张楚涵
type: MusicGroup
genre: c-pop
popularity: 5
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76cbf54c837f6ee9777a06c1b29d286d221e21064cc9a055b151272eeb07650f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f601e07e-a056-49ce-9a03-6b0429f34b0d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f601e07e-a056-49ce-9a03-6b0429f34b0d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f601e07e-a056-49ce-9a03-6b0429f34b0d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x76cbf54c837f6ee9777a06c1b29d286d221e21064cc9a055b151272eeb07650f","name":"张楚涵","registered_at":"2026-06-21T15:24:26Z","symbol":"NIM1955188","token_address":"0x270395050d569f7b6605ba2dc66799e73333ec85","type":"artist","uuid":"f601e07e-a056-49ce-9a03-6b0429f34b0d"}
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 0x76cbf54c837f6ee9777a06c1b29d286d221e21064cc9a055b151272eeb07650f. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f601e07e-a056-49ce-9a03-6b0429f34b0d.json and https://artists.proofprofile.net/proofs/artist/f601e07e-a056-49ce-9a03-6b0429f34b0d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x76cbf54c837f6ee9777a06c1b29d286d221e21064cc9a055b151272eeb07650f","name":"张楚涵","registered_at":"2026-06-21T15:24:26Z","symbol":"NIM1955188","token_address":"0x270395050d569f7b6605ba2dc66799e73333ec85","type":"artist","uuid":"f601e07e-a056-49ce-9a03-6b0429f34b0d"}
album: 若即若离
  type: MusicAlbum
  date published: 2025-05-09
album: 庞加莱重现
  type: MusicAlbum
  date published: 2025-05-31
  track: 庞加莱重现
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245666
    explicit: false
    by artist: 张楚涵
    in album: 庞加莱重现
      type: MusicAlbum
      date published: 2025-05-31
    genre: c-pop
    isrc code: FRX282564710
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T08:23:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb240234d28a7772fcd1c91dbca0e0114af726ca34c25e1067d2be1ed2a17b3aa
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958388
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958388
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282564710
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T09:14:21Z
    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 0xb240234d28a7772fcd1c91dbca0e0114af726ca34c25e1067d2be1ed2a17b3aa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282564710 — a six-check JSON result.
      date published: 2026-07-17T09:14:21Z
    audio: 庞加莱重现
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.032
      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: 0.607
      additional property: Energy
        type: PropertyValue
        value: 0.634
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.468
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.244
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.362
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.647
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 脱缰
  type: MusicAlbum
  date published: 2025-06-15