Ayako Fuji
type: MusicGroup
genre: enka
genre: kayokyoku
description: (real name , née , born May 10, 1961) is a Japanese enka singer. She is signed onto Sony Music Japan. Born in Kakunodate, Akita, Fuji graduated from Akita Prefectural Kakunodate South High School.藤あや
popularity: 28
followers: 8675
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc73e72914f9e30795398e4f1385154ee5b8dff194c3c7e0aa7d48ce5ca402aa6
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/d26e5733-93cb-4646-ae7a-660460aa7438.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d26e5733-93cb-4646-ae7a-660460aa7438.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d26e5733-93cb-4646-ae7a-660460aa7438
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e72914f9e30795398e4f1385154ee5b8dff194c3c7e0aa7d48ce5ca402aa6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d26e5733-93cb-4646-ae7a-660460aa7438.json and https://artists.proofprofile.net/proofs/artist/d26e5733-93cb-4646-ae7a-660460aa7438.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xc73e72914f9e30795398e4f1385154ee5b8dff194c3c7e0aa7d48ce5ca402aa6","name":"Ayako Fuji","registered_at":"2026-06-12T10:34:38Z","symbol":"NIM0271516","token_address":"0xf7ad6660aed72af4a759e37057770f0d81afd0ff","type":"artist","uuid":"d26e5733-93cb-4646-ae7a-660460aa7438"}
album: おんな
  type: MusicAlbum
  date published: 1989-09-21
album: 雨夜酒
  type: MusicAlbum
  date published: 1991-03-21
album: こころ酒
  type: MusicAlbum
  date published: 1992-09-01
  track: こころ酒
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254666
    explicit: false
    by artist: Ayako Fuji
    in album: こころ酒
      type: MusicAlbum
      date published: 1992-09-01
    genre: enka
    genre: kayokyoku
    isrc code: JPSR09184219
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:40:54+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0xb852b4f7f4532609ce0a38ac9714bf9b028881acbb7d4c52052c6f31623053ed
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958242
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR09184219
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:41:56Z
    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 0xb852b4f7f4532609ce0a38ac9714bf9b028881acbb7d4c52052c6f31623053ed. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:41:56Z), 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/JPSR09184219.
      date published: 2026-07-16T07:41:56Z
    audio: こころ酒
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.393
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.439
      additional property: Energy
        type: PropertyValue
        value: 0.44
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: こころ酒 (オリジナル・カラオケ)
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256000
    explicit: false
    by artist: Ayako Fuji
    in album: こころ酒
      type: MusicAlbum
      date published: 1992-09-01
    genre: enka
    genre: kayokyoku
    isrc code: JPSR09184218
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR09184218
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x762b258397a18830bfdb999672c51e26965697a6688751ec81234418379d95f6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPSR09184218.
      date published: 2026-07-05T18:48:28Z
    audio: こころ酒 (オリジナル・カラオケ)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.518
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.538
      additional property: Energy
        type: PropertyValue
        value: 0.338
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: むらさき雨情
album: 女泣川
album: 花のワルツ
album: み・れ・ん
album: おばこ巡礼歌
album: 紅
album: うたかたの恋
album: 雪 深深
album: 薄幸花
album: 女のまごころ
album: くちづけ
album: ふたり花
album: かげろう
album: ふたりの絆
album: 恋酔酒
album: 流氷恋唄
album: 寄りそい橋
album: 曼珠沙華
album: 花びら慕情
album: 雪荒野
album: 港子守歌
album: 宵待草
album: 無情の酒
album: 紅い糸
album: あや子のお国自慢だよ～がんばろな東北！！～
album: 心の襞
album: 夾竹桃
album: 忘却の雨／最後の恋物語
album: まごころの花
album: 泣き鏡
album: WOMAN
album: 北へ・・・ひとり旅/新月
album: わすれない
album: 浮雲ふたつ
album: THE SHOW TIME
album: 海峡しぐれ
album: 笑う月/浮き世ばなし
album: 麗人草
album: 夕霧岬
album: たそがれ綺麗 / からたちの小径
album: からたちの小径 / たそがれ綺麗
album: 命の花よ
album: 素肌 / 素顔
album: 秋田音頭－AKITA・ONDO－
album: ふたり道
album: 夢のまにまに
album: 藤あや子 特選演歌・ヒット全曲集
album: 鳥
album: 女がひとり
album: 藤あや子ベストヒット全曲集
album: Ayako Fuji Cover Songs 喝彩～KASSAI～
album: 雪の花
album: 藤あや子 ザ・ベスト
album: 想い出づくり / 小さな鐘の音～ラ・カンパネラ～
album: 藤あや子 珠玉の艶歌 全曲集
track: 秋田の行事 (feat. 柳葉敏郎, 藤あや子, 佐々木希 & 秋田県人会)
track: 謝肉祭

