Hồng Nhung
type: MusicGroup
genre: vietnamese bolero
genre: v-pop
popularity: 32
followers: 93138
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x578124ba2db34d481f59efce83a39cc5e926741d36909518ea799c6d9e13497b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x578124ba2db34d481f59efce83a39cc5e926741d36909518ea799c6d9e13497b","name":"Hồng Nhung","registered_at":"2026-06-11T11:11:07Z","symbol":"NIM0009717","token_address":"0xe36787a46643570d746dcfaee8adb5ef0df0df9c","type":"artist","uuid":"06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab"}
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 → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578124ba2db34d481f59efce83a39cc5e926741d36909518ea799c6d9e13497b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.json and https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x578124ba2db34d481f59efce83a39cc5e926741d36909518ea799c6d9e13497b","name":"Hồng Nhung","registered_at":"2026-06-11T11:11:07Z","symbol":"NIM0009717","token_address":"0xe36787a46643570d746dcfaee8adb5ef0df0df9c","type":"artist","uuid":"06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab"}
album: CHỢT NGHE EM HÁT
  type: MusicAlbum
  date published: 1905-06-17
album: ĐOẢN KHÚC THU HÀ NỘI
  type: MusicAlbum
  date published: 1905-06-19
album: LỜI THIÊN THU GỌI
  type: MusicAlbum
  date published: 1905-06-20
album: VƯỜN YÊU
  type: MusicAlbum
  date published: 1905-06-20
album: RU TÌNH
  type: MusicAlbum
  date published: 1905-06-22
  track: Ru tình
    type: MusicRecording
    duration: PT7M5S
    duration ms: 425106
    explicit: false
    by artist: Hồng Nhung
    in album: RU TÌNH
      type: MusicAlbum
      date published: 1905-06-22
    genre: vietnamese bolero
    genre: v-pop
    isrc code: FRX282494093
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T02:35:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbb00164464c55d69ad4c7406dac850c3592ef9cb2c7f6916c96d043fb8855efe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282494093
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb00164464c55d69ad4c7406dac850c3592ef9cb2c7f6916c96d043fb8855efe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282494093.
      date published: 2026-07-04T11:19:20Z
    audio: Ru tình
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 60.936
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.226
      additional property: Energy
        type: PropertyValue
        value: 0.046
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.93
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.066
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.505
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: NGÀY KHÔNG MƯA
  type: MusicAlbum
  date published: 1905-06-23
album: THUỞ BỐNG LÀ NGƯỜI
  type: MusicAlbum
  date published: 1905-06-24
album: MỘT NGÀY MỚI
  type: MusicAlbum
  date published: 1905-06-25
album: KHU VƯỜN YÊN TĨNH
  type: MusicAlbum
  date published: 1905-06-26
album: NHƯ CÁNH VẠC BAY
  type: MusicAlbum
  date published: 1905-06-28
  track: Như cánh vạc bay
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254693
    explicit: false
    by artist: Hồng Nhung
    in album: NHƯ CÁNH VẠC BAY
      type: MusicAlbum
      date published: 1905-06-28
    genre: vietnamese bolero
    genre: v-pop
    isrc code: FRX452431257
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T21:18:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1490101e682dda19f74a90f52e9c0152babd4a8cb5a6ebef3a6639f1b6441d5b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958331
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/958331
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452431257
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:23:46Z
    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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490101e682dda19f74a90f52e9c0152babd4a8cb5a6ebef3a6639f1b6441d5b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452431257.
      date published: 2026-07-17T00:23:46Z
    audio: Như cánh vạc bay
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.602
      additional property: Musical Key
      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)
      additional property: Key Name
      additional property: Mode Name
album: EM HÃY NGỦ ĐI
album: VÌ TA CẦN NHAU
album: CÓ ĐÂU BAO GIỜ
album: VÒNG TRÒN
album: PHỐ À, PHỐ ƠI...
album: TUỔI THƠ TÔI
album: Níu tay nghìn trùng (Mưa Hồng 237)
album: Luôn Mãi Yêu Em
album: Tình Khúc Tím
album: Hồng Nhung - Có phải em mùa thu Hà Nội
album: Chiều phủ Tây Hồ
album: Hồng Nhung & Thanh Lam - Nghe mưa
album: Đoản khúc thu Hà Nội
album: Tình Yêu Mãi Mãi
album: 4 Giọng Ca Vàng
album: Ngay Khong Mua
album: Bài Ca Thần Chim Lạc
album: Khu Vuon Yen Tinh
album: Nhu Canh Vac Bay
album: vi ta can nhau
album: Có Đâu Bao Giờ
album: Vong Tron
album: Hồng Nhung Và Những Bài Top Ten
album: Mê khúc
album: Hà Nội ngày trở về
album: Vườn yêu
album: Nhớ về Hà Nội
album: Đoản Khúc Thu Hà Nội
album: Dân Ca Nghệ An
album: Lênh Đênh
album: Lời Của Gió
album: Nỗi Nhớ Mây Xưa
album: Ngày Mưa Hãy Đến Với Em
album: Tiếng Hát Hồng Nhung
album: Dấu Vết
album: Bài Hát Ru Cho Anh
album: Beauty And The Beast
album: Frozen in Time
album: The Legend of Huma
album: Accidental Hero
album: The Unsung Hero
album: Đường Cày Đảm Đang (Đại Hội Thi Đua Yêu Nước Lần V)
album: Vẫn Hát Lời Tình Yêu (Lofi)
album: Kết Thúc Không Lý Do
album: Thế Giới Bao La Không Gặp Lại
album: Nếu Anh Đi
album: Đài Phát Thanh Công Cộng
album: Simple Beauty
album: Bống Là Ai?
album: Nếu Anh Đi (Remix)
album: Nếu Anh Đi (Lofi)
album: Gót Hồng (Live Show Hoa Hậu Việt Nam 1998)
album: Nhớ Thành Phố Hoa Đào

