn Hạnh Phúc
type: MusicAlbum
date published: 2019
track: Bức Tranh Trong Tim
  type: MusicRecording
  duration: PT3M26S
  duration ms: 206077
  explicit: false
  by artist: Nguyen Van Chung
  in album: Mong Anh Luôn Hạnh Phúc
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082312129
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T13:30:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x96579aeb62478e4d86e2cb26ed8d8b627d778e22ea3de70abcae1c2145bc5887
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958897
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958897
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082312129
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T14:57:46Z
  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 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 0x96579aeb62478e4d86e2cb26ed8d8b627d778e22ea3de70abcae1c2145bc5887. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082312129 — a six-check JSON result.
    date published: 2026-07-20T14:57:46Z
  audio: Bức Tranh Trong Tim
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.591
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.622
    additional property: Energy
      type: PropertyValue
      value: 0.304
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.924
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.212
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.249
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.843
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Mưa Của Ngày Xưa
type: MusicAlbum
date published: 2019

Nụ Cười Đắng
type: MusicAlbum
date published: 2019

Điều Em Lo Sợ
type: MusicAlbum
date published: 2019
track: Đêm Trăng Tình Yêu - Acoustic
  type: MusicRecording
  duration: PT5M5S
  duration ms: 305086
  explicit: false
  by artist: Nguyen Van Chung
  in album: Điều Em Lo Sợ
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082308579
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T13:37:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcaa620d8ac3cacf181f1ba1a6ae86b8c81f0c69ab076d7aa49ea8fbf3b6336a1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958897
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958897
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308579
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T14:57:46Z
  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 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 0xcaa620d8ac3cacf181f1ba1a6ae86b8c81f0c69ab076d7aa49ea8fbf3b6336a1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308579 — a six-check JSON result.
    date published: 2026-07-20T14:57:46Z
  audio: Đêm Trăng Tình Yêu - Acoustic
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.968
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.652
    additional property: Energy
      type: PropertyValue
      value: 0.324
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.955
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.224
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.423
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.167
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Mộng Thủy Tinh - Acoustic
  type: MusicRecording
  duration: PT5M3S
  duration ms: 303040
  explicit: false
  by artist: Nguyen Van Chung
  in album: Điều Em Lo Sợ
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082308580
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T15:33:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2f3f7dace7be100b142b613ccfb7fca0a050168dc88ff5ef3812be8ca4c52d5e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958905
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958905
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308580
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T16:14:34Z
  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 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 0x2f3f7dace7be100b142b613ccfb7fca0a050168dc88ff5ef3812be8ca4c52d5e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308580 — a six-check JSON result.
    date published: 2026-07-20T16:14:34Z
  audio: Mộng Thủy Tinh - Acoustic
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.884
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.728
    additional property: Energy
      type: PropertyValue
      value: 0.148
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.951
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.076
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.25
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.984
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Cánh Chim Hải Âu - Acoustic
  type: MusicRecording
  duration: PT4M47S
  duration ms: 287463
  explicit: false
  by artist: Nguyen Van Chung
  in album: Điều Em Lo Sợ
    type: MusicAlbum
    date published: 2019
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA082308592
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T09:00:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1c45fcadc6a4965b5d5a2d32a65022d8bee3c19d299e357f647e5be24afee5a3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Cánh Chim Hải Âu - Acoustic

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956482

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956482

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308592

OTSTimestamp
type: PropertyValue
value: 2026-07-03T10:33:57Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c45fcadc6a4965b5d5a2d32a65022d8bee3c19d299e357f647e5be24afee5a3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082308592 — a six-check JSON result.
date published: 2026-07-03T10:33:57Z

Cánh Chim Hải Âu - Acoustic
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 140.006
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.51
additional property: Energy
  type: PropertyValue
  value: 0.293
additional property: Speechiness
  type: PropertyValue
  value: 0.029
additional property: Acousticness
  type: PropertyValue
  value: 0.948
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.117
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.32
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.71
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

Đi Ngược Chiều Thương
type: MusicAlbum
date published: 2019-09-14

My Memories
type: MusicAlbum
date published: 2020
track: Dây Thường Xuân Xanh Biếc
  type: MusicRecording
  duration: PT4M13S
  duration ms: 253570
  explicit: false
  by artist: Nguyen Van Chung
  in album: My Memories
    type: MusicAlbum
    date published: 2020
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: VNR011023084
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T10:48:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x65b888d74cbb1c10a5970b17323876fb40308407686724d4cd22bc043141bd8d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958721
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958721
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011023084
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T11:02:33Z
  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 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 0x65b888d74cbb1c10a5970b17323876fb40308407686724d4cd22bc043141bd8d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011023084 — a six-check JSON result.
    date published: 2026-07-19T11:02:33Z
  audio: Dây Thường Xuân Xanh Biếc
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.967
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.581
    additional property: Energy
      type: PropertyValue
      value: 0.441
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.384
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.073
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.117
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.77
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor

My Memories
type: MusicAlbum
date published: 2020-01-01
track: Điều Em Lo Sợ
  type: MusicRecording
  duration: PT3M42S
  duration ms: 222840
  explicit: false
  by artist: Nguyen Van Chung
  in album: My Memories
    type: MusicAlbum
    date published: 2020-01-01
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: QMDA72295594
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T01:29:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf91a785d88b83aa6a30c18d895e94dd2d4037384bc9851e51454512f9892336b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72295594
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T08:56:35Z
  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 0xf91a785d88b83aa6a30c18d895e94dd2d4037384bc9851e51454512f9892336b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72295594 — a six-check JSON result.
    date published: 2026-07-03T08:56:35Z
  audio: Điều Em Lo Sợ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.993
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.606
    additional property: Energy
      type: PropertyValue
      value: 0.656
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.392
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.379
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.435
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.519
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Hôm Nay Anh Rất Mệt
type: MusicAlbum
date published: 2020-07-28

