千晴
type: MusicGroup
genre: j-rap
popularity: 2
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x635fb0c5146ce595a9149659256ad488d50353a6bbf11707903b32d7c5f0bb8b
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/77dfdda5-0447-4781-92be-ea51aa6b250d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77dfdda5-0447-4781-92be-ea51aa6b250d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/77dfdda5-0447-4781-92be-ea51aa6b250d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x635fb0c5146ce595a9149659256ad488d50353a6bbf11707903b32d7c5f0bb8b","name":"千晴","registered_at":"2026-06-17T07:27:40Z","symbol":"NIM1323895","token_address":"0x50647a6ed5623cdfafb284ea09d1126a3c4d5cf9","type":"artist","uuid":"77dfdda5-0447-4781-92be-ea51aa6b250d"}
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 0x635fb0c5146ce595a9149659256ad488d50353a6bbf11707903b32d7c5f0bb8b. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77dfdda5-0447-4781-92be-ea51aa6b250d.json and https://artists.proofprofile.net/proofs/artist/77dfdda5-0447-4781-92be-ea51aa6b250d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0x635fb0c5146ce595a9149659256ad488d50353a6bbf11707903b32d7c5f0bb8b","name":"千晴","registered_at":"2026-06-17T07:27:40Z","symbol":"NIM1323895","token_address":"0x50647a6ed5623cdfafb284ea09d1126a3c4d5cf9","type":"artist","uuid":"77dfdda5-0447-4781-92be-ea51aa6b250d"}
album: ありふれたい
  type: MusicAlbum
  date published: 2022-03-02
  track: ありふれたい
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147159
    explicit: false
    by artist: 千晴
    in album: ありふれたい
      type: MusicAlbum
      date published: 2022-03-02
    genre: j-rap
    isrc code: TCJPR2220443
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:38:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xca7e97a4f8a2efcef86a5c14806341ab5e0a60b86f684535d292b6450232a088
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2220443
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0xca7e97a4f8a2efcef86a5c14806341ab5e0a60b86f684535d292b6450232a088. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPR2220443.
      date published: 2026-07-06T06:56:49Z
    audio: ありふれたい
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.049
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.747
      additional property: Energy
        type: PropertyValue
        value: 0.464
      additional property: Speechiness
        type: PropertyValue
        value: 0.263
      additional property: Acousticness
        type: PropertyValue
        value: 0.026
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.124
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.487
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.286
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor