左卓
type: MusicGroup
genre: chinese r&b
genre: c-pop
genre: mandopop
popularity: 5
followers: 1079
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6c3c6a4dcd75a5c82b7f8fb42904da5107aa4c7d41955cdb9e93dc280eb37621
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74f7309f-b6dc-4e8e-9ad4-032b6ec42942.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74f7309f-b6dc-4e8e-9ad4-032b6ec42942.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74f7309f-b6dc-4e8e-9ad4-032b6ec42942
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6c3c6a4dcd75a5c82b7f8fb42904da5107aa4c7d41955cdb9e93dc280eb37621","name":"左卓","registered_at":"2026-06-17T06:22:03Z","symbol":"NIM1308236","token_address":"0xa3bab846df240f9bcdb4d685646439af025b9825","type":"artist","uuid":"74f7309f-b6dc-4e8e-9ad4-032b6ec42942"}
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 0x6c3c6a4dcd75a5c82b7f8fb42904da5107aa4c7d41955cdb9e93dc280eb37621. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74f7309f-b6dc-4e8e-9ad4-032b6ec42942.json and https://artists.proofprofile.net/proofs/artist/74f7309f-b6dc-4e8e-9ad4-032b6ec42942.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x6c3c6a4dcd75a5c82b7f8fb42904da5107aa4c7d41955cdb9e93dc280eb37621","name":"左卓","registered_at":"2026-06-17T06:22:03Z","symbol":"NIM1308236","token_address":"0xa3bab846df240f9bcdb4d685646439af025b9825","type":"artist","uuid":"74f7309f-b6dc-4e8e-9ad4-032b6ec42942"}
album: 電視劇《龍一, 你要怎樣》原聲帶
  type: MusicAlbum
  date published: 2022-07-14
album: 电影《妖神令》原声带
  type: MusicAlbum
  date published: 2024-08-21
album: 鱼生知有你 影视剧原声带
  type: MusicAlbum
  date published: 2023-06-19
album: 女人花
  type: MusicAlbum
  date published: 2021-06-26
album: Golden Girl (Kuromi Remix)
  type: MusicAlbum
  date published: 2020-12-16
album: 掉落的書籤 電視劇《愛的釐米》插曲
  type: MusicAlbum
  date published: 2020-11-23
album: 天堂超市
  type: MusicAlbum
  date published: 2020-10-30
album: 《親愛的藥王大人》影視原聲帶
  type: MusicAlbum
  date published: 2020-08-12
album: Golden Girl
  type: MusicAlbum
  date published: 2020-07-17
album: I Feel Down
  type: MusicAlbum
  date published: 2019-11-22
  track: I Feel Down
album: 世界
  type: MusicAlbum
  date published: 2021-01-28

I Feel Down
type: MusicRecording
duration: PT2M50S
duration ms: 170378
explicit: false
by artist: 左卓
in album: I Feel Down
  type: MusicAlbum
  date published: 2019-11-22
genre: mandopop
genre: chinese-r-b
genre: c-pop
isrc code: TWCC31903571
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T14:53:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x387ecc3147aed72fa465cbd9a69a44dca23de5e665934f45f01bca801b1079f6
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/TWCC31903571
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387ecc3147aed72fa465cbd9a69a44dca23de5e665934f45f01bca801b1079f6. 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/TWCC31903571.
  date published: 2026-07-02T03:55:08Z
audio: I Feel Down
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.775
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.758
  additional property: Energy
    type: PropertyValue
    value: 0.483
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.283
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.381
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.895
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor