Lê Tâm
type: MusicGroup
genre: vietnamese bolero
genre: v-pop
popularity: 16
followers: 920
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07270e4329b5cafc822c0561acd9b0775930ff5231aba6f3ca82275d8472f169
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953782
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953782
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5d2f314-30f7-44ca-8194-c2ae494a9eb0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5d2f314-30f7-44ca-8194-c2ae494a9eb0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d5d2f314-30f7-44ca-8194-c2ae494a9eb0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:13:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x07270e4329b5cafc822c0561acd9b0775930ff5231aba6f3ca82275d8472f169","name":"Lê Tâm","registered_at":"2026-06-15T02:55:33Z","symbol":"NIM0659937","token_address":"0x11eb14efb4a67150161be758045abcf0a10ff6b4","type":"artist","uuid":"d5d2f314-30f7-44ca-8194-c2ae494a9eb0"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07270e4329b5cafc822c0561acd9b0775930ff5231aba6f3ca82275d8472f169. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5d2f314-30f7-44ca-8194-c2ae494a9eb0.json and https://artists.proofprofile.net/proofs/artist/d5d2f314-30f7-44ca-8194-c2ae494a9eb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:13:59Z
  text: {"copyright_id":"0x07270e4329b5cafc822c0561acd9b0775930ff5231aba6f3ca82275d8472f169","name":"Lê Tâm","registered_at":"2026-06-15T02:55:33Z","symbol":"NIM0659937","token_address":"0x11eb14efb4a67150161be758045abcf0a10ff6b4","type":"artist","uuid":"d5d2f314-30f7-44ca-8194-c2ae494a9eb0"}
album: Điều Gì Đó
  type: MusicAlbum
  date published: 1999-01-10
  track: Đỉều gì đó
    type: MusicRecording
    duration: PT4M49S
    duration ms: 289773
    explicit: false
    by artist: Lê Tâm
    in album: Điều Gì Đó
      type: MusicAlbum
      date published: 1999-01-10
    genre: vietnamese bolero
    genre: v-pop
    isrc code: QZGCD1802252
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-08T15:20:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3c78ca9f3ec38cb61a2a181a51f5a4523b30f6c979f3761c25f384ea40ac41b4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802252
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c78ca9f3ec38cb61a2a181a51f5a4523b30f6c979f3761c25f384ea40ac41b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802252.
      date published: 2026-06-13T13:32:09Z
    audio: Đỉều gì đó
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.35
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.675
      additional property: Energy
        type: PropertyValue
        value: 0.737
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.089
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.044
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.658
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.224
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Dĩ vãng đó vẫn còn
    type: MusicRecording
    duration: PT4M35S
    duration ms: 275733
    explicit: false
    by artist: Lê Tâm
    in album: Điều Gì Đó
      type: MusicAlbum
      date published: 1999-01-10
    genre: vietnamese bolero
    genre: v-pop
    isrc code: QZGCD1802253
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T08:04:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4c58ecb8fa57747b12175b5e9159eafa309ef6d960c733a93b7489c778abd4d7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960368
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960368
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802253
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T08:26:41Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58ecb8fa57747b12175b5e9159eafa309ef6d960c733a93b7489c778abd4d7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZGCD1802253.
      date published: 2026-07-31T08:26:41Z
    audio: Dĩ vãng đó vẫn còn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.683
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.569
      additional property: Energy
        type: PropertyValue
        value: 0.832
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.517
      additional property: Liveness
        type: PropertyValue
        value: 0.147
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: No more love in your eyes
  track: Định nghĩa tình yêu
  track: Nỗi nhớ trong tim
  track: Cho tôi được một lần
album: Tình Khúc Buồn
album: Niệm Khúc Cuối
album: Người Về Bỗng Nhớ
album: Liên Khúc Yêu Anh Bằng Cả Trái Tim - Nếu Có Yêu Tôi - Bây Giờ Tháng Mấy
album: Chị Tôi
album: Và Tôi Cũng Yêu Em
album: Thương Lắm Tóc Dài Ơi
album: Phố Mùa Đông
album: Mưa Chiều Kỷ Niệm
album: Mashup Em Ơi Hà Nội Phố - Lãng Đãng Chiều Đông Hà Nội - Hà Nội Ngày Trở Về
album: Lời Yêu Thương
album: Hướng Về Hà Nội
album: Hà Nội Ngày Tháng Cũ
album: Chiều Đông Matxcova
album: Bài Không Tên Số 7
album: Bài Không Tên Số 3
album: Hãy Yêu Nhau Đi
album: Xin Trả Nợ Người
album: Rồi Mai Tôi Đưa Em
album: Riêng Một Góc Trời
album: Mash Up Xin Còn Gọi Tên Nhau, Nỗi Đau Muộn Màng
album: Bản Tình Cuối
album: Bài Không Tên Số 8
album: Bài Ca Tình Nhớ
album: Biển Nỗi Nhớ Và Em
album: Mùa Thu Cho Em
album: Xin Được Hát Một Mình
album: Tôi Muốn Mang Hồ Gươm Đi
album: Rừng Xưa Đã Khép
album: Nếu Có Yêu Tôi
album: Nhớ Mùa Thu Hà Nội
album: Ngọn Nến
album: Một Dại Khờ Một Tôi
album: Mắt Biếc
album: Mùa Xuân Trên Đỉnh Bình Yên
album: Lại Gần Hôn Anh
album: Hà Nội Ngày Trở Về
album: Cỏ Xót Xa Đưa
album: Về Lại Phố Xưa
album: Phôi Pha
album: Nửa Hồn Thương Đau
album: Những Mùa Đông Yêu Dấu
album: Như Cánh Vạc Bay
album: Như Chiếc Que Diêm
album: Mối Tình Đầu
album: Mơ Về Nơi Xa Lắm
album: Mashup Mơ Về Nơi Xa Lắm - Im Lặng Đêm Hà Nội - Lãng Đãng Chiều Đông Hà Nội
album: Hoa Tím Ngoài Sân
album: Chiếc Lá Cuối Cùng
album: Ngẫu Hứng Sông Hồng
album: Ở Nơi Nào Em Còn Nhớ
album: Tưởng Rằng Đã Quên
album: Tôi Đi Giữa Hoàng Hôn
album: Tình Tự Mùa Xuân
album: Tình Hận
album: Ru Tình
album: Nắng Thủy Tinh
album: Ngỡ Đâu Tình Đã Quên Mình
album: Mashup Một Dại Khờ Một Tôi, Nỗi Nhớ Mùa Đông, Mơ Về Nơi Xa Lắm
album: Mash Up Yêu Anh Bằng Cả Trái Tim và Nếu Có Yêu Tôi
album: Hà Nội Mùa Vắng Những Cơn Mưa
album: Em Ơi Hà Nội Phố

