empty disc.
type: MusicGroup
popularity: 22
followers: 113
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x49b9189a7768b26906f7c0381f4cd6f315eb5c0ebb319feaf7884e46183d941b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f57e91b7-6c34-4810-ad3d-f123adf626bd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f57e91b7-6c34-4810-ad3d-f123adf626bd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f57e91b7-6c34-4810-ad3d-f123adf626bd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x49b9189a7768b26906f7c0381f4cd6f315eb5c0ebb319feaf7884e46183d941b","name":"empty disc.","registered_at":"2026-06-12T13:48:28Z","symbol":"NIM0316315","token_address":"0x9f07364960c3aed30d368e50cae7db634eb0cf7a","type":"artist","uuid":"f57e91b7-6c34-4810-ad3d-f123adf626bd"}
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 0x49b9189a7768b26906f7c0381f4cd6f315eb5c0ebb319feaf7884e46183d941b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f57e91b7-6c34-4810-ad3d-f123adf626bd.json and https://artists.proofprofile.net/proofs/artist/f57e91b7-6c34-4810-ad3d-f123adf626bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x49b9189a7768b26906f7c0381f4cd6f315eb5c0ebb319feaf7884e46183d941b","name":"empty disc.","registered_at":"2026-06-12T13:48:28Z","symbol":"NIM0316315","token_address":"0x9f07364960c3aed30d368e50cae7db634eb0cf7a","type":"artist","uuid":"f57e91b7-6c34-4810-ad3d-f123adf626bd"}
album: クルトラブル (feat. 原口沙輔, 『ユイカ』)
  type: MusicAlbum
  date published: 2025-02-28
album: プラトニックにね feat. あばらや, 早瀬ノエル(FRUITS ZIPPER)
  type: MusicAlbum
  date published: 2025-03-28
album: Please or Please (feat. 晴いちばん, Ourin)
  type: MusicAlbum
  date published: 2025-06-27
  track: Please or Please (feat. 晴いちばん, Ourin)
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188000
    explicit: false
    by artist: empty disc.
    in album: Please or Please (feat. 晴いちばん, Ourin)
      type: MusicAlbum
      date published: 2025-06-27
    isrc code: JPPO02501896
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T13:03:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb3151321db21aad1bbe1ebc7583afb8542612d233cca5f34405b653a4b03ecb2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02501896
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xb3151321db21aad1bbe1ebc7583afb8542612d233cca5f34405b653a4b03ecb2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPO02501896.
      date published: 2026-07-05T01:12:41Z
    audio: Please or Please (feat. 晴いちばん, Ourin)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 107.984
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.804
      additional property: Energy
        type: PropertyValue
        value: 0.889
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.032
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.074
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.914
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.342
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: マンネリマンネ (feat. picco, 青妃らめ)
  type: MusicAlbum
  date published: 2025-09-26