Musical Key
type: PropertyValue
value: 9

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

Time Signature
type: PropertyValue
value: 3

Danceability
type: PropertyValue
value: 0.368

Energy
type: PropertyValue
value: 0.254

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.867

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.113

Valence (Positivity)
type: PropertyValue
value: 0.177

Loudness (dB)
type: PropertyValue
value: -9.697

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

EM HÃY NGỦ ĐI
type: MusicAlbum
date published: 1905-06-28

VÌ TA CẦN NHAU
type: MusicAlbum
date published: 1905-06-29

CÓ ĐÂU BAO GIỜ
type: MusicAlbum
date published: 1905-07-01
track: Ru em từng ngón xuân nồng
  type: MusicRecording
  duration: PT5M29S
  duration ms: 329066
  explicit: false
  by artist: Hồng Nhung
  in album: CÓ ĐÂU BAO GIỜ
    type: MusicAlbum
    date published: 1905-07-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: FRX452431239
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T17:06:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x90974895bd31ce73b9a1940d3c1b731fe2dbc7cb34ad6df0e573f5e8ba2dfb3b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452431239
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90974895bd31ce73b9a1940d3c1b731fe2dbc7cb34ad6df0e573f5e8ba2dfb3b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452431239.
    date published: 2026-07-05T19:27:56Z
  audio: Ru em từng ngón xuân nồng
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.489
    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: 0.34
    additional property: Energy
      type: PropertyValue
      value: 0.303
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.816
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.002
    additional property: Liveness
      type: PropertyValue
      value: 0.099
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.063
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.664
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

