Keung To
type: MusicGroup
genre: cantopop
genre: c-pop
description: Keung To (Chinese: ; born 30 April 1999) is a Hong Kong singer, actor, and a member of the Hong Kong boy band group Mirror. He rose to fame after winning ViuTV's reality talent competition Good Night
popularity: 66
followers: 131390
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1fa3ab74e40338ee8ad98602244977f179359f20ca80b34f971b123b85356b12
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/284e24e6-d5b8-4290-9b3a-4da5ea9badba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/284e24e6-d5b8-4290-9b3a-4da5ea9badba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/284e24e6-d5b8-4290-9b3a-4da5ea9badba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x1fa3ab74e40338ee8ad98602244977f179359f20ca80b34f971b123b85356b12. 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/284e24e6-d5b8-4290-9b3a-4da5ea9badba.json and https://artists.proofprofile.net/proofs/artist/284e24e6-d5b8-4290-9b3a-4da5ea9badba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: 一號種籽
  type: MusicAlbum
  date published: 2019-06-21
album: B.M.G.
  type: MusicAlbum
  date published: 2019-07-12
album: 亞特蘭提斯
  type: MusicAlbum
  date published: 2019-09-06
album: 一天多一點
  type: MusicAlbum
  date published: 2020-01-03
album: 蒙著嘴說愛你
  type: MusicAlbum
  date published: 2020-04-30
album: 一天多一點
  type: MusicAlbum
  date published: 2020-06-01
album: B.M.G.
  type: MusicAlbum
  date published: 2020-06-01
album: 亞特蘭提斯
  type: MusicAlbum
  date published: 2020-06-01
album: 一號種籽
  type: MusicAlbum
  date published: 2020-06-01
album: 蒙著嘴說愛你
  type: MusicAlbum
  date published: 2020-06-01
album: 孤獨病
  type: MusicAlbum
  date published: 2020-09-02
album: 愛情簽證申請
  type: MusicAlbum
  date published: 2020-11-15
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    type: MusicRecording
    duration: PT3M12S
    duration ms: 192067
    explicit: false
    by artist: Keung To
    in album: 愛情簽證申請
      type: MusicAlbum
      date published: 2020-11-15
    genre: cantopop
    genre: c-pop
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    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:53:06Z
    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
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      date published: 2026-06-13T12:53:06Z
    audio: 愛情簽證申請
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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: 5
      additional property: Danceability
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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
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Key Name
        type: PropertyValue
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      additional property: Mode Name
        type: PropertyValue
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album: Master Class
  type: MusicAlbum
  date published: 2021-03-19
album: Dear My Friend,
  type: MusicAlbum
  date published: 2021-08-06
album: 特務肥姜 2.0
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  date published: 2021-08-27
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    duration: PT3M16S
    duration ms: 196504
    explicit: false
    by artist: Keung To
    in album: 特務肥姜 2.0
      type: MusicAlbum
      date published: 2021-08-27
    genre: cantopop
    genre: c-pop
    isrc code: HKG482110495
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    additional property: CopyrightStatus
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      value: registered
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      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc30d9882a210fe524105fcf8a9df996756e3d600e521bd12ea4b2b275b9fcdc
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    additional property: OTSBitcoinBlock
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      value: https://blockstream.info/api/block-height/953515
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 特務肥姜 2.0
album: 愛不作聲（電視劇超感應學園片尾曲）
album: I Know (feat. AGA)
album: 鏡中鏡
album: 作品的說話
album: 風雨不改 (電影《阿媽有咗第二個》主題曲)
album: 無人不知的戰果 (ViuTV劇集: 季前賽主題曲)
album: 追
album: 沒有翅膀的天使
album: Dummy
album: 濤
album: 風雨不改
album: 岩巉
album: 黑月
album: 好得太過份
album: Every Single Time
album: I Need You In My Li(f)e (ViuTV劇集 「無用的謊言」主題曲)
album: 白果
album: On a SunnyDay
album: 流浪星球
track: 蒙著嘴說愛你
track: 孤獨病
track: 愛情簽證申請
track: 流星雨 - 2020 YouTube Music Night
track: 追
track: 痴漢之歌 (ViuTV劇集: 季前賽片尾曲)

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG482110495

OTSTimestamp
type: PropertyValue
value: 2026-06-13T12:53:06Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc30d9882a210fe524105fcf8a9df996756e3d600e521bd12ea4b2b275b9fcdc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG482110495.
date published: 2026-06-13T12:53:06Z

特務肥姜 2.0
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 152.067
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.645
additional property: Energy
  type: PropertyValue
  value: 0.923
additional property: Speechiness
  type: PropertyValue
  value: 0.051
additional property: Acousticness
  type: PropertyValue
  value: 0.121
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.217
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.656
additional property: Loudness (dB)
  type: PropertyValue
  value: -8.086
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

