エルフ
type: MusicGroup
genre: comedy
popularity: 2
followers: 621
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe15d45768956e9df4647ce0bef592b21667243b51f8c0c380bfcb36b605918fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfac24aa-4df8-40ce-bf21-f96b5a35f970.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfac24aa-4df8-40ce-bf21-f96b5a35f970.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cfac24aa-4df8-40ce-bf21-f96b5a35f970
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe15d45768956e9df4647ce0bef592b21667243b51f8c0c380bfcb36b605918fd","name":"エルフ","registered_at":"2026-06-21T00:55:04Z","symbol":"NIM1768958","token_address":"0x87873790f963bba25ec745874b28a0a2e45819ec","type":"artist","uuid":"cfac24aa-4df8-40ce-bf21-f96b5a35f970"}
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 0xe15d45768956e9df4647ce0bef592b21667243b51f8c0c380bfcb36b605918fd. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfac24aa-4df8-40ce-bf21-f96b5a35f970.json and https://artists.proofprofile.net/proofs/artist/cfac24aa-4df8-40ce-bf21-f96b5a35f970.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe15d45768956e9df4647ce0bef592b21667243b51f8c0c380bfcb36b605918fd","name":"エルフ","registered_at":"2026-06-21T00:55:04Z","symbol":"NIM1768958","token_address":"0x87873790f963bba25ec745874b28a0a2e45819ec","type":"artist","uuid":"cfac24aa-4df8-40ce-bf21-f96b5a35f970"}
album: ハートおムービング
  type: MusicAlbum
  date published: 2019-01-30
album: ハートおムービング
  type: MusicAlbum
  date published: 2019-01-30
  track: ハートおムービング
    type: MusicRecording
    duration: PT3M29S
    duration ms: 209651
    explicit: false
    by artist: エルフ
    in album: ハートおムービング
      type: MusicAlbum
      date published: 2019-01-30
    genre: comedy
    isrc code: JPN001900007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T13:31:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2eb5241c5b2eff218458efbd91369b506731f82c908695ed6d471971e0ecf24f
    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/JPN001900007
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb5241c5b2eff218458efbd91369b506731f82c908695ed6d471971e0ecf24f. 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/JPN001900007.
      date published: 2026-07-05T01:12:41Z
    audio: ハートおムービング
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.094
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.44
      additional property: Energy
        type: PropertyValue
        value: 0.819
      additional property: Speechiness
        type: PropertyValue
        value: 0.077
      additional property: Acousticness
        type: PropertyValue
        value: 0.007
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.172
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.63
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.266
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 地球最高すぎて草
  type: MusicAlbum
  date published: 2021-02-24
album: 地球最高すぎて草 feat.相谷レイナ
  type: MusicAlbum
  date published: 2021-02-24
album: まじかるふれーばー
  type: MusicAlbum
  date published: 2025-10-29
album: ギャル電波
  type: MusicAlbum
  date published: 2025-10-29
album: 禁酒期間作れ
  type: MusicAlbum
  date published: 2025-10-29