VÒNG TRÒN
type: MusicAlbum
date published: 1905-07-03

PHỐ À, PHỐ ƠI...
type: MusicAlbum
date published: 1905-07-09

TUỔI THƠ TÔI
type: MusicAlbum
date published: 1905-07-12

Níu tay nghìn trùng (Mưa Hồng 237)
type: MusicAlbum
date published: 1994-01-01

Luôn Mãi Yêu Em
type: MusicAlbum
date published: 1995-06-25

Tình Khúc Tím
type: MusicAlbum
date published: 1996-01-01

Hồng Nhung - Có phải em mùa thu Hà Nội
type: MusicAlbum
date published: 1996-01-01

Chiều phủ Tây Hồ
type: MusicAlbum
date published: 1997-01-01
track: Hà Nội đêm trở gió
  type: MusicRecording
  duration: PT6M40S
  duration ms: 400773
  explicit: false
  by artist: Hồng Nhung
  in album: Chiều phủ Tây Hồ
    type: MusicAlbum
    date published: 1997-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1781709
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T00:18:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x77bf26d116eae9e78067dd3060e95624c01bab4cafeb440027ce037f4e95a9a7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781709
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bf26d116eae9e78067dd3060e95624c01bab4cafeb440027ce037f4e95a9a7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781709.
    date published: 2026-07-06T01:25:57Z
  audio: Hà Nội đêm trở gió
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 151.848
    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: 0.428
    additional property: Energy
      type: PropertyValue
      value: 0.406
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.238
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.199
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.342
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.71
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Chiều phủ Tây Hồ
  type: MusicRecording
  duration: PT5M9S
  duration ms: 309613
  explicit: false
  by artist: Hồng Nhung
  in album: Chiều phủ Tây Hồ
    type: MusicAlbum
    date published: 1997-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1781713
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T03:40:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2bddb88e313666d352918413217255b84e21bef7eff1da0493c2192e9c345728
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956776
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956776
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781713
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:59:37Z
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bddb88e313666d352918413217255b84e21bef7eff1da0493c2192e9c345728. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781713.
    date published: 2026-07-05T10:59:37Z
  audio: Chiều phủ Tây Hồ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.999
    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: 0.682
    additional property: Energy
      type: PropertyValue
      value: 0.426
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.718
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.034
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.702
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.376
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Hoa sữa
  type: MusicRecording
  duration: PT4M25S
  duration ms: 265573
  explicit: false
  by artist: Hồng Nhung
  in album: Chiều phủ Tây Hồ
    type: MusicAlbum
    date published: 1997-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1781716
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-30T03:29:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfa1a6b67b666d5d9e4fc479d9e5cc2d8e0757f78baf155868df342d3c582f353
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956375
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Hoa sữa
track: Lãng đãng chiều đông Hà Nội

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/956375

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781716

OTSTimestamp
type: PropertyValue
value: 2026-07-02T16:51:38Z

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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1a6b67b666d5d9e4fc479d9e5cc2d8e0757f78baf155868df342d3c582f353. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781716.
date published: 2026-07-02T16:51:38Z

Hoa sữa
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 174.459
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.316
additional property: Energy
  type: PropertyValue
  value: 0.277
additional property: Speechiness
  type: PropertyValue
  value: 0.03
additional property: Acousticness
  type: PropertyValue
  value: 0.591
additional property: Instrumentalness
  type: PropertyValue
  value: 0.003
additional property: Liveness
  type: PropertyValue
  value: 0.08
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.187
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.387
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Minor

Lãng đãng chiều đông Hà Nội
type: MusicRecording
duration: PT6M58S
duration ms: 418120
explicit: false
by artist: Hồng Nhung
in album: Chiều phủ Tây Hồ
  type: MusicAlbum
  date published: 1997-01-01
genre: vietnamese bolero
genre: v-pop
isrc code: VNA0F1781718
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T23:05:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f1859d89b98312ba4280fd9c28d3dca3534b8e009b79f7b55913490c88dc256
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/958468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781718
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T00:27:51Z
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1859d89b98312ba4280fd9c28d3dca3534b8e009b79f7b55913490c88dc256. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1781718.
  date published: 2026-07-18T00:27:51Z
audio: Lãng đãng chiều đông Hà Nội
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.736
  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: 0.575
  additional property: Energy
    type: PropertyValue
    value: 0.263
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.408
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.108
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.466
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Hồng Nhung & Thanh Lam - Nghe mưa
type: MusicAlbum
date published: 1997-01-01