Valence (Positivity)
type: PropertyValue
value: 0.632

Loudness (dB)
type: PropertyValue
value: -10.791

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

No more love in your eyes
type: MusicRecording
duration: PT3M55S
duration ms: 235826
explicit: false
by artist: Lê Tâm
in album: Điều Gì Đó
  type: MusicAlbum
  date published: 1999-01-10
genre: vietnamese bolero
genre: v-pop
isrc code: QZGCD1802255
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:25:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf8637fe07c99cd4c435bc6df3fc8cf0a050e8816c2268a9706bebf7e33e562a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802255
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8637fe07c99cd4c435bc6df3fc8cf0a050e8816c2268a9706bebf7e33e562a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802255.
  date published: 2026-07-08T03:20:19Z
audio: No more love in your eyes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.337
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.609
  additional property: Energy
    type: PropertyValue
    value: 0.717
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.106
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.417
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.832
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Định nghĩa tình yêu
type: MusicRecording
duration: PT4M37S
duration ms: 277493
explicit: false
by artist: Lê Tâm
in album: Điều Gì Đó
  type: MusicAlbum
  date published: 1999-01-10
genre: vietnamese bolero
genre: v-pop
isrc code: QZGCD1802256
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:21:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e7a0d70311d957712b4f5d8daa179e0cc524033c990a3e5957c94b3cb7048d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802256
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7a0d70311d957712b4f5d8daa179e0cc524033c990a3e5957c94b3cb7048d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802256.
  date published: 2026-07-08T03:20:19Z
audio: Định nghĩa tình yêu
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.565
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.713
  additional property: Energy
    type: PropertyValue
    value: 0.735
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.046
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.041
  additional property: Liveness
    type: PropertyValue
    value: 0.058
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.772
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.035
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Nỗi nhớ trong tim
type: MusicRecording
duration: PT3M39S
duration ms: 219253
explicit: false
by artist: Lê Tâm
in album: Điều Gì Đó
  type: MusicAlbum
  date published: 1999-01-10
genre: vietnamese bolero
genre: v-pop
isrc code: QZGCD1802258
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:59:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee3a0543bdc2217397f2207c56e3efedac47ab1dbd636409fbbc68b6bed458b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960376
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960376
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802258
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:09:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a0543bdc2217397f2207c56e3efedac47ab1dbd636409fbbc68b6bed458b1. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802258.
  date published: 2026-07-31T09:09:19Z
audio: Nỗi nhớ trong tim
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.55
  additional property: Musical Key
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Tình Khúc Buồn
type: MusicAlbum
date published: 2024-06-24