Hôm Nay Anh Rất Mệt
type: MusicAlbum
date published: 2020-07-28

Hôm Nay Anh Rất Mệt
type: MusicAlbum
date published: 2020-07-28

Ngày Mai Lại Tươi Sáng
type: MusicAlbum
date published: 2020-08-18

Heal Me
type: MusicAlbum
date published: 2020-08-27

Cô Đơn Trong Nhà Mình (Guitar)
type: MusicAlbum
date published: 2020-09-07

Tết Sang
type: MusicAlbum
date published: 2020-09-22
track: Tết Sang
  type: MusicRecording
  duration: PT3M58S
  duration ms: 238344
  explicit: false
  by artist: Nguyen Van Chung
  in album: Tết Sang
    type: MusicAlbum
    date published: 2020-09-22
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0R2320944
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T15:37:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc15f72ebbe0858317527b7c7e92b45bcab0be1f193a322d23b5744b98e1d810c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958905
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958905
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0R2320944
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T16:14:34Z
  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 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 0xc15f72ebbe0858317527b7c7e92b45bcab0be1f193a322d23b5744b98e1d810c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0R2320944 — a six-check JSON result.
    date published: 2026-07-20T16:14:34Z
  audio: Tết Sang
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.889
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.715
    additional property: Energy
      type: PropertyValue
      value: 0.73
    additional property: Speechiness
      type: PropertyValue
      value: 0.081
    additional property: Acousticness
      type: PropertyValue
      value: 0.63
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.182
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.516
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.532
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Ước Có Người Bên Tôi Mỗi Khi Buồn
type: MusicAlbum
date published: 2021-09-05
track: Hôm Nay Anh Rất Mệt
  type: MusicRecording
  duration: PT5M3S
  duration ms: 303774
  explicit: false
  by artist: Nguyen Van Chung
  in album: Ước Có Người Bên Tôi Mỗi Khi Buồn
    type: MusicAlbum
    date published: 2021-09-05
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: VNA0M1908074
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T22:55:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xaa26b3e27633f2fb80c1647c1c526291855314135a95486be05c08f0ac48224a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1908074
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0xaa26b3e27633f2fb80c1647c1c526291855314135a95486be05c08f0ac48224a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1908074 — a six-check JSON result.
    date published: 2026-07-06T01:25:57Z
  audio: Hôm Nay Anh Rất Mệt
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 79.048
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.654
    additional property: Energy
      type: PropertyValue
      value: 0.249
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.939
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.013
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.452
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.655
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Cha Và Con Gái
type: MusicAlbum
date published: 2021-09-10

Ngày Hôm Nay Tôi Mất Một Người Bạn
type: MusicAlbum
date published: 2022-04-06

Mộng Thủy Tinh
type: MusicAlbum
date published: 2022-11-22

Vầng Trăng Khóc
type: MusicAlbum
date published: 2022-12-05

ON THE WAY HOME (Âm nhạc chữa lành xoa dịu tâm hồn)
type: MusicAlbum
date published: 2023-01-02

Ai Hiểu Cho Mình
type: MusicAlbum
date published: 2023-04-05

Tôi Muốn Một Mình (Lofi Ver.)
type: MusicAlbum
date published: 2023-04-09

Mưa (Lofi Ver.)
type: MusicAlbum
date published: 2023-07-09

Nhật Ký Của Mẹ
type: MusicAlbum
date published: 2023-08-09

Nhật Ký Của Mẹ
type: MusicAlbum
date published: 2023-08-09

Nhật Ký Của Mẹ
type: MusicAlbum
date published: 2023-08-09

On The Way Home
type: MusicAlbum
date published: 2023-08-13

Sau Những Ngày Hạnh Phúc
type: MusicAlbum
date published: 2023-08-21

Tỏ Tình Ở Đà Lạt
type: MusicAlbum
date published: 2023-08-22

Thích Thì Tỏ Tình
type: MusicAlbum
date published: 2023-08-24

Thư Lê #1: Em Đợi Anh
type: MusicAlbum
date published: 2023-08-25

Thư Lê #2: Bên Kia Bán Cầu
type: MusicAlbum
date published: 2023-08-26

Người Thầy Năm Xưa
type: MusicAlbum
date published: 2023-08-27

Cơn Mưa Nhỏ Và Nắng
type: MusicAlbum
date published: 2023-08-28

Nhạc Thiếu Nhi - P2: Bố Ơi Kể Chuyện Con Nghe
type: MusicAlbum
date published: 2023-09-01

Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
type: MusicAlbum
date published: 2023-09-01
track: Mẹ Ơi Có Biết
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200561
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
    type: MusicAlbum
    date published: 2023-09-01
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0M2389216
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T18:58:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe70258458da6c41842a7ce2d47e599b68dc1b9859c114714ecef4a3fec6c9a3c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958194
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958194
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389216
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T20:32:27Z
  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 0xe70258458da6c41842a7ce2d47e599b68dc1b9859c114714ecef4a3fec6c9a3c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389216 — a six-check JSON result.
    date published: 2026-07-15T20:32:27Z
  audio: Mẹ Ơi Có Biết
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.08
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.418
    additional property: Energy
      type: PropertyValue
      value: 0.438
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.5
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.072
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.305
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.323
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Bà Ơi
  type: MusicRecording
  duration: PT3M58S
  duration ms: 238643
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
    type: MusicAlbum
    date published: 2023-09-01
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0M2389217
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T01:33:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xba8fb07f1641b7ca66ce866745a9e535ebd44871bae02f8e40f9fc685462210c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958224
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958224
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389217
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T02:28:43Z
  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 0xba8fb07f1641b7ca66ce866745a9e535ebd44871bae02f8e40f9fc685462210c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389217 — a six-check JSON result.
    date published: 2026-07-16T02:28:43Z
  audio: Bà Ơi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 163.339
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.379
    additional property: Energy
      type: PropertyValue
      value: 0.46
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.826
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.287
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.263
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.069
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Bà Ôm Vào Lòng
  type: MusicRecording
  duration: PT3M27S
  duration ms: 207281
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
    type: MusicAlbum
    date published: 2023-09-01
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0M2389218
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T06:28:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc8ecb298a40b40d61e242be781129b24af0f84f6ca8cd49d3c11c111ad9d750a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Bà Ôm Vào Lòng
track: Anh Hai

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956772

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956772

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389218

OTSTimestamp
type: PropertyValue
value: 2026-07-05T10:01:46Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ecb298a40b40d61e242be781129b24af0f84f6ca8cd49d3c11c111ad9d750a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389218 — a six-check JSON result.
date published: 2026-07-05T10:01:46Z

Bà Ôm Vào Lòng
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 208.122
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: 0.336
additional property: Energy
  type: PropertyValue
  value: 0.38
additional property: Speechiness
  type: PropertyValue
  value: 0.059
additional property: Acousticness
  type: PropertyValue
  value: 0.539
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.078
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.221
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.816
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Anh Hai
type: MusicRecording
duration: PT3M41S
duration ms: 221888
explicit: false
by artist: Nguyen Van Chung
in album: Nhạc Thiếu Nhi - P1: Gia Đình Nhỏ - Hạnh Phúc To
  type: MusicAlbum
  date published: 2023-09-01
genre: vietnamese bolero
genre: vinahouse
genre: v-pop
isrc code: DGA0M2389221
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T13:04:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64256b867456905bbe7969b56735470709812857179e01e2627edcea93e775b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956545
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956545
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389221
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T19:59:51Z
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 0x64256b867456905bbe7969b56735470709812857179e01e2627edcea93e775b0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2389221 — a six-check JSON result.
  date published: 2026-07-03T19:59:51Z
audio: Anh Hai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.995
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.739
  additional property: Energy
    type: PropertyValue
    value: 0.574
  additional property: Speechiness
    type: PropertyValue
    value: 0.026
  additional property: Acousticness
    type: PropertyValue
    value: 0.27
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.297
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.53
  additional property: Loudness (dB)
    type: PropertyValue
    value: -4.665
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Nhạc Thiếu Nhi - P3: Bé Vui Noel
type: MusicAlbum
date published: 2023-09-02

Nhạc Thiếu Nhi - P4: Ông Già Noel Là Bố
type: MusicAlbum
date published: 2023-09-03

Nhạc Thiếu Nhi - P5: Vui Đến Trường
type: MusicAlbum
date published: 2023-09-04
track: Vui Đến Trường
  type: MusicRecording
  duration: PT2M56S
  duration ms: 176534
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nhạc Thiếu Nhi - P5: Vui Đến Trường
    type: MusicAlbum
    date published: 2023-09-04
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0Q2332507
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T17:20:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2af4d481f4e833e27a8eb3db81fd8b0e8cc4a612db314b4018b4665bd1d0b574
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958761
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958761
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2332507
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T17:49:48Z
  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 0x2af4d481f4e833e27a8eb3db81fd8b0e8cc4a612db314b4018b4665bd1d0b574. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2332507 — a six-check JSON result.
    date published: 2026-07-19T17:49:48Z
  audio: Vui Đến Trường
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 165.074
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.757
    additional property: Energy
      type: PropertyValue
      value: 0.859
    additional property: Speechiness
      type: PropertyValue
      value: 0.151
    additional property: Acousticness
      type: PropertyValue
      value: 0.195
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.052
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.79
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.233
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Tu Tại Tâm Ta
type: MusicAlbum
date published: 2023-09-04

Anh Đã Quên Cô Ta Chưa (Lofi Version)
type: MusicAlbum
date published: 2023-09-06

Nhạc Thiếu Nhi - P6: Bé chơi Trung Thu
type: MusicAlbum
date published: 2023-09-06

Nhạc Thiếu Nhi - P7: Bé đón Tết sang
type: MusicAlbum
date published: 2023-09-07

Cô Đơn Trong Nhà Mình
type: MusicAlbum
date published: 2023-09-08
track: Cô Đơn Trong Nhà Mình - Lofi Ver.
  type: MusicRecording
  duration: PT4M56S
  duration ms: 296375
  explicit: false
  by artist: Nguyen Van Chung
  in album: Cô Đơn Trong Nhà Mình
    type: MusicAlbum
    date published: 2023-09-08
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0Q2344999
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T16:17:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfe9241b163d8807edb8fb44c830c009b1ec157be647e5c3286dafb7c71d3c3e8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958579
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958579
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2344999
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T16:26:17Z
  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 0xfe9241b163d8807edb8fb44c830c009b1ec157be647e5c3286dafb7c71d3c3e8. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2344999 — a six-check JSON result.
    date published: 2026-07-18T16:26:17Z
  audio: Cô Đơn Trong Nhà Mình - Lofi Ver.
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 74.97
    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: 0.599
    additional property: Energy
      type: PropertyValue
      value: 0.072
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.908
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.217
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.243
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.093
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Nhạc Thiếu Nhi - P8: Mẹ ơi Tết là gì?
type: MusicAlbum
date published: 2023-09-08