Đoản khúc thu Hà Nội
type: MusicAlbum
date published: 1997-07-21

Tình Yêu Mãi Mãi
type: MusicAlbum
date published: 1998-01-01

4 Giọng Ca Vàng
type: MusicAlbum
date published: 1998-06-25
track: Hoa Tím Ngày Xưa
  type: MusicRecording
  duration: PT6M18S
  duration ms: 378306
  explicit: false
  by artist: Hồng Nhung
  in album: 4 Giọng Ca Vàng
    type: MusicAlbum
    date published: 1998-06-25
  genre: vietnamese bolero
  genre: v-pop
  isrc code: USJ3V1229778
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T10:28:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe6fa1017651a0ca535091dd5f00a40005d8c8a78b30a80152550a2365c00522f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958146
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/958146
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1229778
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T10:33:22Z
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa1017651a0ca535091dd5f00a40005d8c8a78b30a80152550a2365c00522f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1229778.
    date published: 2026-07-15T10:33:22Z
  audio: Hoa Tím Ngày Xưa
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 91.238
    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: 0.574
    additional property: Energy
      type: PropertyValue
      value: 0.229
    additional property: Speechiness
      type: PropertyValue
      value: 0.025
    additional property: Acousticness
      type: PropertyValue
      value: 0.612
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.14
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.244
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.575
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Không Còn Mùa Thu
  type: MusicRecording
  duration: PT4M57S
  duration ms: 297866
  explicit: false
  by artist: Hồng Nhung
  in album: 4 Giọng Ca Vàng
    type: MusicAlbum
    date published: 1998-06-25
  genre: vietnamese bolero
  genre: v-pop
  isrc code: USJ3V1229781
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-30T03:27:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa9334ed12676a2ac98eb6b12abab8d22491d7783b67d403dea5f02643a707dc9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956375
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956375
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1229781
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9334ed12676a2ac98eb6b12abab8d22491d7783b67d403dea5f02643a707dc9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1229781.
    date published: 2026-07-02T16:51:38Z
  audio: Không Còn Mùa Thu
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.472
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.284
    additional property: Energy
      type: PropertyValue
      value: 0.102
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.736
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.185
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.094
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.704
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Ngay Khong Mua
type: MusicAlbum
date published: 2001-01-01

