CIRCUS
type: MusicGroup
genre: city pop
genre: enka
genre: j-pop
genre: kayokyoku
description: A circus is a company of performers who put on diverse entertainment shows that may include clowns, acrobats, trained animals, trapeze acts, musicians, dancers, hoopers, tightrope walkers, jugglers, m
popularity: 32
followers: 26505
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0xc940b48af5556308d43973ce2752f31cb530c223a401f9a718c3f69c1784d986. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0109c9a2-e758-4bdf-b816-29ae89976356.json and https://artists.proofprofile.net/proofs/artist/0109c9a2-e758-4bdf-b816-29ae89976356.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
album: Circus Alfa Music Edition 1978 - 1980
  type: MusicAlbum
  date published: 1978
  track: アメリカン・フィーリング
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206426
    explicit: false
    by artist: CIRCUS
    in album: Circus Alfa Music Edition 1978 - 1980
      type: MusicAlbum
      date published: 1978
    genre: city pop
    genre: enka
    genre: j-pop
    genre: kayokyoku
    isrc code: JPAL07900440
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
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      value: https://explorer.copyrightchains.com/tx/0xbb81bf5963d24c8fe043575cbbdd63c574ba78a4e3fa603adb8971f2d00eb508
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      value: https://blockstream.info/api/block-height/956500
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPAL07900440
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T13:55:21Z
    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 0xbb81bf5963d24c8fe043575cbbdd63c574ba78a4e3fa603adb8971f2d00eb508. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPAL07900440.
      date published: 2026-07-03T13:55:21Z
    audio: アメリカン・フィーリング
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.771
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.564
      additional property: Energy
        type: PropertyValue
        value: 0.676
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.448
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.063
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.638
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.003
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Circus 1
  type: MusicAlbum
  date published: 1978
album: サーカス1
  type: MusicAlbum
  date published: 1978-07-05
album: New Horizon
  type: MusicAlbum
  date published: 1979
album: ニュー・ホライズン
  type: MusicAlbum
  date published: 1979-05-25
album: A LITTLE LIE
  type: MusicAlbum
  date published: 1987
  track: Sweet Memories
    type: MusicRecording
    duration: PT4M38S
    duration ms: 278493
    explicit: false
    by artist: CIRCUS
    in album: A LITTLE LIE
      type: MusicAlbum
      date published: 1987
    genre: city pop
    genre: enka
    genre: j-pop
    genre: kayokyoku
    isrc code: JPFH08701060
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSBitcoinBlock
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:27:02Z
    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 0xe5bbd9aa82ce6242482e9267de1140c9b95c710e31b99f0280544cb51ec79fa6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPFH08701060.
      date published: 2026-07-17T08:27:02Z
    audio: Sweet Memories
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.355
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
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album: WINTER ALBUM
album: WOMAN IN LOVE
album: FASCINATION
album: たったひとつの言葉
album: リエゾン
album: パリのランデブー
album: Heart Of Christmas
album: GOLDEN☆BEST / サーカス 歌の贈り物
album: Sound Circus -HeartV-
album: 最初から今まで（冬のソナタ）
album: サーカス アルファミュージック編 1978～1980
album: しなやかに歌って/ダンシング・シスター
album: 絆 〜KIZUNA〜
album: THE REBORN SONGS～80'sハーモニー～
album: Fun House Years Collection
album: POP STEP 40 〜Futur
album: POP STEP 40 ～Futur
album: アメリカン・フィーリング 2020
album: The one
album: Late summer nostalgia
album: Find Yourself

Time Signature
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value: 3

Danceability
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value: 0.382

Energy
type: PropertyValue
value: 0.243

Speechiness
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value: 0.034

Acousticness
type: PropertyValue
value: 0.767

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.051

Valence (Positivity)
type: PropertyValue
value: 0.134

Loudness (dB)
type: PropertyValue
value: -13.742

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

A LITTLE LIE
type: MusicAlbum
date published: 1987-12-05

WINTER ALBUM
type: MusicAlbum
date published: 1988

WOMAN IN LOVE
type: MusicAlbum
date published: 1988
track: WOMAN IN LOVE
  type: MusicRecording
  duration: PT4M17S
  duration ms: 257933
  explicit: false
  by artist: CIRCUS
  in album: WOMAN IN LOVE
    type: MusicAlbum
    date published: 1988
  genre: city pop
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPFH08801160
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-04T20:11:13+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x8a71b9d2c86c126ffba87faea90521008baaa0fef66befc00d4fcfff7915c7e0
  additional property: OTSHash
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    value: 956728
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956728
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPFH08801160
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:43:49Z
  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 0x8a71b9d2c86c126ffba87faea90521008baaa0fef66befc00d4fcfff7915c7e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPFH08801160.
    date published: 2026-07-05T01:43:49Z
  audio: WOMAN IN LOVE
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.835
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.578
    additional property: Energy
      type: PropertyValue
      value: 0.749
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.024
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.515
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.614
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.358
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor

FASCINATION
type: MusicAlbum
date published: 1989

たったひとつの言葉
type: MusicAlbum
date published: 1991

リエゾン
type: MusicAlbum
date published: 1994-11-26

パリのランデブー
type: MusicAlbum
date published: 1995-09-25

Heart Of Christmas
type: MusicAlbum
date published: 2000-10-07

GOLDEN☆BEST / サーカス 歌の贈り物
type: MusicAlbum
date published: 2003

GOLDEN☆BEST / サーカス 歌の贈り物
type: MusicAlbum
date published: 2003-03-19

Sound Circus -HeartV-
type: MusicAlbum
date published: 2005
track: Mr.サマータイム（acappella version）
  type: MusicRecording
  duration: PT4M55S
  duration ms: 295826
  explicit: false
  by artist: CIRCUS
  in album: Sound Circus -HeartV-
    type: MusicAlbum
    date published: 2005
  genre: city pop
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPP400500341
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T02:28:54+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x27424f15bf7817ad9ef9aa8e6b7d6012fb77df9253e3bef3d5f047fdd9b42061
  additional property: OTSHash
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    type: PropertyValue
    value: https://blockstream.info/api/block-height/958808
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP400500341
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T05:31:46Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27424f15bf7817ad9ef9aa8e6b7d6012fb77df9253e3bef3d5f047fdd9b42061. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:46Z), 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/JPP400500341.
    date published: 2026-07-20T05:31:46Z
  audio: Mr.サマータイム（acappella version）
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.712
    additional property: Energy
      type: PropertyValue
      value: 0.484
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.73
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
      value: 0.124
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.511
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.211
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: しなやかに歌って
  type: MusicRecording
  duration: PT6M27S
  duration ms: 387680
  explicit: false
  by artist: CIRCUS
  in album: Sound Circus -HeartV-
    type: MusicAlbum
    date published: 2005
  genre: city pop
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPP300500261
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T23:46:48+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x2c7a85c37fa0cfdbc8601a01c2de22356d8d2b8c02a54897a32c3fe438a4a025
  additional property: OTSHash
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a85c37fa0cfdbc8601a01c2de22356d8d2b8c02a54897a32c3fe438a4a025. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPP300500261.
    date published: 2026-07-13T00:05:10Z
  audio: しなやかに歌って
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.657
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.558
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.911
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.593
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.161
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

最初から今まで（冬のソナタ）
type: MusicAlbum
date published: 2005
track: 最初から今まで（冬のソナタ）
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  duration: PT4M21S
  duration ms: 261040
  explicit: false
  by artist: CIRCUS
  in album: 最初から今まで（冬のソナタ）
    type: MusicAlbum
    date published: 2005
  genre: city pop
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPP400500357
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP400500357
  additional property: OTSTimestamp
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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: 2026-07-05T04:47:21Z
  audio: 最初から今まで（冬のソナタ）
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Sound Circus -HeartV-
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date published: 2005-07-06

サーカス アルファミュージック編 1978～1980
type: MusicAlbum
date published: 2005-11-30

しなやかに歌って/ダンシング・シスター
type: MusicAlbum
date published: 2006-01-18

しなやかに歌って/ダンシング・シスター
type: MusicAlbum
date published: 2006-01-18

サーカス アルファミュージック編 1978～1980
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track: 愛で殺したい
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  genre: enka
  genre: j-pop
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T19:59:51Z
  audio: 愛で殺したい
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track: 六月の花嫁
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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: 2026-07-05T12:31:54Z
  audio: 六月の花嫁
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絆 〜KIZUNA〜
type: MusicAlbum
date published: 2007-10-03

ニュー・ホライズン
type: MusicAlbum
date published: 2009

サーカス1
type: MusicAlbum
date published: 2013-05-15

THE REBORN SONGS～80'sハーモニー～
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date published: 2013-05-29
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  genre: j-pop
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-15T06:57:12Z
  audio: ミスター･サマータイム
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track: シルエット･ロマンス
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T01:12:41Z
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track: 瑠璃色の地球
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  subject of: OpenTimestamps Proof of Existence
  audio: 瑠璃色の地球

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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK01304340

OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f78db8799a29b9d212d11949f40a916567b0d88617b86eeb0c161e48e115495. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPTK01304340.
date published: 2026-07-06T01:26:17Z

瑠璃色の地球
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additional property: Tempo (BPM)
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additional property: Musical Key
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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: 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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additional property: Liveness
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additional property: Valence (Positivity)
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Fun House Years Collection
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date published: 2014-04-02

Fun House Years Collection
type: MusicAlbum
date published: 2014-04-02

POP STEP 40 〜Futur
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date published: 2018-04-25
track: Mr.サマータイム 2018
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-15T15:44:34Z
  audio: Mr.サマータイム 2018
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POP STEP 40 ～Futur
type: MusicAlbum
date published: 2018-04-25

アメリカン・フィーリング 2020
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date published: 2020-04-29

アメリカン・フィーリング 2020
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date published: 2020-04-29

アメリカン・フィーリング 2020
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date published: 2020-04-29

The one
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date published: 2023-09-27

The one
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date published: 2023-09-27

Late summer nostalgia
type: MusicAlbum
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type: MusicAlbum
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type: MusicAlbum
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type: MusicAlbum
date published: 2023-10-22