Như Giấc Mơ Buồn
type: MusicAlbum
date published: 2023-09-11

Bí Mật Cuối Cùng Của Em
type: MusicAlbum
date published: 2023-09-12

Đừng Buồn Vì Ly Hôn
type: MusicAlbum
date published: 2023-09-12

Duyên Quỳnh Remix
type: MusicAlbum
date published: 2023-09-17

Thanh Goll Remix, Pt. 1
type: MusicAlbum
date published: 2023-09-19

Thanh Goll Remix, Pt. 2
type: MusicAlbum
date published: 2023-09-20

Em Đợi Anh (Lofi Version)
type: MusicAlbum
date published: 2023-09-23

Những Điều Mẹ Chưa Kể
type: MusicAlbum
date published: 2023-11-20
track: Dắt Mẹ Đi Khắp Thế Gian
  type: MusicRecording
  duration: PT5M0S
  duration ms: 300055
  explicit: false
  by artist: Nguyen Van Chung
  in album: Những Điều Mẹ Chưa Kể
    type: MusicAlbum
    date published: 2023-11-20
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0P2325878
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T17:39:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x498eefe9ae3e217a526f91773d82d3287180710e3c26022b03228ae2e60511b7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956551
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956551
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0P2325878
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T21:18:05Z
  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 0x498eefe9ae3e217a526f91773d82d3287180710e3c26022b03228ae2e60511b7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0P2325878 — a six-check JSON result.
    date published: 2026-07-03T21:18:05Z
  audio: Dắt Mẹ Đi Khắp Thế Gian
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 115.788
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.558
    additional property: Energy
      type: PropertyValue
      value: 0.058
    additional property: Speechiness
      type: PropertyValue
      value: 0.049
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.818
    additional property: Liveness
      type: PropertyValue
      value: 0.154
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.674
    additional property: Key Name
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      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Như Thùy Remix: Bay Giữa Ngân Hà
type: MusicAlbum
date published: 2023-11-21

Viết Tiếp Câu Chuyện Hòa Bình
type: MusicAlbum
date published: 2023-12-21
track: Trường Sa Ca
  type: MusicRecording
  duration: PT3M52S
  duration ms: 232002
  explicit: false
  by artist: Nguyen Van Chung
  in album: Viết Tiếp Câu Chuyện Hòa Bình
    type: MusicAlbum
    date published: 2023-12-21
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0Q2307500
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-29T21:48:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe536875e688110766caee1d267f261a187c5fb9f50b3987f5ef0dbde22d4a491
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956375
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956375
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2307500
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T16:51:38Z
  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 0xe536875e688110766caee1d267f261a187c5fb9f50b3987f5ef0dbde22d4a491. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2307500 — a six-check JSON result.
    date published: 2026-07-02T16:51:38Z
  audio: Trường Sa Ca
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 140.243
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.468
    additional property: Energy
      type: PropertyValue
      value: 0.717
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.245
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.309
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.283
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.33
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Quốc Kỳ Nơi Đảo Xa
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211627
  explicit: false
  by artist: Nguyen Van Chung
  in album: Viết Tiếp Câu Chuyện Hòa Bình
    type: MusicAlbum
    date published: 2023-12-21
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0Q2307508
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T17:31:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9e7adef95249259285a6b5d0a420d0eda3b71ad0ac3ed320606e37b0d037a7f3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957891
  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/DGA0Q2307508
  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 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 0x9e7adef95249259285a6b5d0a420d0eda3b71ad0ac3ed320606e37b0d037a7f3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2307508 — a six-check JSON result.
    date published: 2026-07-13T18:21:04Z
  audio: Quốc Kỳ Nơi Đảo Xa
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 149.819
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.438
    additional property: Energy
      type: PropertyValue
      value: 0.879
    additional property: Speechiness
      type: PropertyValue
      value: 0.161
    additional property: Acousticness
      type: PropertyValue
      value: 0.007
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.339
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.419
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.575
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Tử Vi Năm Mới
type: MusicAlbum
date published: 2023-12-25

Bờ Vai Quá Khứ (Lofi Ver.)
type: MusicAlbum
date published: 2024-02-27

Lá Vàng Và Gió (Lofi Ver.)
type: MusicAlbum
date published: 2024-02-28

Cây Thông Giáng Sinh Đẹp Nhất (Lofi Ver.)
type: MusicAlbum
date published: 2024-03-08

Raplove 8x9x, Vol. 4
type: MusicAlbum
date published: 2024-04-01

Piano beat - Phần 1
type: MusicAlbum
date published: 2024-04-10

Sống Ảo Như Siêu Sao
type: MusicAlbum
date published: 2024-04-11

Thư Gửi Cha
type: MusicAlbum
date published: 2024-04-14

Tu Tại Tâm Ta
type: MusicAlbum
date published: 2024-04-15

Nhạc Thiếu Nhi - P9: Sinh Nhật Của Bé
type: MusicAlbum
date published: 2024-04-16

Yêu Thương Phai Màu
type: MusicAlbum
date published: 2024-04-16

Em Chỉ Yêu Một Người
type: MusicAlbum
date published: 2024-04-16

Hoa Anh Đào Trong Gió (Piano version)
type: MusicAlbum
date published: 2024-04-16

Viết Tiếp Câu Chuyện Hòa Bình (Epic)
type: MusicAlbum
date published: 2024-04-19

Raplove 8x9x, Vol. 5
type: MusicAlbum
date published: 2024-04-22
track: Ngỡ Như Giấc Mơ
  type: MusicRecording
  duration: PT3M48S
  duration ms: 228094
  explicit: false
  by artist: Nguyen Van Chung
  in album: Raplove 8x9x, Vol. 5
    type: MusicAlbum
    date published: 2024-04-22
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0L2468224
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T01:42:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc5712b08b5ff4bd5716dcabed87a7104775484cce4fece1265c7105d9aa61828
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2468224
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xc5712b08b5ff4bd5716dcabed87a7104775484cce4fece1265c7105d9aa61828. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2468224 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Ngỡ Như Giấc Mơ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 122.041
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.783
    additional property: Energy
      type: PropertyValue
      value: 0.553
    additional property: Speechiness
      type: PropertyValue
      value: 0.108
    additional property: Acousticness
      type: PropertyValue
      value: 0.715
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.129
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.703
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.998
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major

Raplove 8x9x, Vol. 6
type: MusicAlbum
date published: 2024-04-23
track: Mừng Sinh Nhật Của Em
  type: MusicRecording
  duration: PT4M14S
  duration ms: 254492
  explicit: false
  by artist: Nguyen Van Chung
  in album: Raplove 8x9x, Vol. 6
    type: MusicAlbum
    date published: 2024-04-23
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0L2468212
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T21:08:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9a4e8dbe75b61a45701e83a50036014e6d062d0a03c16c409af35bf8888eddc5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960468
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960468
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2468212
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T21:25:57Z
  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 0x9a4e8dbe75b61a45701e83a50036014e6d062d0a03c16c409af35bf8888eddc5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2468212 — a six-check JSON result.
    date published: 2026-07-31T21:25:57Z
  audio: Mừng Sinh Nhật Của Em
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 149.292
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.649
    additional property: Energy
      type: PropertyValue
      value: 0.544
    additional property: Speechiness
      type: PropertyValue
      value: 0.06
    additional property: Acousticness
      type: PropertyValue
      value: 0.683
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.088
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.572
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.562
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Cô Đơn Trong Nhà Mình (Beat)
type: MusicAlbum
date published: 2024-04-24

Con Đường Mưa (Lofi version)
type: MusicAlbum
date published: 2024-04-26
track: Ngôi Nhà Hoa Hồng - Lofi
  type: MusicRecording
  duration: PT4M5S
  duration ms: 245853
  explicit: false
  by artist: Nguyen Van Chung
  in album: Con Đường Mưa (Lofi version)
    type: MusicAlbum
    date published: 2024-04-26
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0L2473071
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T06:57:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdb0add9bf46b2b19a44968fbfd54f209bdfefc56a5333175fd65143f752c3094
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958846
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958846
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2473071
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T08:14:15Z
  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 0xdb0add9bf46b2b19a44968fbfd54f209bdfefc56a5333175fd65143f752c3094. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2473071 — a six-check JSON result.
    date published: 2026-07-20T08:14:15Z
  audio: Ngôi Nhà Hoa Hồng - Lofi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.996
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.697
    additional property: Energy
      type: PropertyValue
      value: 0.301
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.891
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.002
    additional property: Liveness
      type: PropertyValue
      value: 0.355
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.251
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.284
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Em Luôn Ở Trong Tâm Trí Anh - Lofi
  type: MusicRecording
  duration: PT3M25S
  duration ms: 205090
  explicit: false
  by artist: Nguyen Van Chung
  in album: Con Đường Mưa (Lofi version)
    type: MusicAlbum
    date published: 2024-04-26
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0L2473073
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T09:33:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa575c2e626871f8460838900cdeebbb694a6bcb35298581d69d49c9eba02c9b9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958714
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958714
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2473073
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T09:51:44Z
  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 0xa575c2e626871f8460838900cdeebbb694a6bcb35298581d69d49c9eba02c9b9. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2473073 — a six-check JSON result.
    date published: 2026-07-19T09:51:44Z
  audio: Em Luôn Ở Trong Tâm Trí Anh - Lofi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.912
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.664
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
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    additional property: Acousticness
      type: PropertyValue
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    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: 0.226
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.214
    additional property: Key Name
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      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Mái Ấm Gia Đình
type: MusicAlbum
date published: 2024-04-27