Bài Ca Thần Chim Lạc
type: MusicAlbum
date published: 2001-06-25

Khu Vuon Yen Tinh
type: MusicAlbum
date published: 2004-01-01

Nhu Canh Vac Bay
type: MusicAlbum
date published: 2006-01-01
track: Mot coi di ve
  type: MusicRecording
  duration: PT4M26S
  duration ms: 266706
  explicit: false
  by artist: Hồng Nhung
  in album: Nhu Canh Vac Bay
    type: MusicAlbum
    date published: 2006-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: USHM80727772
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T23:22:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3707226b7939788a7beeaa377ede906f213e4894ef6e35700b9b7d5a7cc0cc59
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957775
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957775
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727772
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T00:04:23Z
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3707226b7939788a7beeaa377ede906f213e4894ef6e35700b9b7d5a7cc0cc59. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727772.
    date published: 2026-07-13T00:04:23Z
  audio: Mot coi di ve
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.31
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.528
    additional property: Energy
      type: PropertyValue
      value: 0.363
    additional property: Speechiness
      type: PropertyValue
      value: 0.026
    additional property: Acousticness
      type: PropertyValue
      value: 0.729
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.164
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.778
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Nhin nhung mua thu di
  type: MusicRecording
  duration: PT4M32S
  duration ms: 272800
  explicit: false
  by artist: Hồng Nhung
  in album: Nhu Canh Vac Bay
    type: MusicAlbum
    date published: 2006-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: USHM80727773
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T06:29:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x86c52a7ff843885206a20affb4d5b5a2dcb0611c4c5be395aca371062ae33320
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956790
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956790
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727773
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T12:31:54Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c52a7ff843885206a20affb4d5b5a2dcb0611c4c5be395aca371062ae33320. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727773.
    date published: 2026-07-05T12:31:54Z
  audio: Nhin nhung mua thu di
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.003
    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: 0.712
    additional property: Energy
      type: PropertyValue
      value: 0.591
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.823
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.115
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.291
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.672
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Tuổi Đá Buồn
  type: MusicRecording
  duration: PT5M56S
  duration ms: 356920
  explicit: false
  by artist: Hồng Nhung
  in album: Nhu Canh Vac Bay
    type: MusicAlbum
    date published: 2006-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: USHM80727775
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T07:15:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x15191c3843b6a0d8b5e2a580157bae3de26bb3748310625e9203aef13f0005f7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958544
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Tuổi Đá Buồn
track: Roi nhu da ngay ngo

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/958544

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727775

OTSTimestamp
type: PropertyValue
value: 2026-07-18T12:14:37Z

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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15191c3843b6a0d8b5e2a580157bae3de26bb3748310625e9203aef13f0005f7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727775.
date published: 2026-07-18T12:14:37Z

Tuổi Đá Buồn
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 79.98
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.229
additional property: Energy
  type: PropertyValue
  value: 0.278
additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.904
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.103
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.147
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.095
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
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Roi nhu da ngay ngo
type: MusicRecording
duration: PT4M20S
duration ms: 260253
explicit: false
by artist: Hồng Nhung
in album: Nhu Canh Vac Bay
  type: MusicAlbum
  date published: 2006-01-01
genre: vietnamese bolero
genre: v-pop
isrc code: USHM80727776
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-05T13:11:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa3a1a620c13f904077f4195d558badc037acbf933d1430f89e361d568258b2e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956826
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727776
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T19:27:56Z
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1a620c13f904077f4195d558badc037acbf933d1430f89e361d568258b2e2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80727776.
  date published: 2026-07-05T19:27:56Z
audio: Roi nhu da ngay ngo
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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: 0.792
  additional property: Energy
    type: PropertyValue
    value: 0.619
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.563
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.049
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.357
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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vi ta can nhau
type: MusicAlbum
date published: 2007-01-01

Có Đâu Bao Giờ
type: MusicAlbum
date published: 2009-01-01

Vong Tron
type: MusicAlbum
date published: 2011-11-20

Hồng Nhung Và Những Bài Top Ten
type: MusicAlbum
date published: 2015-01-01
track: Vẫn Hát Lời Tình Yêu
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  duration: PT5M55S
  duration ms: 355670
  explicit: false
  by artist: Hồng Nhung
  in album: Hồng Nhung Và Những Bài Top Ten
    type: MusicAlbum
    date published: 2015-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1798415
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6885cb8c23585dc8851d78a5632639c2fa0281757dfff9455abd73098db39646
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/958351
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798415
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T02:38:05Z
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885cb8c23585dc8851d78a5632639c2fa0281757dfff9455abd73098db39646. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798415.
    date published: 2026-07-17T02:38:05Z
  audio: Vẫn Hát Lời Tình Yêu
    type: AudioObject
    additional property: Tempo (BPM)
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    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: 0.53
    additional property: Energy
      type: PropertyValue
      value: 0.243
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.352
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.058
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.321
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.907
    additional property: Key Name
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      value: C
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track: Giọt Sương Trên Mi Mắt
  type: MusicRecording
  duration: PT4M31S
  duration ms: 271712
  explicit: false
  by artist: Hồng Nhung
  in album: Hồng Nhung Và Những Bài Top Ten
    type: MusicAlbum
    date published: 2015-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1798416
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798416
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf659d24520b283119be11cb96f71b5860a2c544a26867fb123d92d7a89184. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798416.
    date published: 2026-07-03T21:18:05Z
  audio: Giọt Sương Trên Mi Mắt
    type: AudioObject
    additional property: Tempo (BPM)
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    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: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.556
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
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    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: -11.45
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
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      value: Minor
track: Đóa hoa vô thường
  type: MusicRecording
  duration: PT6M35S
  duration ms: 395977
  explicit: false
  by artist: Hồng Nhung
  in album: Hồng Nhung Và Những Bài Top Ten
    type: MusicAlbum
    date published: 2015-01-01
  genre: vietnamese bolero
  genre: v-pop
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T19:37:18+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x424d480071b98b087eb07cfd8722b4cc0fa50f2f6ff51e2b0a6ec63cbe262e5f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956728
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Đóa hoa vô thường
track: Tình Khúc 24

