Tốp ca
type: MusicGroup
popularity: 18
followers: 691
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x902415f887ac3c3aa1f8c99d040bdefca759e1357866189e35af8a3b98539092
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953754
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af7a777b-7e2c-42d4-b148-cfbe16c4062d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af7a777b-7e2c-42d4-b148-cfbe16c4062d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af7a777b-7e2c-42d4-b148-cfbe16c4062d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:45:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x902415f887ac3c3aa1f8c99d040bdefca759e1357866189e35af8a3b98539092","name":"Tốp ca","registered_at":"2026-06-14T22:57:06Z","symbol":"NIM0602964","token_address":"0x6424392868df06e3c37286394eb647c7fa069f17","type":"artist","uuid":"af7a777b-7e2c-42d4-b148-cfbe16c4062d"}
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 0x902415f887ac3c3aa1f8c99d040bdefca759e1357866189e35af8a3b98539092. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7a777b-7e2c-42d4-b148-cfbe16c4062d.json and https://artists.proofprofile.net/proofs/artist/af7a777b-7e2c-42d4-b148-cfbe16c4062d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x902415f887ac3c3aa1f8c99d040bdefca759e1357866189e35af8a3b98539092","name":"Tốp ca","registered_at":"2026-06-14T22:57:06Z","symbol":"NIM0602964","token_address":"0x6424392868df06e3c37286394eb647c7fa069f17","type":"artist","uuid":"af7a777b-7e2c-42d4-b148-cfbe16c4062d"}
album: Tuổi ngọc
  type: MusicAlbum
  date published: 2001-01-01
album: Việt Nam Bản Hùng Ca
  type: MusicAlbum
  date published: 2005-01-01
album: Cô bé mùa xuân
  type: MusicAlbum
  date published: 2018-01-01
album: Chiếc thuyền nan
  type: MusicAlbum
  date published: 2018-01-01
  track: Thiếu nhi thế giới liên hoan
    type: MusicRecording
    duration: PT2M33S
    duration ms: 153280
    explicit: false
    by artist: Tốp ca
    in album: Chiếc thuyền nan
      type: MusicAlbum
      date published: 2018-01-01
    isrc code: VNA0F1765054
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T23:33:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea9b82973803ca5c790a7f4315dbd5e0e18845ff5e11dbbe0602df174debd952
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958942
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958942
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1765054
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T02:35:10Z
    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 0xea9b82973803ca5c790a7f4315dbd5e0e18845ff5e11dbbe0602df174debd952. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:35:10Z), 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/VNA0F1765054.
      date published: 2026-07-21T02:35:10Z
    audio: Thiếu nhi thế giới liên hoan
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.096
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.72
      additional property: Energy
        type: PropertyValue
        value: 0.803
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.17
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.282
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Hát Mãi Khúc Quân Hành
  type: MusicAlbum
  date published: 2018-08-20
album: Cô Hát Cháu Nghe Vol. 1
  type: MusicAlbum
  date published: 2018-08-20
album: Tình Yêu Người Lính Trẻ
  type: MusicAlbum
  date published: 2018-08-28
album: Trẻ Mầm Non Ca Hát Vol. 3
  type: MusicAlbum
  date published: 2018-08-29
  track: Quà Mùng 8/3
    type: MusicRecording
    duration: PT1M16S
    duration ms: 76042
    explicit: false
    by artist: Tốp ca
    in album: Trẻ Mầm Non Ca Hát Vol. 3
      type: MusicAlbum
      date published: 2018-08-29
    isrc code: VNA0M1828033
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T07:44:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa428b4ddc3f5159e014b34ed576dedc676ea8db01b155f41048254f50ba94860
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1828033
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T08:19:09Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428b4ddc3f5159e014b34ed576dedc676ea8db01b155f41048254f50ba94860. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/VNA0M1828033.
      date published: 2026-07-18T08:19:09Z
    audio: Quà Mùng 8/3
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 179.618
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.587
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Một Con Vịt
album: Tự Hào Trường Ngô Gia Tự
album: Cháu Vẽ Ông Mặt Trời
album: Cháu Vẽ Ông Mặt Trời 2
album: Bệnh Viện Nguyễn Trãi Mái Nhà Yêu Thương
album: Nha Trang Giải Phóng
album: Vượt Lên Số Phận
album: Tự Hào Việt Nam
album: Hát Về Thành Phố Của Chúng Em
album: Tai Nạn Giao Thông Stop
album: Nỗi Nhớ Rong Rêu
album: Những Nốt Nhạc Mùa Xuân
album: Trống Hội Mừng Xuân
album: Nhạc Hội Chào Hè 2013
album: Tiếng Hát Bạn Bè Mình
album: Hát Mừng Nha Trang Giải Phóng