Hạnh Phúc Là Cho Đi
type: MusicAlbum
date published: 2024-04-28

Happy Birthday To You
type: MusicAlbum
date published: 2024-04-30

Em Là Gì Trong Tim Anh
type: MusicAlbum
date published: 2024-04-30
track: Em Là Gì Trong Tim Anh
  type: MusicRecording
  duration: PT4M18S
  duration ms: 258174
  explicit: false
  by artist: Nguyen Van Chung
  in album: Em Là Gì Trong Tim Anh
    type: MusicAlbum
    date published: 2024-04-30
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0Q2429640
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T04:06:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc7f3760bb7a8b1d89fb360c5fef115a27d4a1e3523cc45aeed37f3475d1b01ea
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958238
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958238
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2429640
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T04:30:31Z
  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 0xc7f3760bb7a8b1d89fb360c5fef115a27d4a1e3523cc45aeed37f3475d1b01ea. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2429640 — a six-check JSON result.
    date published: 2026-07-16T04:30:31Z
  audio: Em Là Gì Trong Tim Anh
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 179.762
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.487
    additional property: Energy
      type: PropertyValue
      value: 0.308
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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      value: -9.159
    additional property: Key Name
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Nhạc Thiếu Nhi - P10: Em Sẽ Là Cô Giáo
type: MusicAlbum
date published: 2024-05-20

Nhạc Thiếu Nhi - P11: Hoa Điểm 10
type: MusicAlbum
date published: 2024-05-20

Hạnh Phúc Xuân Ngời
type: MusicAlbum
date published: 2024-07-02

Nhạc Thiếu Nhi - P12: Hào Hùng Sử Việt
type: MusicAlbum
date published: 2024-07-13

Nhạc Thiếu Nhi - P13: Mỉm Cười Đến Trường
type: MusicAlbum
date published: 2024-09-13

Nhạc Thiếu Nhi - P14: Bảng Chữ Cái
type: MusicAlbum
date published: 2024-09-14

Người Thầy Năm Xưa (Khác)
type: MusicAlbum
date published: 2024-11-14

Bức Tranh Thành Phố Mới
type: MusicAlbum
date published: 2024-12-05

Bình Yên Vui Xuân
type: MusicAlbum
date published: 2024-12-07

Viết Tiếp Câu Chuyện Hòa Bình (Đức Tư Remix)
type: MusicAlbum
date published: 2024-12-10

Biển, Mặt Đất Và Bầu Trời (Trung Ngon Remix)
type: MusicAlbum
date published: 2024-12-18

Xuân Về Hoa Nở
type: MusicAlbum
date published: 2024-12-20

Điều Tử Tế Nhỏ Thôi
type: MusicAlbum
date published: 2024-12-28

Cô Đơn Trong Nhà Mình (Acoustic)
type: MusicAlbum
date published: 2025-01-03
track: Cô Đơn Trong Nhà Mình - Acoustic
  type: MusicRecording
  duration: PT4M50S
  duration ms: 290435
  explicit: false
  by artist: Nguyen Van Chung
  in album: Cô Đơn Trong Nhà Mình (Acoustic)
    type: MusicAlbum
    date published: 2025-01-03
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: DGA0T2465733
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T03:45:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x145da1626cb9618dcae74b2567e50a533ec013d99e42405635b2b25659e197ce
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960207
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0T2465733
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T04:47:22Z
  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 0x145da1626cb9618dcae74b2567e50a533ec013d99e42405635b2b25659e197ce. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0T2465733 — a six-check JSON result.
    date published: 2026-07-30T04:47:22Z
  audio: Cô Đơn Trong Nhà Mình - Acoustic
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.852
    additional property: Musical Key
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      value: 4
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.651
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.951
    additional property: Key Name
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    additional property: Mode Name
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Bữa Tối Một Mình (From "Gia Vị Tình Thâm")
type: MusicAlbum
date published: 2025-01-20

Tết Xa
type: MusicAlbum
date published: 2025-01-22

Bữa Tối Một Mình (Instrumental)
type: MusicAlbum
date published: 2025-01-23

Tết Xa
type: MusicAlbum
date published: 2025-02-09

Cảm Ơn Em Vì Đã Yêu Anh
type: MusicAlbum
date published: 2025-02-15
track: Cảm Ơn Em Vì Đã Yêu Anh
  type: MusicRecording
  duration: PT3M46S
  duration ms: 226232
  explicit: false
  by artist: Nguyen Van Chung
  in album: Cảm Ơn Em Vì Đã Yêu Anh
    type: MusicAlbum
    date published: 2025-02-15
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FR2X42552121
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T02:18:48+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xd32fc7058da58558e60bb6db063f24ccf881af74fb6dce8eab57261fff453b15
  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/FR2X42552121
  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 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 0xd32fc7058da58558e60bb6db063f24ccf881af74fb6dce8eab57261fff453b15. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42552121 — a six-check JSON result.
    date published: 2026-07-05T10:01:46Z
  audio: Cảm Ơn Em Vì Đã Yêu Anh
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 0
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.487
    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.306
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.327
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.845
    additional property: Key Name
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      value: C
    additional property: Mode Name
      type: PropertyValue
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Rồi Tim Sẽ Lành
type: MusicAlbum
date published: 2025-02-28

Rồi Tim Sẽ Lành (Live)
type: MusicAlbum
date published: 2025-03-03

Rồi Tim Sẽ Lành (HuyPT Remix)
type: MusicAlbum
date published: 2025-03-06

Rồi Tim Sẽ Lành (Lofi)
type: MusicAlbum
date published: 2025-03-08

Trường Sa Ca (Đức Tư Remix)
type: MusicAlbum
date published: 2025-03-09

Đẹp Nhất Áo Dài (Remix)
type: MusicAlbum
date published: 2025-03-15

Người Cũ Có Người Mới
type: MusicAlbum
date published: 2025-03-20
track: Người Cũ Có Người Mới
  type: MusicRecording
  duration: PT4M30S
  duration ms: 270977
  explicit: false
  by artist: Nguyen Van Chung
  in album: Người Cũ Có Người Mới
    type: MusicAlbum
    date published: 2025-03-20
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FR59R2598517
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T07:34:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd55adc6ade1a0bab7c7abab792642f5d9e0ee1d7bf0dff46c3d61b8b42ea7c45
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956476
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956476
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598517
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T09:04:44Z
  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 0xd55adc6ade1a0bab7c7abab792642f5d9e0ee1d7bf0dff46c3d61b8b42ea7c45. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598517 — a six-check JSON result.
    date published: 2026-07-03T09:04:44Z
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.349
    additional property: Energy
      type: PropertyValue
      value: 0.438
    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
      value: 0.898
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.129
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.281
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.446
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

