張之愷
type: MusicGroup
popularity: 8
followers: 255
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2ef8b8832ea236174c71b65e0cb6462dbab80fefa7fd382b3e4e368fd7cb0641
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/63788f9b-9f6d-4b51-80e9-57dce80e86c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63788f9b-9f6d-4b51-80e9-57dce80e86c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63788f9b-9f6d-4b51-80e9-57dce80e86c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2ef8b8832ea236174c71b65e0cb6462dbab80fefa7fd382b3e4e368fd7cb0641","name":"張之愷","registered_at":"2026-06-17T00:17:55Z","symbol":"NIM1221330","token_address":"0x74bce0a759d86a49342842c041533d774f2ff1d9","type":"artist","uuid":"63788f9b-9f6d-4b51-80e9-57dce80e86c3"}
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 0x2ef8b8832ea236174c71b65e0cb6462dbab80fefa7fd382b3e4e368fd7cb0641. 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/63788f9b-9f6d-4b51-80e9-57dce80e86c3.json and https://artists.proofprofile.net/proofs/artist/63788f9b-9f6d-4b51-80e9-57dce80e86c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2ef8b8832ea236174c71b65e0cb6462dbab80fefa7fd382b3e4e368fd7cb0641","name":"張之愷","registered_at":"2026-06-17T00:17:55Z","symbol":"NIM1221330","token_address":"0x74bce0a759d86a49342842c041533d774f2ff1d9","type":"artist","uuid":"63788f9b-9f6d-4b51-80e9-57dce80e86c3"}
album: 飛魚樂園
  type: MusicAlbum
  date published: 2001-04-18
album: 元氣好眠1 - 夜夜好眠
  type: MusicAlbum
  date published: 2010-12-28
album: 元氣好眠4-睡眠引導
  type: MusicAlbum
  date published: 2010-12-28
album: 元氣好眠3 - 深 睡眠
  type: MusicAlbum
  date published: 2010-12-28
album: 天天練愛咒
  type: MusicAlbum
  date published: 2011-02-23
  track: 天天練愛(簡修儀軌)
    type: MusicRecording
    duration: PT8M24S
    duration ms: 504306
    explicit: false
    by artist: 張之愷
    in album: 天天練愛咒
      type: MusicAlbum
      date published: 2011-02-23
    isrc code: TWF651100001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T21:16:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7bc6032a3d9f1b2e6efede44e651071daabf660312f8c71b3a08e5e99a80cb3b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958785
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958785
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWF651100001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:40:06Z
    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
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc6032a3d9f1b2e6efede44e651071daabf660312f8c71b3a08e5e99a80cb3b. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/TWF651100001.
      date published: 2026-07-19T21:40:06Z
    audio: 天天練愛(簡修儀軌)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 69.588
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.18
      additional property: Energy
        type: PropertyValue
        value: 0.325
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.683
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.004
      additional property: Liveness
        type: PropertyValue
        value: 0.131
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.191
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.255
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 氣血養生音樂:運氣
  type: MusicAlbum
  date published: 2014-04-20
album: 氣血養生音樂:補氣
  type: MusicAlbum
  date published: 2014-04-20
album: 浮遊太空 - 432 Hz七天睡眠充電療癒音樂
  type: MusicAlbum
  date published: 2022-10-28
  track: 時之間
    type: MusicRecording
    duration: PT11M11S
    duration ms: 671000
    explicit: false
    by artist: 張之愷
    in album: 浮遊太空 - 432 Hz七天睡眠充電療癒音樂
      type: MusicAlbum
      date published: 2022-10-28
    isrc code: TWC012211561
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:47:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x11705bb2ba53ce07cd437edfde55076e440f6642c728e966734dc82b22b94b9b
    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/TWC012211561
    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 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 0x11705bb2ba53ce07cd437edfde55076e440f6642c728e966734dc82b22b94b9b. 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/TWC012211561.
      date published: 2026-07-05T18:48:28Z
    audio: 時之間
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 67.526
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.215
      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

Energy
type: PropertyValue
value: 0.246

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.955

Instrumentalness
type: PropertyValue
value: 0.939

Liveness
type: PropertyValue
value: 0.061

Valence (Positivity)
type: PropertyValue
value: 0.037

Loudness (dB)
type: PropertyValue
value: -16.777

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major