Cây Viết Chì
type: MusicGroup
popularity: 6
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x06cebe1c4b5d55af714666b66224007a8274ef08bdf597c67f001ad46efb3100
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953895
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953895
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f1b8fff-77fe-41b5-8468-041bd3d1201f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f1b8fff-77fe-41b5-8468-041bd3d1201f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0f1b8fff-77fe-41b5-8468-041bd3d1201f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:46:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x06cebe1c4b5d55af714666b66224007a8274ef08bdf597c67f001ad46efb3100","name":"Cây Viết Chì","registered_at":"2026-06-15T18:52:26Z","symbol":"NIM0799998","token_address":"0x6e30b4025940864f12c3e770279b0c5e403dc696","type":"artist","uuid":"0f1b8fff-77fe-41b5-8468-041bd3d1201f"}
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 0x06cebe1c4b5d55af714666b66224007a8274ef08bdf597c67f001ad46efb3100. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f1b8fff-77fe-41b5-8468-041bd3d1201f.json and https://artists.proofprofile.net/proofs/artist/0f1b8fff-77fe-41b5-8468-041bd3d1201f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0x06cebe1c4b5d55af714666b66224007a8274ef08bdf597c67f001ad46efb3100","name":"Cây Viết Chì","registered_at":"2026-06-15T18:52:26Z","symbol":"NIM0799998","token_address":"0x6e30b4025940864f12c3e770279b0c5e403dc696","type":"artist","uuid":"0f1b8fff-77fe-41b5-8468-041bd3d1201f"}
album: Lần Đầu (Là Lần Cuối)
  type: MusicAlbum
  date published: 2024-04-18
album: Kiếp Mèo
  type: MusicAlbum
  date published: 2024-07-18
album: Kiếp Mèo
  type: MusicAlbum
  date published: 2024-07-18
album: Em Về Tinh Khôi
  type: MusicAlbum
  date published: 2025-07-19
  track: Em Về Tinh Khôi
    type: MusicRecording
    duration: PT5M28S
    duration ms: 328526
    explicit: false
    by artist: Cây Viết Chì
    in album: Em Về Tinh Khôi
      type: MusicAlbum
      date published: 2025-07-19
    isrc code: US38Y2558550
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:57:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x52ca0f61cb9239ab2943a9861f2a353c65164430293d2d9c19fc8dc2010d0754
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2558550
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T23:28:02Z
    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 0x52ca0f61cb9239ab2943a9861f2a353c65164430293d2d9c19fc8dc2010d0754. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US38Y2558550.
      date published: 2026-07-03T23:28:02Z
    audio: Em Về Tinh Khôi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.909
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.408
      additional property: Energy
        type: PropertyValue
        value: 0.378
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.149
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.118
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.199
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.033
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major