愛不作聲（電視劇超感應學園片尾曲）
type: MusicAlbum
date published: 2021-09-06

I Know (feat. AGA)
type: MusicAlbum
date published: 2021-12-16

鏡中鏡
type: MusicAlbum
date published: 2022-01-02

作品的說話
type: MusicAlbum
date published: 2022-04-30

風雨不改 (電影《阿媽有咗第二個》主題曲)
type: MusicAlbum
date published: 2022-08-17

無人不知的戰果 (ViuTV劇集: 季前賽主題曲)
type: MusicAlbum
date published: 2022-11-18

追
type: MusicAlbum
date published: 2023-03-16

沒有翅膀的天使
type: MusicAlbum
date published: 2023-04-28

Dummy
type: MusicAlbum
date published: 2023-05-29

濤
type: MusicAlbum
date published: 2023-08-01

風雨不改
type: MusicAlbum
date published: 2023-09-26

岩巉
type: MusicAlbum
date published: 2023-11-27

黑月
type: MusicAlbum
date published: 2024-01-12

好得太過份
type: MusicAlbum
date published: 2024-04-30

Every Single Time
type: MusicAlbum
date published: 2024-08-07

I Need You In My Li(f)e (ViuTV劇集 「無用的謊言」主題曲)
type: MusicAlbum
date published: 2024-12-19

白果
type: MusicAlbum
date published: 2025-01-03

On a SunnyDay
type: MusicAlbum
date published: 2025-04-30

流浪星球
type: MusicAlbum
date published: 2025-09-02

蒙著嘴說愛你
type: MusicRecording
duration: PT4M0S
duration ms: 240549
explicit: false
by artist: Keung To
in album: One and All
  type: MusicAlbum
  date published: 2021-01-20
isrc code: HKG481810351
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T03:57:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6683f6eefc98d132623a797fa1798ea7393cef8780b8f6a84d40e52cc336646d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG481810351
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 0x6683f6eefc98d132623a797fa1798ea7393cef8780b8f6a84d40e52cc336646d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG481810351.
  date published: 2026-07-02T03:30:09Z
audio: 蒙著嘴說愛你
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  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: 0.636
  additional property: Energy
    type: PropertyValue
    value: 0.598
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.484
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.101
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

孤獨病
type: MusicRecording
duration: PT4M13S
duration ms: 253862
explicit: false
by artist: Keung To
in album: One and All
  type: MusicAlbum
  date published: 2021-01-20
isrc code: HKG482010445
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T10:59:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x293173c6fec27ba29ff389950dafbdde59cb28f01cc92dade5719eed026a88ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG482010445
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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 0x293173c6fec27ba29ff389950dafbdde59cb28f01cc92dade5719eed026a88ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG482010445.
  date published: 2026-07-02T03:55:08Z
audio: 孤獨病
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.016
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.598
  additional property: Energy
    type: PropertyValue
    value: 0.525
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.189
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.325
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.452
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

愛情簽證申請
type: MusicRecording
duration: PT3M13S
duration ms: 193841
explicit: false
by artist: Keung To
in album: One and All
  type: MusicAlbum
  date published: 2021-01-20
isrc code: HKG482010455
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T20:10:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x593e7e3aa91203561792b7dad35fce485de861b3722ce28d7fb1c38d2f3e1e19
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG482010455
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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 0x593e7e3aa91203561792b7dad35fce485de861b3722ce28d7fb1c38d2f3e1e19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG482010455.
  date published: 2026-07-02T03:55:08Z
audio: 愛情簽證申請
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流星雨 - 2020 YouTube Music Night
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by artist: Gin Lee
by artist: Keung To
in album: 流星雨 (2020 YouTube Music Night)
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  date published: 2021-03-18
genre: cantopop
genre: malaysian-mandopop
isrc code: HKUM72100031
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12d94628e95677f1c8ec408c5506787b815bd2248db2b8d2f5e6c30d2ee3eac. 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/HKUM72100031.
  date published: 2026-06-13T13:32:09Z
audio: 流星雨 - 2020 YouTube Music Night
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追
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duration: PT5M13S
duration ms: 313944
explicit: false
by artist: Keung To
in album: REMEMBERING Leslie
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  date published: 2023-03-23
isrc code: HKUM72300042
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fecc2475dec79e7aa71fde97d31774e5bd41caa4113a3ff3cd0379d955abfd. 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/HKUM72300042.
  date published: 2026-07-08T03:20:19Z
audio: 追
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
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    type: PropertyValue
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  additional property: Danceability
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痴漢之歌 (ViuTV劇集: 季前賽片尾曲)
type: MusicRecording
duration: PT2M40S
duration ms: 160609
explicit: false
by artist: Keung To
by artist: Edan 呂爵安
by artist: Stanley Yau 邱士縉
by artist: Louis Cheung
by artist: Fatboy
by artist: 193
in album: 痴漢之歌 (ViuTV劇集: 季前賽片尾曲)
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  date published: 2022-11-18
isrc code: HKG482210675
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c56c898990569b6355f582d9872688719fac035ebbdac05d89d67da16e3fb. 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/HKG482210675.
  date published: 2026-06-13T13:32:09Z
audio: 痴漢之歌 (ViuTV劇集: 季前賽片尾曲)
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