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/956728

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798419

OTSTimestamp
type: PropertyValue
value: 2026-07-05T01:43:49Z

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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424d480071b98b087eb07cfd8722b4cc0fa50f2f6ff51e2b0a6ec63cbe262e5f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798419.
date published: 2026-07-05T01:43:49Z

Đóa hoa vô thường
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 102.045
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.535
additional property: Energy
  type: PropertyValue
  value: 0.306
additional property: Speechiness
  type: PropertyValue
  value: 0.034
additional property: Acousticness
  type: PropertyValue
  value: 0.595
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.107
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.326
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.372
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Tình Khúc 24
type: MusicRecording
duration: PT5M51S
duration ms: 351516
explicit: false
by artist: Hồng Nhung
in album: Hồng Nhung Và Những Bài Top Ten
  type: MusicAlbum
  date published: 2015-01-01
genre: vietnamese bolero
genre: v-pop
isrc code: VNA0F1798423
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T18:23:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff5e53101d9f0a617c783d2382b5b0f72d5c0742d1b774add645b94b0e022d72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956545
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798423
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e53101d9f0a617c783d2382b5b0f72d5c0742d1b774add645b94b0e022d72. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1798423.
  date published: 2026-07-03T19:59:51Z
audio: Tình Khúc 24
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 2
  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: 0.377
  additional property: Energy
    type: PropertyValue
    value: 0.396
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.504
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.152
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.389
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Minor

Mê khúc
type: MusicAlbum
date published: 2016-01-01

Hà Nội ngày trở về
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date published: 2016-01-01
track: Hà Nội ơi, thầm hát trong tôi
  type: MusicRecording
  duration: PT5M9S
  duration ms: 309529
  explicit: false
  by artist: Hồng Nhung
  in album: Hà Nội ngày trở về
    type: MusicAlbum
    date published: 2016-01-01
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0F1724665
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T17:37:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3b04e75041aad644c29343a8576d0202f99e290b126fc5fefadcbdbd23f233ec
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1724665
  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b04e75041aad644c29343a8576d0202f99e290b126fc5fefadcbdbd23f233ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1724665.
    date published: 2026-07-08T08:56:20Z
  audio: Hà Nội ơi, thầm hát trong tôi
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    additional property: Tempo (BPM)
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    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: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.295
    additional property: Energy
      type: PropertyValue
      value: 0.293
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.072
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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      value: E
    additional property: Mode Name
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      value: Minor