Dũng Cảm Lên Cô Gái
type: MusicAlbum
date published: 2025-03-20
track: Dũng Cảm Lên Cô Gái
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196017
  explicit: false
  by artist: Nguyen Van Chung
  in album: Dũng Cảm Lên Cô Gái
    type: MusicAlbum
    date published: 2025-03-20
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FR59R2598520
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T19:20:08+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x89a3d2bcf7d59790cded68670a2ad8b3114da94014cd3ed1c70efab9d98ceb6f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957965
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957965
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598520
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-14T07:07:52Z
  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 0x89a3d2bcf7d59790cded68670a2ad8b3114da94014cd3ed1c70efab9d98ceb6f. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598520 — a six-check JSON result.
    date published: 2026-07-14T07:07:52Z
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.438
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.805
    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.212
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.35
    additional property: Key Name
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Đừng Yêu Ai Quá
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date published: 2025-03-20

Cười Và Khóc
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date published: 2025-03-20
track: Cười Và Khóc
  type: MusicRecording
  duration: PT5M22S
  duration ms: 322032
  explicit: false
  by artist: Nguyen Van Chung
  in album: Cười Và Khóc
    type: MusicAlbum
    date published: 2025-03-20
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FR59R2598523
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T21:10:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x88754eb98bee6909dd6a9df22de8f8f85f985ae45a8d05f71d11f4a9d7f68fe4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958329
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598523
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T21:48:38Z
  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 0x88754eb98bee6909dd6a9df22de8f8f85f985ae45a8d05f71d11f4a9d7f68fe4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2598523 — a six-check JSON result.
    date published: 2026-07-16T21:48:38Z
  audio: Cười Và Khóc
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 121.889
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.577
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.958
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.296
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.955
    additional property: Key Name
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    additional property: Mode Name
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Ai Có Dư Hạnh Phúc?
type: MusicAlbum
date published: 2025-03-20

Người Hết Thương Mình
type: MusicAlbum
date published: 2025-03-20

Khi Nào Ta Gặp Lại?
type: MusicAlbum
date published: 2025-03-20

Làm Theo Di Chúc Thiêng Liêng (Epic)
type: MusicAlbum
date published: 2025-03-26

Nhạc Không Lời Thế Hệ 8x 9x ,Vol . 3 (Guitar)
type: MusicAlbum
date published: 2025-03-27

Tiếng Việt Thiêng Liêng (Remix)
type: MusicAlbum
date published: 2025-03-27

KIDISONGS: Beat Nhạc Thiếu Nhi, Vol.1
type: MusicAlbum
date published: 2025-04-03

Bí Mật Nhỏ (Thích Ăn Bánh Dừa)
type: MusicAlbum
date published: 2025-04-04

Nhạc Thiếu Nhi Viết Tiếp Câu Chuyện Hòa Bình, Vol.15
type: MusicAlbum
date published: 2025-04-16

Đừng Yêu Ai Quá
type: MusicAlbum
date published: 2025-04-17
track: Đừng Yêu Ai Quá
  type: MusicRecording
  duration: PT4M45S
  duration ms: 285910
  explicit: false
  by artist: Nguyen Van Chung
  in album: Đừng Yêu Ai Quá
    type: MusicAlbum
    date published: 2025-04-17
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FR59R2587332
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfd7e90fe4eab52985b8f1786773227d8b21ce8d14bc5be01fc79703ca7c101c8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958812
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958812
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2587332
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T03:24:09Z
  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 0xfd7e90fe4eab52985b8f1786773227d8b21ce8d14bc5be01fc79703ca7c101c8. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2587332 — a six-check JSON result.
    date published: 2026-07-20T03:24:09Z
  audio: Đừng Yêu Ai Quá
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 104.996
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.709
    additional property: Energy
      type: PropertyValue
      value: 0.477
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.169
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.604
    additional property: Key Name
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      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Raplove 8x9x, Vol. 7
type: MusicAlbum
date published: 2025-04-18

Viết Tiếp Câu Chuyện Hòa Bình (Remix)
type: MusicAlbum
date published: 2025-04-22

Nguyện Thề Vì Bình Yên
type: MusicAlbum
date published: 2025-04-24
track: Nguyện Thề Vì Bình Yên
  type: MusicRecording
  duration: PT3M36S
  duration ms: 216183
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nguyện Thề Vì Bình Yên
    type: MusicAlbum
    date published: 2025-04-24
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FRX202549353
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T13:55:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdcc41119d3e1c37cb42370af9aee9cc69d464d9f0d9ba578a7a576cb46842933
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958428
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958428
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202549353
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T15:15:14Z
  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 0xdcc41119d3e1c37cb42370af9aee9cc69d464d9f0d9ba578a7a576cb46842933. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202549353 — a six-check JSON result.
    date published: 2026-07-17T15:15:14Z
  audio: Nguyện Thề Vì Bình Yên
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 110.178
    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: 0.611
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
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      value: 0.757
    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: 0.75
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.817
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Viết Tiếp Câu Chuyện Hòa Bình (Piano Version)
type: MusicAlbum
date published: 2025-05-03