Niệm Khúc Cuối
type: MusicAlbum
date published: 2024-06-24

Người Về Bỗng Nhớ
type: MusicAlbum
date published: 2024-06-24

Liên Khúc Yêu Anh Bằng Cả Trái Tim - Nếu Có Yêu Tôi - Bây Giờ Tháng Mấy
type: MusicAlbum
date published: 2024-06-24

Chị Tôi
type: MusicAlbum
date published: 2024-06-24

Và Tôi Cũng Yêu Em
type: MusicAlbum
date published: 2024-06-24

Thương Lắm Tóc Dài Ơi
type: MusicAlbum
date published: 2024-06-24

Phố Mùa Đông
type: MusicAlbum
date published: 2024-06-24

Mưa Chiều Kỷ Niệm
type: MusicAlbum
date published: 2024-06-24

Mashup Em Ơi Hà Nội Phố - Lãng Đãng Chiều Đông Hà Nội - Hà Nội Ngày Trở Về
type: MusicAlbum
date published: 2024-06-24

Lời Yêu Thương
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date published: 2024-06-24

Hướng Về Hà Nội
type: MusicAlbum
date published: 2024-06-24

Hà Nội Ngày Tháng Cũ
type: MusicAlbum
date published: 2024-06-24

Chiều Đông Matxcova
type: MusicAlbum
date published: 2024-06-24

Bài Không Tên Số 7
type: MusicAlbum
date published: 2024-06-24

Bài Không Tên Số 3
type: MusicAlbum
date published: 2024-06-24

Hãy Yêu Nhau Đi
type: MusicAlbum
date published: 2024-06-24

Xin Trả Nợ Người
type: MusicAlbum
date published: 2024-06-24

Rồi Mai Tôi Đưa Em
type: MusicAlbum
date published: 2024-06-24

Riêng Một Góc Trời
type: MusicAlbum
date published: 2024-06-24

Mash Up Xin Còn Gọi Tên Nhau, Nỗi Đau Muộn Màng
type: MusicAlbum
date published: 2024-06-24

Bản Tình Cuối
type: MusicAlbum
date published: 2024-06-24

Bài Không Tên Số 8
type: MusicAlbum
date published: 2024-06-24

Bài Ca Tình Nhớ
type: MusicAlbum
date published: 2024-06-24

Biển Nỗi Nhớ Và Em
type: MusicAlbum
date published: 2024-06-24

Mùa Thu Cho Em
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date published: 2024-06-24

Xin Được Hát Một Mình
type: MusicAlbum
date published: 2024-06-24

Tôi Muốn Mang Hồ Gươm Đi
type: MusicAlbum
date published: 2024-06-24

Rừng Xưa Đã Khép
type: MusicAlbum
date published: 2024-06-24

Nếu Có Yêu Tôi
type: MusicAlbum
date published: 2024-06-24

Nhớ Mùa Thu Hà Nội
type: MusicAlbum
date published: 2024-06-24

Ngọn Nến
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date published: 2024-06-24

Một Dại Khờ Một Tôi
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date published: 2024-06-24

Mắt Biếc
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date published: 2024-06-24

Mùa Xuân Trên Đỉnh Bình Yên
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date published: 2024-06-24

Lại Gần Hôn Anh
type: MusicAlbum
date published: 2024-06-24

Hà Nội Ngày Trở Về
type: MusicAlbum
date published: 2024-06-24

Cỏ Xót Xa Đưa
type: MusicAlbum
date published: 2024-06-24

Về Lại Phố Xưa
type: MusicAlbum
date published: 2024-06-24

Phôi Pha
type: MusicAlbum
date published: 2024-06-24

Nửa Hồn Thương Đau
type: MusicAlbum
date published: 2024-06-24

Những Mùa Đông Yêu Dấu
type: MusicAlbum
date published: 2024-06-24

Như Cánh Vạc Bay
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date published: 2024-06-24

Như Chiếc Que Diêm
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date published: 2024-06-24

Mối Tình Đầu
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date published: 2024-06-24

Mơ Về Nơi Xa Lắm
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date published: 2024-06-24

Mashup Mơ Về Nơi Xa Lắm - Im Lặng Đêm Hà Nội - Lãng Đãng Chiều Đông Hà Nội
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Hoa Tím Ngoài Sân
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date published: 2024-06-24

