とうめいのくに
type: MusicGroup
genre: vocaloid
popularity: 15
followers: 977
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e223dafae2a5935e04219271948d7971d42d9873e9481eec516a569670cd8c. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ad06ff5-fd6c-49f5-9908-ab1484c629c6.json and https://artists.proofprofile.net/proofs/artist/6ad06ff5-fd6c-49f5-9908-ab1484c629c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T20:39:17Z
  text: {"copyright_id":"0x62e223dafae2a5935e04219271948d7971d42d9873e9481eec516a569670cd8c","name":"とうめいのくに","registered_at":"2026-06-14T15:44:04Z","symbol":"NIM0499704","token_address":"0xe62d33f7b24190bee3eff5f0a5d73722acfbc3c5","type":"artist","uuid":"6ad06ff5-fd6c-49f5-9908-ab1484c629c6"}
album: スイセンと酸性雨
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  date published: 2022-07-20
  track: スイセンと酸性雨
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    duration: PT1M12S
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    by artist: とうめいのくに
    in album: スイセンと酸性雨
      type: MusicAlbum
      date published: 2022-07-20
    genre: vocaloid
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02211556
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T20:32:27Z
    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 0xf00bfc2ad12910512af09833b4019086f0dbfa5c0656cfdd9e78d884fda85f6c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPPC02211556.
      date published: 2026-07-15T20:32:27Z
    audio: スイセンと酸性雨
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      additional property: Tempo (BPM)
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        value: 144.835
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        type: PropertyValue
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      additional property: Time Signature
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      additional property: Danceability
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      additional property: Speechiness
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        value: 0.067
      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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album: 夏幽霊
  type: MusicAlbum
  date published: 2022-08-24
album: 透明少女
  type: MusicAlbum
  date published: 2022-12-21
album: 君の夜をくれ(cover)
  type: MusicAlbum
  date published: 2023-03-29
  track: 君の夜をくれ - cover
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    duration: PT3M55S
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    by artist: とうめいのくに
    in album: 君の夜をくれ(cover)
      type: MusicAlbum
      date published: 2023-03-29
    genre: vocaloid
    isrc code: JPPC02310455
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: 2026-07-05T06:15:56+00:00
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02310455
    additional property: OTSTimestamp
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      value: 2026-07-05T10:01:46Z
    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 0x33ce6b48b60543c62764f7d229257fefe80aaffbb8b97b8acc7cb7e316d57ded. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPPC02310455.
      date published: 2026-07-05T10:01:46Z
    audio: 君の夜をくれ - cover
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      additional property: Tempo (BPM)
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        value: 159.991
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      additional property: Danceability
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      additional property: Instrumentalness
      additional property: Liveness
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album: とうめいのくに cover collection vol.1
album: グッバイエヴリワンと恋人
album: 星屑ワンルーム
album: 空奏列車(cover)
album: 花筏
album: 透明の温度

Instrumentalness
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value: 0

Liveness
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value: 0.097

Valence (Positivity)
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value: 0.585

Loudness (dB)
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value: -7.284

Key Name
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value: F

Mode Name
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value: Major

とうめいのくに cover collection vol.1
type: MusicAlbum
date published: 2023-04-26
track: 戯言スピーカー
  type: MusicRecording
  duration: PT4M10S
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  by artist: とうめいのくに
  in album: とうめいのくに cover collection vol.1
    type: MusicAlbum
    date published: 2023-04-26
  genre: vocaloid
  isrc code: JPPC02112029
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  additional property: CopyrightStatus
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  additional property: OTSTimestamp
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    value: 2026-07-03T08:56:35Z
  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 0x78ec55d91f74b2c3d19c1c3d842903b6f8b3c04d395b981a2b0a5f466f000778. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPC02112029.
    date published: 2026-07-03T08:56:35Z
  audio: 戯言スピーカー
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    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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グッバイエヴリワンと恋人
type: MusicAlbum
date published: 2023-06-28

星屑ワンルーム
type: MusicAlbum
date published: 2023-12-20

空奏列車(cover)
type: MusicAlbum
date published: 2024-02-14

花筏
type: MusicAlbum
date published: 2024-03-27

透明の温度
type: MusicAlbum
date published: 2024-08-21