Vườn yêu
type: MusicAlbum
date published: 2016-01-01

Nhớ về Hà Nội
type: MusicAlbum
date published: 2018-01-01

Đoản Khúc Thu Hà Nội
type: MusicAlbum
date published: 2018-08-08

Dân Ca Nghệ An
type: MusicAlbum
date published: 2018-08-21

Lênh Đênh
type: MusicAlbum
date published: 2018-08-23

Lời Của Gió
type: MusicAlbum
date published: 2018-08-24

Nỗi Nhớ Mây Xưa
type: MusicAlbum
date published: 2018-08-27
track: Nhớ Mùa Thu Hà Nội
  type: MusicRecording
  duration: PT3M43S
  duration ms: 223190
  explicit: false
  by artist: Hồng Nhung
  in album: Nỗi Nhớ Mây Xưa
    type: MusicAlbum
    date published: 2018-08-27
  genre: vietnamese bolero
  genre: v-pop
  isrc code: VNA0M1825689
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-02T21:59:53+00:00
  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956822
  additional property: OTSVerificationAPI
    type: PropertyValue
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  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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-05T18:48:28Z
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Nỗi Nhớ Mây Xưa
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date published: 2018-08-27
track: Nhớ Mùa Thu Hà Nội
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T01:01:38Z
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track: Khúc Mưa
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T01:12:41Z
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Ngày Mưa Hãy Đến Với Em
type: MusicAlbum
date published: 2018-08-27

Tiếng Hát Hồng Nhung
type: MusicAlbum
date published: 2018-08-28

Tiếng Hát Hồng Nhung
type: MusicAlbum
date published: 2018-08-28

Dấu Vết
type: MusicAlbum
date published: 2018-08-28

Bài Hát Ru Cho Anh
type: MusicAlbum
date published: 2019-11-10

Beauty And The Beast
type: MusicAlbum
date published: 2019-11-21

Beauty And The Beast
type: MusicAlbum
date published: 2019-11-21

Frozen in Time
type: MusicAlbum
date published: 2020-11-24

The Legend of Huma
type: MusicAlbum
date published: 2020-11-24

Accidental Hero
type: MusicAlbum
date published: 2020-11-24

The Unsung Hero
type: MusicAlbum
date published: 2020-11-24

Đường Cày Đảm Đang (Đại Hội Thi Đua Yêu Nước Lần V)
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date published: 2022-08-22

Vẫn Hát Lời Tình Yêu (Lofi)
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date published: 2022-09-19

Kết Thúc Không Lý Do
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Thế Giới Bao La Không Gặp Lại
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Nếu Anh Đi
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Nếu Anh Đi
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date published: 2023-12-02
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T15:41:10Z
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Đài Phát Thanh Công Cộng
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date published: 2024-01-24

Simple Beauty
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date published: 2024-01-30

Bống Là Ai?
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date published: 2024-02-28

Nếu Anh Đi (Remix)
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date published: 2024-04-06

Nếu Anh Đi (Lofi)
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date published: 2024-04-06

Gót Hồng (Live Show Hoa Hậu Việt Nam 1998)
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date published: 2024-05-01

Nhớ Thành Phố Hoa Đào
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date published: 2024-09-05

Giọt Nước Mắt
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date published: 2024-10-19

Rạng Đông Tuyển Tập 54
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date published: 2025-01-06

TỰ HỎI
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date published: 2025-07-09

Điệp khúc tình yêu
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T15:15:30Z
audio: Điệp khúc tình yêu
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Ngày mùa
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duration: PT3M7S
duration ms: 187520
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additional property: OTSHash
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Ngày mùa
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Thu Cô Liêu
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Thu Cô Liêu
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Đánh Cắp Mặt Trời
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duration: PT8M20S
duration ms: 500571
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by artist: Double2T
by artist: Tùng Dương
by artist: Hồng Nhung
by artist: Trung Quân
by artist: Phương Mỹ Chi
by artist: ERIK
by artist: Dương Hoàng Yến
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in album: Đánh Cắp Mặt Trời
  type: MusicAlbum
  date published: 2024-03-30
genre: v-pop
genre: vietnamese-hip-hop
isrc code: VNA1M2284589
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-13T17:25:41Z
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2284589.
  date published: 2026-06-13T17:25:41Z
audio: Đánh Cắp Mặt Trời
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  additional property: Key Name
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