とんとことんスタッフ一同
type: MusicGroup
genre: anime
popularity: 13
followers: 782
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-06-15T11:57:35Z
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album: Akiba Maid War Opening Theme Meido Daikaiten / Ending Theme Meido No Komoriuta (TV Size)
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  date published: 2022-10-07
  track: Meido Daikaiten - TV Size
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    by artist: とんとことんスタッフ一同
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      type: MusicAlbum
      date published: 2022-10-07
    genre: anime
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc31291a39ba4c5fdcdf47b6ff52941019c769648524978dfee9f244e1480264. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPZ922210278.
      date published: 2026-07-02T03:55:08Z
    audio: Meido Daikaiten - TV Size
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album: TVアニメ「アキバ冥途戦争」 OPテーマ「メイド大回転」／EDテーマ「冥途の子守唄」 (TV Size)
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  date published: 2022-10-07
  track: メイド大回転 - TV Size
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      date published: 2022-10-07
    genre: anime
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    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
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      date published: 2026-07-06T01:25:57Z
    audio: メイド大回転 - TV Size
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      additional property: Liveness
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album: Akiba Maid War Opening Theme Meido Daikaiten / Ending Theme Meido No Komoriuta
album: TVアニメ「アキバ冥途戦争」 OPテーマ「メイド大回転」／EDテーマ「冥途の子守唄」

Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Akiba Maid War Opening Theme Meido Daikaiten / Ending Theme Meido No Komoriuta
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date published: 2022-11-09
track: Meido No Komoriuta
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  duration: PT4M5S
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  by artist: とんとことんスタッフ一同
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    type: MusicAlbum
    date published: 2022-11-09
  genre: anime
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T01:01:38Z
  audio: Meido No Komoriuta
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    additional property: Mode (Major/Minor)
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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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    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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TVアニメ「アキバ冥途戦争」 OPテーマ「メイド大回転」／EDテーマ「冥途の子守唄」
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date published: 2022-11-09
track: 冥途の子守唄
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    type: MusicAlbum
    date published: 2022-11-09
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91138d90d7fbccf5d17347bfd921af88894bad7d963ec88f6f5a456af6edae7b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ922209779.
    date published: 2026-07-05T12:31:54Z
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