Trung Nghĩa
type: MusicGroup
popularity: 8
followers: 199
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca47c17ae46b07358e82228c7cb760c10e9784548171eea6347162a3048e28be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc59626a-9e72-4d27-9c73-f27a2839209e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc59626a-9e72-4d27-9c73-f27a2839209e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bc59626a-9e72-4d27-9c73-f27a2839209e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca47c17ae46b07358e82228c7cb760c10e9784548171eea6347162a3048e28be","name":"Trung Nghĩa","registered_at":"2026-06-20T17:26:31Z","symbol":"NIM1667323","token_address":"0xf2d05cb415db4fc56ec26bc120194158ac459594","type":"artist","uuid":"bc59626a-9e72-4d27-9c73-f27a2839209e"}
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 0xca47c17ae46b07358e82228c7cb760c10e9784548171eea6347162a3048e28be. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc59626a-9e72-4d27-9c73-f27a2839209e.json and https://artists.proofprofile.net/proofs/artist/bc59626a-9e72-4d27-9c73-f27a2839209e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0xca47c17ae46b07358e82228c7cb760c10e9784548171eea6347162a3048e28be","name":"Trung Nghĩa","registered_at":"2026-06-20T17:26:31Z","symbol":"NIM1667323","token_address":"0xf2d05cb415db4fc56ec26bc120194158ac459594","type":"artist","uuid":"bc59626a-9e72-4d27-9c73-f27a2839209e"}
album: Độc Tấu Guitar Trung Nghĩa 1
  type: MusicAlbum
  date published: 1988-06-25
album: Độc Tấu Guitar Trung Nghĩa 2
  type: MusicAlbum
  date published: 1988-06-25
album: Nhạc Hòa Tấu Êm Dịu
  type: MusicAlbum
  date published: 1993-06-25
  track: Phôi Pha
    type: MusicRecording
    duration: PT5M17S
    duration ms: 317600
    explicit: false
    by artist: Trung Nghĩa
    in album: Nhạc Hòa Tấu Êm Dịu
      type: MusicAlbum
      date published: 1993-06-25
    isrc code: QM9SX1503726
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:47:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfe977d0ee455ab693bf34c440b2993541cdee71e03ae5cb9b22085c569de142b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9SX1503726
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xfe977d0ee455ab693bf34c440b2993541cdee71e03ae5cb9b22085c569de142b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM9SX1503726.
      date published: 2026-07-05T18:48:28Z
    audio: Phôi Pha
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.866
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.477
      additional property: Energy
        type: PropertyValue
        value: 0.411
      additional property: Speechiness
        type: PropertyValue
        value: 0.025
      additional property: Acousticness
        type: PropertyValue
        value: 0.427
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.4
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.205
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.277
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Cơn Mưa Phùn / Bay Đi Cánh Chim Biển
    type: MusicRecording
    duration: PT4M44S
    duration ms: 284266
    explicit: false
    by artist: Trung Nghĩa
    in album: Nhạc Hòa Tấu Êm Dịu
      type: MusicAlbum
      date published: 1993-06-25
    isrc code: QM9SX1503727
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T21:20:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb0948ba14d079fa7a7a21d52ddd34b0fc3bfd3a77c23f010bdf80db2df7dc0a8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959061
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959061
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9SX1503727
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T00:21:27Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0948ba14d079fa7a7a21d52ddd34b0fc3bfd3a77c23f010bdf80db2df7dc0a8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:21:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9SX1503727.
      date published: 2026-07-22T00:21:27Z
    audio: Cơn Mưa Phùn / Bay Đi Cánh Chim Biển
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.174
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.492
      additional property: Energy
        type: PropertyValue
        value: 0.357
      additional property: Speechiness
        type: PropertyValue
        value: 0.025
      additional property: Acousticness
        type: PropertyValue
        value: 0.273
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.52
      additional property: Liveness
        type: PropertyValue
        value: 0.136
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Ru Ta Ngậm Ngùi
album: Hoà Tấu Liên Khúc Mưa
album: Cánh Hoa Nhài
album: Một Ngày Khác
album: Bản Tình Ca Số 2
album: Rồi Em Sẽ Quên
album: Đã Từng Là Yêu Thương
album: Anh Vẫn 2 (feat. JayD)
album: Sài Gòn Chẳng Chờ Chúng Ta
album: Tâm Sự Của Em
album: Em Còn Chờ Ai Tới ? 2
album: Khẽ Trên Cành Hoa Giấy
album: Điều Anh Muốn Nói Đâu Phải
album: Là Em

Valence (Positivity)
type: PropertyValue
value: 0.118

Loudness (dB)
type: PropertyValue
value: -10.5

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Ru Ta Ngậm Ngùi
type: MusicRecording
duration: PT4M58S
duration ms: 298933
explicit: false
by artist: Trung Nghĩa
in album: Nhạc Hòa Tấu Êm Dịu
  type: MusicAlbum
  date published: 1993-06-25
isrc code: QM9SX1503730
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T00:19:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1dad3187fea651304fed243f2c2422003cf729386ac525432cf47a935c429acf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959087
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959087
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM9SX1503730
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T02:05:55Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad3187fea651304fed243f2c2422003cf729386ac525432cf47a935c429acf. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QM9SX1503730.
  date published: 2026-07-22T02:05:55Z
audio: Ru Ta Ngậm Ngùi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.173
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.523
  additional property: Energy
    type: PropertyValue
    value: 0.37
  additional property: Speechiness
    type: PropertyValue
    value: 0.028
  additional property: Acousticness
    type: PropertyValue
    value: 0.219
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.58
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.185
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.559
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Hoà Tấu Liên Khúc Mưa
type: MusicAlbum
date published: 1995-01-02

Cánh Hoa Nhài
type: MusicAlbum
date published: 2021-06-18

Một Ngày Khác
type: MusicAlbum
date published: 2021-06-25

Bản Tình Ca Số 2
type: MusicAlbum
date published: 2021-07-27

Rồi Em Sẽ Quên
type: MusicAlbum
date published: 2021-08-09

Đã Từng Là Yêu Thương
type: MusicAlbum
date published: 2021-08-13

Anh Vẫn 2 (feat. JayD)
type: MusicAlbum
date published: 2021-08-21

Sài Gòn Chẳng Chờ Chúng Ta
type: MusicAlbum
date published: 2021-09-09

Tâm Sự Của Em
type: MusicAlbum
date published: 2021-09-18

Em Còn Chờ Ai Tới ? 2
type: MusicAlbum
date published: 2021-12-01

Khẽ Trên Cành Hoa Giấy
type: MusicAlbum
date published: 2022-02-28

Điều Anh Muốn Nói Đâu Phải
type: MusicAlbum
date published: 2022-04-02

Là Em
type: MusicAlbum
date published: 2022-04-15