Thiên Quang
type: MusicGroup
genre: bolero
genre: vietnamese bolero
popularity: 23
followers: 9217
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b3d194593fbd3c54c2506234fc7c1fc6582f1a0a8208e900d4738fb5a3c636a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af6768bd-6d36-4cfa-b5fb-431ee76d0609.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af6768bd-6d36-4cfa-b5fb-431ee76d0609.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af6768bd-6d36-4cfa-b5fb-431ee76d0609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8b3d194593fbd3c54c2506234fc7c1fc6582f1a0a8208e900d4738fb5a3c636a","name":"Thiên Quang","registered_at":"2026-06-12T07:18:37Z","symbol":"NIM0226016","token_address":"0x130ae0261b7cf03a489ac5e7b3f13acae17074b9","type":"artist","uuid":"af6768bd-6d36-4cfa-b5fb-431ee76d0609"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3d194593fbd3c54c2506234fc7c1fc6582f1a0a8208e900d4738fb5a3c636a. 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/af6768bd-6d36-4cfa-b5fb-431ee76d0609.json and https://artists.proofprofile.net/proofs/artist/af6768bd-6d36-4cfa-b5fb-431ee76d0609.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x8b3d194593fbd3c54c2506234fc7c1fc6582f1a0a8208e900d4738fb5a3c636a","name":"Thiên Quang","registered_at":"2026-06-12T07:18:37Z","symbol":"NIM0226016","token_address":"0x130ae0261b7cf03a489ac5e7b3f13acae17074b9","type":"artist","uuid":"af6768bd-6d36-4cfa-b5fb-431ee76d0609"}
album: Tình Nghèo Có Nhau - Mười Năm Đợi Chờ
  type: MusicAlbum
  date published: 2016-05-23
album: Tình Nghèo Có Nhau - Mười Năm Đợi Chờ
  type: MusicAlbum
  date published: 2016-05-23
album: Tuyển Tập Nhạc Trữ Tình Của Thiên Quang
  type: MusicAlbum
  date published: 2017-04-26
album: Tuyển Tập Nhạc Trữ Tình Của Thiên Quang
  type: MusicAlbum
  date published: 2017-04-26
album: Tuyệt Đỉnh Song Ca Bolero Hay Nhất - Lại Nhớ Người Yêu
  type: MusicAlbum
  date published: 2017-07-19
album: Tuyệt Đỉnh Song Ca Bolero Hay Nhất - Lại Nhớ Người Yêu
  type: MusicAlbum
  date published: 2017-07-19
album: Tuyệt Phẩm Bolero Mới Nhất Của Thiên Quang Và Quỳnh Trang
  type: MusicAlbum
  date published: 2017-12-12
album: Liên Khúc Song Ca Bolero Mới Nhất 2018
  type: MusicAlbum
  date published: 2018-02-02
album: Tuyệt Phẩm Bolero 2017 - Cặp Đôi Vàng Thiên Quang Và Quỳnh Trang
  type: MusicAlbum
  date published: 2018-03-03
album: Lá Thư Đô Thị
  type: MusicAlbum
  date published: 2018-05-07
album: Tình Buồn Bên Sông
  type: MusicAlbum
  date published: 2021-08-01
album: Em Cứ Theo Người
  type: MusicAlbum
  date published: 2021-08-01
album: Đường Tím Ngày Xưa
  type: MusicAlbum
  date published: 2021-08-01
  track: Đường Tím Ngày Xưa
    type: MusicRecording
    duration: PT5M10S
    duration ms: 310199
    explicit: false
    by artist: Thiên Quang
    in album: Đường Tím Ngày Xưa
      type: MusicAlbum
      date published: 2021-08-01
    genre: bolero
    genre: vietnamese bolero
    isrc code: VNA0F2021022
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T12:18:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2464910b01e9bdd355a32923f0b5e9d35427875dbbbed24ca4960184c75c0035
    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/VNA0F2021022
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2464910b01e9bdd355a32923f0b5e9d35427875dbbbed24ca4960184c75c0035. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021022.
      date published: 2026-07-05T01:12:41Z
    audio: Đường Tím Ngày Xưa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.975
      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: 0.581
      additional property: Energy
        type: PropertyValue
        value: 0.66
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.612
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.18
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.453
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.13
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Liên Khúc Bạc Trắng Lửa Hồng - Anh Hãy Về Đi
    type: MusicRecording
    duration: PT5M27S
    duration ms: 327719
    explicit: false
    by artist: Thiên Quang
    in album: Đường Tím Ngày Xưa
      type: MusicAlbum
      date published: 2021-08-01
    genre: bolero
    genre: vietnamese bolero
    isrc code: VNA0F2021031
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T09:20:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbd69e8e808a3e9cc20abc3a8871bb929261adbeb78f0b9041241446bd093147e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021031
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T09:45:25Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
    audio: Liên Khúc Bạc Trắng Lửa Hồng - Anh Hãy Về Đi
album: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
album: Chiều Qua Phà Hậu Giang
album: Không Còn Nhớ Người Yêu
album: Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
album: Xót Xa Tình Đầu
album: Tình Ấm Chiều Quê
album: Mùa Xuân Xa Quê
album: Thề Non Hẹn Biển
album: Liên Khúc Tình Nghèo Có Nhau - Ước Mộng Đôi Ta