Viết Tiếp Câu Chuyện Hòa Bình (Violin Version)
type: MusicAlbum
date published: 2025-05-05

Viết Tiếp Câu Chuyện Hòa Bình (Japanese Version)
type: MusicAlbum
date published: 2025-05-09

Nguyện Thề Vì Bình Yên
type: MusicAlbum
date published: 2025-05-14

Nguyện Thề Vì Bình Yên (Đức Tư Remix)
type: MusicAlbum
date published: 2025-05-14
track: Nguyện Thề Vì Bình Yên - Đức Tư Remix
  type: MusicRecording
  duration: PT3M32S
  duration ms: 212571
  explicit: false
  by artist: Nguyen Van Chung
  in album: Nguyện Thề Vì Bình Yên (Đức Tư Remix)
    type: MusicAlbum
    date published: 2025-05-14
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: US38Y2542543
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T06:54:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x04a0fa6f03259701bfa55114eb5e8d66886a6dee784bbb038d2eb68b335acc85
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958839
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958839
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2542543
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T07:01:59Z
  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 0x04a0fa6f03259701bfa55114eb5e8d66886a6dee784bbb038d2eb68b335acc85. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2542543 — a six-check JSON result.
    date published: 2026-07-20T07:01:59Z
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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Write On The Story Of Peace (Viết Tiếp Câu Chuyện Hòa Bình)
type: MusicAlbum
date published: 2025-05-25
track: Write On The Story Of Peace (Viết Tiếp Câu Chuyện Hòa Bình)
  type: MusicRecording
  duration: PT5M4S
  duration ms: 304847
  explicit: false
  by artist: Nguyen Van Chung
  in album: Write On The Story Of Peace (Viết Tiếp Câu Chuyện Hòa Bình)
    type: MusicAlbum
    date published: 2025-05-25
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: FRX282569919
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T15:32:26+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xe693017424ba71773d24e7d28f2c0f693cc27d5039ffa552ecfccc52301f3a0e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282569919
  additional property: OTSTimestamp
    type: PropertyValue
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  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 0xe693017424ba71773d24e7d28f2c0f693cc27d5039ffa552ecfccc52301f3a0e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282569919 — a six-check JSON result.
    date published: 2026-07-22T15:39:05Z
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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Viết Tiếp Câu Chuyện Hòa Bình (Tiếng Nhật - Nga - Anh - Việt)
type: MusicAlbum
date published: 2025-05-29

Chương Mới Volume. 2
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date published: 2025-06-11
track: Em Cô Đơn Lắm Phải Không?
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  duration: PT4M6S
  duration ms: 246616
  explicit: false
  by artist: Nguyen Van Chung
  in album: Chương Mới Volume. 2
    type: MusicAlbum
    date published: 2025-06-11
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
  isrc code: VNA1M2404883
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-16T12:26:27+00:00
  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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    value: https://blockstream.info/api/block-height/958286
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2404883
  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 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 0x708bda54267d399306fc6f36d4151d4ca58d7a4e6f8e605039f6e1e11b26cd68. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2404883 — a six-check JSON result.
    date published: 2026-07-16T12:43:37Z
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: Kể Đi Anh Nghe
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  duration: PT4M29S
  duration ms: 269024
  explicit: false
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  in album: Chương Mới Volume. 2
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    date published: 2025-06-11
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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    value: 2026-07-16T21:38:10+00:00
  additional property: CopyrightChainExplorerURL
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-16T21:55:37Z
  audio: Kể Đi Anh Nghe
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  by artist: Nguyen Van Chung
  in album: Chương Mới Volume. 2
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    date published: 2025-06-11
  genre: vietnamese bolero
  genre: vinahouse
  genre: v-pop
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  subject of: OpenTimestamps Proof of Existence
  audio: Vô Lý

OTSHash
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value: https://blockstream.info/api/block-height/956725

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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2404888

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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 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6561ed84e1f3ce2ca39a08d9265d5017b0ffdf0a74e36a310373f800262a4952. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2404888 — a six-check JSON result.
date published: 2026-07-05T01:12:41Z

Vô Lý
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Liveness
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additional property: Key Name
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Đồi Hoa Mặt Trời (Remix)
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date published: 2025-06-21

A Lil Family, An Utter Joy (Gia Đình Nhỏ Hạnh Phúc)
type: MusicAlbum
date published: 2025-06-28

Sự Tích Trung Thu
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date published: 2025-07-01

Điều Em Lo Sợ (HuyPT Remix)
type: MusicAlbum
date published: 2025-07-23

Điều Anh Lo Sợ (Lo-Fi)
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date published: 2025-08-08

Viết Tiếp Câu Chuyện Hòa Bình
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date published: 2025-08-11

Viết Tiếp Câu Chuyện Hòa Bình (Remix)
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date published: 2025-08-21
track: Viết Tiếp Câu Chuyện Hòa Bình - Remix
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  duration ms: 307001
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    date published: 2025-08-21
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05787420b41a797a9ee786ea2e49051b7c0e05dac9a7de257a983b4a105ec043. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872567495 — a six-check JSON result.
    date published: 2026-07-05T10:01:46Z
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