Energy
type: PropertyValue
value: 0.5

Speechiness
type: PropertyValue
value: 0.037

Acousticness
type: PropertyValue
value: 0.154

Instrumentalness
type: PropertyValue
value: 0.14

Liveness
type: PropertyValue
value: 0.092

Valence (Positivity)
type: PropertyValue
value: 0.924

Loudness (dB)
type: PropertyValue
value: -5.645

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Một Con Vịt
type: MusicRecording
duration: PT1M54S
duration ms: 114468
explicit: false
by artist: Tốp ca
in album: Trẻ Mầm Non Ca Hát Vol. 3
  type: MusicAlbum
  date published: 2018-08-29
isrc code: VNA0M1828040
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T12:04:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15ea42c6762fc2f0192585ca0ba6618203c7d999e502dd94bf225f1188939295
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/VNA0M1828040
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 0x15ea42c6762fc2f0192585ca0ba6618203c7d999e502dd94bf225f1188939295. 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/VNA0M1828040.
  date published: 2026-07-05T01:12:41Z
audio: Một Con Vịt
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.568
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.594
  additional property: Energy
    type: PropertyValue
    value: 0.347
  additional property: Speechiness
    type: PropertyValue
    value: 0.029
  additional property: Acousticness
    type: PropertyValue
    value: 0.194
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.693
  additional property: Liveness
    type: PropertyValue
    value: 0.221
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.491
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.791
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tự Hào Trường Ngô Gia Tự
type: MusicAlbum
date published: 2023-07-28

Cháu Vẽ Ông Mặt Trời
type: MusicAlbum
date published: 2023-11-07

Cháu Vẽ Ông Mặt Trời 2
type: MusicAlbum
date published: 2023-11-07

Bệnh Viện Nguyễn Trãi Mái Nhà Yêu Thương
type: MusicAlbum
date published: 2024-02-02

Nha Trang Giải Phóng
type: MusicAlbum
date published: 2024-05-08

Vượt Lên Số Phận
type: MusicAlbum
date published: 2024-05-08

Tự Hào Việt Nam
type: MusicAlbum
date published: 2024-07-30

Hát Về Thành Phố Của Chúng Em
type: MusicAlbum
date published: 2024-08-02

Tai Nạn Giao Thông Stop
type: MusicAlbum
date published: 2024-08-17

Nỗi Nhớ Rong Rêu
type: MusicAlbum
date published: 2024-08-17

Tai Nạn Giao Thông Stop
type: MusicAlbum
date published: 2024-08-19

Những Nốt Nhạc Mùa Xuân
type: MusicAlbum
date published: 2024-11-23

Trống Hội Mừng Xuân
type: MusicAlbum
date published: 2024-11-23

Nhạc Hội Chào Hè 2013
type: MusicAlbum
date published: 2024-11-24

Tiếng Hát Bạn Bè Mình
type: MusicAlbum
date published: 2025-01-29

Hát Mừng Nha Trang Giải Phóng
type: MusicAlbum
date published: 2025-04-03