Chiếc Lá Cuối Cùng
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Ngẫu Hứng Sông Hồng
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Ở Nơi Nào Em Còn Nhớ
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Tưởng Rằng Đã Quên
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date published: 2024-06-24

Tôi Đi Giữa Hoàng Hôn
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date published: 2024-06-24

Tình Tự Mùa Xuân
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Tình Hận
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Ru Tình
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Nắng Thủy Tinh
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Ngỡ Đâu Tình Đã Quên Mình
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Mashup Một Dại Khờ Một Tôi, Nỗi Nhớ Mùa Đông, Mơ Về Nơi Xa Lắm
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Mash Up Yêu Anh Bằng Cả Trái Tim và Nếu Có Yêu Tôi
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Hà Nội Mùa Vắng Những Cơn Mưa
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Em Ơi Hà Nội Phố
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date published: 2024-06-24

Bây Giờ Tháng Mấy
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Buồn Ơi Chào Mi
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Đêm Thấy Ta Là Thác Đổ
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Đoản Khúc Thu Hà Nội
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Xin Mặt Trời Ngủ Yên
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date published: 2024-06-24

Tình Xưa Gái Huế
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date published: 2024-06-24

Tuổi Đá Buồn
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date published: 2024-06-24

Mưa Hồng
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Gọi Tên Bốn Mùa
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Dấu Tình Sầu
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Chiều Đông Matxcova
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Bâng Khuâng Chiều Nội Trú
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Bài Không Tên Số 4
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Xin Còn Gọi Tên Nhau
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Về Đây Nghe Em
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date published: 2024-06-24

Vườn Xưa
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date published: 2024-06-24

Trong Nỗi Đau Tình Cờ
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Ru Em Từng Ngón Xuân Nồng
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Nỗi Đau Muộn Màng
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Niềm Đau Chôn Dấu
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Như Đã Dấu Yêu
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Một Dại Khờ Một Tôi
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Mùa Hè Đẹp Nhất
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date published: 2024-06-24

Lời Tỏ Tình Của Mùa Xuân
type: MusicAlbum
date published: 2024-06-24

Khúc Mùa Thu
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date published: 2024-06-24

Gửi Người Em Gái Miền Nam
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date published: 2024-06-24

Gửi Gió Cho Mây Ngàn Bay
type: MusicAlbum
date published: 2024-06-24

Em Còn Nhớ Hay Em Đã Quên
type: MusicAlbum
date published: 2024-06-24

Bài Không Tên Số 2
type: MusicAlbum
date published: 2024-06-24

Riêng Một Góc Trời
type: MusicAlbum
date published: 2024-06-24

Tình Hờ
type: MusicAlbum
date published: 2024-06-24

Thuở Ấy Có Em
type: MusicAlbum
date published: 2024-06-24

Ru Em Bằng Tiếng Sóng
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date published: 2024-06-24

Phiến Đá Sầu
type: MusicAlbum
date published: 2024-06-24

Nguyệt Ca
type: MusicAlbum
date published: 2024-06-24

Mỗi Ngày Tôi Chọn Một Niềm Vui
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date published: 2024-06-24

Mắt Lệ Cho Người
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Mơ Hoa
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Lãng Đãng Chiều Đông Hà Nội
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Kiếp Nào Có Yêu Nhau
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Hà Nội Mùa Lá Bay
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Giọt Nắng Bên Thềm
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date published: 2024-06-24

Bên Đời Hiu Quạnh
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date published: 2024-06-24

Biển Nhớ
type: MusicAlbum
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Đường Xa Ướt Mưa
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Đời Đá Vàng
type: MusicAlbum
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Yêu
type: MusicAlbum
date published: 2024-06-24

Vĩnh Biệt Mùa Hè
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Thuyền Và Biển
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Như Một Lời Chia Tay
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Một Lần Nào Cho Tôi Gặp Lại Em
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Cô Đơn
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Biết Bao Giờ Trở Lại
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Về Lại Phố Xưa
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Ru Đời Đi Nhé
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Nỗi Nhớ Mùa Đông
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Mash up Nếu Có Yêu Tôi, Bây Giờ Tháng Mấy
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Giữ Đời Cho Nhau
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Câu Chuyện Nhỏ Của Tôi
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Biển Nỗi Nhớ Và Em
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Chiều Đông Matxcova
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Trả Lại Anh Yêu
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Đường Xa Ướt Mưa
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Vì Đó Là Em
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date published: 2024-06-24