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69e8e808a3e9cc20abc3a8871bb929261adbeb78f0b9041241446bd093147e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/VNA0F2021031.
date published: 2026-07-20T09:45:25Z

Liên Khúc Bạc Trắng Lửa Hồng - Anh Hãy Về Đi
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 129.841
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.49
additional property: Energy
  type: PropertyValue
  value: 0.574
additional property: Speechiness
  type: PropertyValue
  value: 0.031
additional property: Acousticness
  type: PropertyValue
  value: 0.663
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.181
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.283
additional property: Loudness (dB)
  type: PropertyValue
  value: -7.921
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
type: MusicAlbum
date published: 2021-08-01
track: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
  type: MusicRecording
  duration: PT4M33S
  duration ms: 273959
  explicit: false
  by artist: Thiên Quang
  in album: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
    type: MusicAlbum
    date published: 2021-08-01
  genre: bolero
  genre: vietnamese bolero
  isrc code: VNA0F2020982
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T00:55:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x020d50bbf58b115ce984df0b86cb49245a142255bbc1620b698f3b884105c675
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958690
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958690
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2020982
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T07:14:39Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020d50bbf58b115ce984df0b86cb49245a142255bbc1620b698f3b884105c675. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNA0F2020982.
    date published: 2026-07-19T07:14:39Z
  audio: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 172.041
    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: 0.45
    additional property: Energy
      type: PropertyValue
      value: 0.551
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.607
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.277
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.364
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.067
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Liên Khúc Người Thương Kẻ Nhớ - Sao Lòng Còn Thương
  type: MusicRecording
  duration: PT6M26S
  duration ms: 386399
  explicit: false
  by artist: Thiên Quang
  in album: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
    type: MusicAlbum
    date published: 2021-08-01
  genre: bolero
  genre: vietnamese bolero
  isrc code: VNA0F2020983
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T06:23:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbc4003685a2f4aa4a1bc148d0f32e4d70adb919fb10ffe9f541c7da25fd5823f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958980
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958980
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2020983
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T07:04:12Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4003685a2f4aa4a1bc148d0f32e4d70adb919fb10ffe9f541c7da25fd5823f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2020983.
    date published: 2026-07-21T07:04:12Z
  audio: Liên Khúc Người Thương Kẻ Nhớ - Sao Lòng Còn Thương
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.033
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.409
    additional property: Energy
      type: PropertyValue
      value: 0.526
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.665
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.344
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.427
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.61
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Liên Khúc Đoạn Tuyệt - Xin Em Đừng Khóc Vu Quy
  type: MusicRecording
  duration: PT5M52S
  duration ms: 352583
  explicit: false
  by artist: Thiên Quang
  in album: Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
    type: MusicAlbum
    date published: 2021-08-01
  genre: bolero
  genre: vietnamese bolero
  isrc code: VNA0F2020984
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T16:35:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4e5bb497088d364556bb9c8cd6deb09109a5d5150cf1611f6fb3b8d4e494d39c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959037
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Liên Khúc Đoạn Tuyệt - Xin Em Đừng Khóc Vu Quy
track: Liên Khúc Về Đâu Mái Tóc Người Thương - Thiệp Hồng Báo Tin

