공찬
type: MusicGroup
popularity: 13
followers: 1087
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf49fa081bf751834072c17bf2fc24a5af14329a1088ecd801d7b54f22366f53
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67d8ed55-f736-4c06-aab7-c5be950357e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67d8ed55-f736-4c06-aab7-c5be950357e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67d8ed55-f736-4c06-aab7-c5be950357e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdf49fa081bf751834072c17bf2fc24a5af14329a1088ecd801d7b54f22366f53","name":"공찬","registered_at":"2026-06-14T15:20:16Z","symbol":"NIM0494029","token_address":"0xf509dfe355c7545c3dac85fb6470142be91bea6b","type":"artist","uuid":"67d8ed55-f736-4c06-aab7-c5be950357e9"}
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 0xdf49fa081bf751834072c17bf2fc24a5af14329a1088ecd801d7b54f22366f53. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67d8ed55-f736-4c06-aab7-c5be950357e9.json and https://artists.proofprofile.net/proofs/artist/67d8ed55-f736-4c06-aab7-c5be950357e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:00:24Z
  text: {"copyright_id":"0xdf49fa081bf751834072c17bf2fc24a5af14329a1088ecd801d7b54f22366f53","name":"공찬","registered_at":"2026-06-14T15:20:16Z","symbol":"NIM0494029","token_address":"0xf509dfe355c7545c3dac85fb6470142be91bea6b","type":"artist","uuid":"67d8ed55-f736-4c06-aab7-c5be950357e9"}
album: Unintentional Love Story (Original Televion Soundtrack) Pt.2
  type: MusicAlbum
  date published: 2023-03-24
  track: Fallen for U - Acoustic Version
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202040
    explicit: false
    by artist: 공찬
    in album: Unintentional Love Story (Original Televion Soundtrack) Pt.2
      type: MusicAlbum
      date published: 2023-03-24
    isrc code: KSA012242587
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T10:19:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x406750450968cd9657fff6bc0cfd4e6e3b343ff7cd1972c94b7373429a994162
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012242587
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x406750450968cd9657fff6bc0cfd4e6e3b343ff7cd1972c94b7373429a994162. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KSA012242587.
      date published: 2026-07-03T19:59:51Z
    audio: Fallen for U - Acoustic Version
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.998
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.722
      additional property: Energy
        type: PropertyValue
        value: 0.487
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.615
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.317
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.679
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.531
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major