Tôi Ru Em Ngủ
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Tình Xa
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Thà Như Giọt Mưa
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Ngậm Ngùi
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Cơn Gió Thoảng
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Đưa Em Tìm Động Hoa Vàng
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Điều Giản Dị
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Mashup Phôi Pha - Hạ Trắng
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Im Lặng Đêm Hà Nội
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Hạ Trắng
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Giọt Lệ Cho Ngàn Sau
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Chiều Nay Không Có Em
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Bài Không Tên Cuối Cùng
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Thuyền Và Biển
type: MusicAlbum
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Ở Trọ
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date published: 2024-06-24

Mơ Hoa
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date published: 2024-06-24

Đồng Xanh
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date published: 2024-06-24

Áo Lụa Hà Đông
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date published: 2024-06-24

Và Con Tim Đã Vui Trở Lại
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Tưởng Niệm
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date published: 2024-06-24

Tình Nhớ
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date published: 2024-06-24

Tâm Sự Gửi Về Đâu
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date published: 2024-06-24

Tiếng Mưa Đêm
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Ru Mãi Ngàn Năm
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Ngọn Nến
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Người Yêu Dấu Ơi
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Mùa Thu Cho Em
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Mashup Mỗi Ngày Tôi Chọn Một Niềm Vui - Về Đây Nghe Em
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Liên khúc Hãy Yêu Nhau Đi, Tình Sầu, Tuổi Đá Buồn, Phôi Pha
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Hà Nội Và Em Khi Thu Chớm Đông Sang
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Em Đã Thấy Mùa Xuân Chưa
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Còn Yêu Em Mãi
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Chuyện Tình Của Biển
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Bài Không Tên Trở Lại
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Ướt Mi
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Đêm Đông
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Trên Ngọn Tình Sầu
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Mộng Dưới Hoa
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Mẹ
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Hoài Cảm
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Hoa Có Vàng Nơi Ấy
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Gửi Người Em Gái
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Diễm Xưa
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Chân Tình
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Chiều Một Mình Qua Phố
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Bài Tình Ca Cho Em
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Bài Thánh Ca Buồn
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Bài Không Tên Số 5
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Đêm Nhớ Về Sài Gòn
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Đâu Phải Bởi Mùa Thu
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Điều Giản Dị
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Tình Khúc Thứ Nhất
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Triệu Đóa Hồng
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Một Mai Em Đi
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Mashup Và Tôi Cũng Yêu Em, Và Con Tim Đã Vui Trở Lại
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Lối Cũ Ta Về
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Không Còn Mùa Thu
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Cơn Mưa Phùn
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Chuyện Tình Buồn
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Tình Sầu
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Bài Ngợi Ca Tình Yêu
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07acd15c783d2f694dcece7f637c3d121e3077d91827ab7045c7fcca3e9ba03. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZGCD1802029.
  date published: 2026-07-29T22:12:10Z
audio: Tâm hồn cô đơn
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.329
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.656
  additional property: Energy
    type: PropertyValue
    value: 0.593
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.156
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.057
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.227
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.403
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Về với yêu thương
type: MusicRecording
duration: PT3M41S
duration ms: 221533
explicit: false
by artist: Lê Tâm
in album: Bên Em Là Biển Rộng
  type: MusicAlbum
  date published: 1997-01-01
isrc code: QZGCD1802031
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T22:00:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x58d5592db89760985af87e6dc2330b9c031f31376221e0f47877b1e960fa3d50
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802031
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5592db89760985af87e6dc2330b9c031f31376221e0f47877b1e960fa3d50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGCD1802031.
  date published: 2026-07-08T03:22:41Z
audio: Về với yêu thương
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.163
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.798
  additional property: Energy
    type: PropertyValue
    value: 0.926
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.008
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.772
  additional property: Liveness
    type: PropertyValue
    value: 0.241
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.53
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.454
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Tình thư của lính
type: MusicRecording
duration: PT4M41S
duration ms: 281386
explicit: false
by artist: Gia Huy
by artist: Lê Tâm
by artist: Lâm Nhật Tiến
in album: Lời Nói Yêu Đầu Tiên
  type: MusicAlbum
  date published: 1999-01-10
isrc code: QZGCD1802248
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:13:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x17742000802e05fc0861caf7a742d4a7cce8051751f988ca30f7fbf74a07f806
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802248
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17742000802e05fc0861caf7a742d4a7cce8051751f988ca30f7fbf74a07f806. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1802248.
  date published: 2026-07-08T03:20:19Z
audio: Tình thư của lính
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.773
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.689
  additional property: Energy
    type: PropertyValue
    value: 0.659
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.03
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.179
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.791
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.088
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major