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/959037

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2020984

OTSTimestamp
type: PropertyValue
value: 2026-07-21T16:59:47Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5bb497088d364556bb9c8cd6deb09109a5d5150cf1611f6fb3b8d4e494d39c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/VNA0F2020984.
date published: 2026-07-21T16:59:47Z

Liên Khúc Đoạn Tuyệt - Xin Em Đừng Khóc Vu Quy
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 157.904
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: 0.426
additional property: Energy
  type: PropertyValue
  value: 0.641
additional property: Speechiness
  type: PropertyValue
  value: 0.036
additional property: Acousticness
  type: PropertyValue
  value: 0.36
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.088
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.448
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.864
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

Liên Khúc Về Đâu Mái Tóc Người Thương - Thiệp Hồng Báo Tin
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genre: bolero
genre: vietnamese bolero
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T15:31:18Z
audio: Liên Khúc Về Đâu Mái Tóc Người Thương - Thiệp Hồng Báo Tin
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Chiều Qua Phà Hậu Giang
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date published: 2021-08-01

Không Còn Nhớ Người Yêu
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date published: 2021-08-01

Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
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date published: 2021-08-01

Xót Xa Tình Đầu
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date published: 2021-08-01

Tình Ấm Chiều Quê
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date published: 2021-08-01

Mùa Xuân Xa Quê
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date published: 2021-08-01
track: Chờ Nhau Cuối Con Đường
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-20T13:27:55Z
  audio: Chờ Nhau Cuối Con Đường
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track: Đêm Tâm Sự
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    date published: 2021-08-01
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    date published: 2026-07-21T11:47:29Z
  audio: Đêm Tâm Sự
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track: Đừng Trả Cho Nhau
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  audio: Đừng Trả Cho Nhau

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-04T07:11:13Z

Đừng Trả Cho Nhau
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Thề Non Hẹn Biển
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date published: 2024-03-01

Liên Khúc Tình Nghèo Có Nhau - Ước Mộng Đôi Ta
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track: Liên Khúc Tình Nghèo Có Nhau - Ước Mộng Đôi Ta
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T16:51:38Z
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Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
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track: Liên Khúc Sau Lần Hẹn Cuối - Người Đã Như Mơ
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-04T14:03:39Z
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track: Liên Khúc Thuyền Xa Bến Đỗ - Trả Lại Em
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    date published: 2026-07-05T01:43:49Z
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    additional property: Time Signature
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    additional property: Danceability
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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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      value: -7.798
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    date published: 2024-04-26
  genre: bolero
  genre: vietnamese bolero
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  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Mai Lỡ Hai Mình Xa Nhau
track: Mãi Tìm Nhau
track: Nếu Anh Đừng Hẹn

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/958728

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021040

OTSTimestamp
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value: 2026-07-19T12:24:55Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b2e95c4b9583552b718fbc53c3a5a2c6b003e35973c44811a3708dbba02a3e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021040.
date published: 2026-07-19T12:24:55Z

Mai Lỡ Hai Mình Xa Nhau
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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
  value: 4
additional property: Danceability
  type: PropertyValue
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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
  type: PropertyValue
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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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Mãi Tìm Nhau
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duration ms: 288431
explicit: false
by artist: Thiên Quang
in album: Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
  type: MusicAlbum
  date published: 2024-04-26
genre: bolero
genre: vietnamese bolero
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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: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1072e12ae804390e7614a422e14d66a7fa9331e2dd8ac9c2c6fbc048db4a9f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:27:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021041.
  date published: 2026-07-20T00:27:06Z
audio: Mãi Tìm Nhau
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.019
  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: 0.618
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.684
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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    type: PropertyValue
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Nếu Anh Đừng Hẹn
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duration ms: 330023
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by artist: Thiên Quang
in album: Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
  type: MusicAlbum
  date published: 2024-04-26
genre: bolero
genre: vietnamese bolero
isrc code: VNA0F2021043
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-17T05:11:49+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x81f07e9b43705a508a9d6c7727f450d4cc5cb90be14925f1c16f7e58611603a4
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958373
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021043
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T06:09:33Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f07e9b43705a508a9d6c7727f450d4cc5cb90be14925f1c16f7e58611603a4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2021043.
  date published: 2026-07-17T06:09:33Z
audio: Nếu Anh Đừng Hẹn
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 159.825
  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
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
    value: 0.601
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.465
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