LUKA
type: MusicGroup
popularity: 3
followers: 159
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x59e9317a83c7002ca3f5acbc0a0a203ec7f28471c4e21d3d0188a522d4d58a28
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa24c13f-0f17-4350-96d2-0b81d94b7adf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa24c13f-0f17-4350-96d2-0b81d94b7adf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa24c13f-0f17-4350-96d2-0b81d94b7adf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
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 0x59e9317a83c7002ca3f5acbc0a0a203ec7f28471c4e21d3d0188a522d4d58a28. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa24c13f-0f17-4350-96d2-0b81d94b7adf.json and https://artists.proofprofile.net/proofs/artist/fa24c13f-0f17-4350-96d2-0b81d94b7adf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: 愛まかせ
  type: MusicAlbum
  date published: 2023-05-24
album: 宇宙船メモリー
  type: MusicAlbum
  date published: 2023-08-09
album: ISLAND
  type: MusicAlbum
  date published: 2024-02-14
album: アイランド
  type: MusicAlbum
  date published: 2024-02-14
album: If I'm In Love
  type: MusicAlbum
  date published: 2024-05-29
album: もしもいま恋をして
  type: MusicAlbum
  date published: 2024-05-29
album: 夏の煌めき
  type: MusicAlbum
  date published: 2024-08-07
album: The Glimmer of Summer
  type: MusicAlbum
  date published: 2024-08-07
album: ぼくは冒険者
  type: MusicAlbum
  date published: 2025-01-01
  track: ぼくは冒険者
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215337
    explicit: false
    by artist: LUKA
    in album: ぼくは冒険者
      type: MusicAlbum
      date published: 2025-01-01
    isrc code: SGW502269233
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T04:54:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdd29d730d4049539a05595d53dfd3fdc7c32527e549416e3f7c56c7ab56c063c
    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/SGW502269233
    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 0xdd29d730d4049539a05595d53dfd3fdc7c32527e549416e3f7c56c7ab56c063c. 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/SGW502269233.
      date published: 2026-07-06T06:56:49Z
    audio: ぼくは冒険者
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.436
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.531
      additional property: Energy
        type: PropertyValue
        value: 0.706
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.037
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.205
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.566
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.965
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: City Dancer
  type: MusicAlbum
  date published: 2025-05-14