秋田の行事 (feat. 柳葉敏郎, 藤あや子, 佐々木希 & 秋田県人会)
type: MusicRecording
duration: PT4M5S
duration ms: 245433
explicit: false
by artist: Yu Takahashi
by artist: 秋田県人会
by artist: Ayako Fuji
by artist: Nozomi Sasaki
by artist: Toshiro Yanagiba
in album: 秋田の行事 (feat. 柳葉敏郎, 藤あや子, 佐々木希 & 秋田県人会)
  type: MusicAlbum
  date published: 2022-09-07
genre: j-pop
isrc code: JPWP02201292
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T07:51:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b191698bb8d47f539d56612f4153ab64553cd5ea97c3a070b7e69eb6ce609d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP02201292
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b191698bb8d47f539d56612f4153ab64553cd5ea97c3a070b7e69eb6ce609d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPWP02201292.
  date published: 2026-07-02T05:09:12Z
audio: 秋田の行事 (feat. 柳葉敏郎, 藤あや子, 佐々木希 & 秋田県人会)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.104
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.417
  additional property: Energy
    type: PropertyValue
    value: 0.933
  additional property: Speechiness
    type: PropertyValue
    value: 0.103
  additional property: Acousticness
    type: PropertyValue
    value: 0.427
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.547
  additional property: Loudness (dB)
    type: PropertyValue
    value: -6.952
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

謝肉祭
type: MusicRecording
duration: PT4M29S
duration ms: 269386
explicit: false
by artist: Ayako Fuji
in album: 山口百恵トリビュート・セレクション
  type: MusicAlbum
  date published: 2012-10-03
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc0dec62eca9d79f35e2682f35583f8d66fe3ed0bc13b29126835068bc2c8a6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPP401100228.
  date published: 2026-07-22T17:48:40Z
audio: 謝肉祭
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.435
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.63
  additional property: Energy
    type: PropertyValue
    value: 0.719
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.101
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.559
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.346
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: JPP401100228
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 959159
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-22T17:48:40+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401100228
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959159
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959159
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T17:48:40+00:00
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

Acousticness
type: PropertyValue
value: 0.189

Instrumentalness
type: PropertyValue
value: 0.347

Liveness
type: PropertyValue
value: 0.116

Valence (Positivity)
type: PropertyValue
value: 0.595

Loudness (dB)
type: PropertyValue
value: -12.495

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

むらさき雨情
type: MusicAlbum
date published: 1993-04-01
track: むらさき雨情
  type: MusicRecording
  duration: PT5M0S
  duration ms: 300693
  explicit: false
  by artist: Ayako Fuji
  in album: むらさき雨情
    type: MusicAlbum
    date published: 1993-04-01
  genre: enka
  genre: kayokyoku
  isrc code: JPSR09150061
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T03:28:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x32a38fe48408e3aa3d30aa13da854db71059e7b32129aab627bd355df207c29e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR09150061
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T10:04:33Z
  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 0x32a38fe48408e3aa3d30aa13da854db71059e7b32129aab627bd355df207c29e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPSR09150061.
    date published: 2026-07-04T10:04:33Z
  audio: むらさき雨情
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 148.08
    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: 0.382
    additional property: Energy
      type: PropertyValue
      value: 0.412
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.734
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.218
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.451
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.379
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
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女泣川
type: MusicAlbum
date published: 1994-04-01

花のワルツ
type: MusicAlbum
date published: 1994-07-21

み・れ・ん
type: MusicAlbum
date published: 1995-05-21

おばこ巡礼歌
type: MusicAlbum
date published: 1996-05-22

紅
type: MusicAlbum
date published: 1996-08-21

うたかたの恋
type: MusicAlbum
date published: 1997-03-31

雪 深深
type: MusicAlbum
date published: 1998-02-25
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  duration ms: 304000
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  by artist: Ayako Fuji
  in album: 雪 深深
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    date published: 1998-02-25
  genre: enka
  genre: kayokyoku
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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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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-22T06:35:40Z
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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: Valence (Positivity)
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薄幸花
type: MusicAlbum
date published: 1998-07-15

女のまごころ
type: MusicAlbum
date published: 1999-02-17

くちづけ
type: MusicAlbum
date published: 2000-02-23

ふたり花
type: MusicAlbum
date published: 2000-08-30

かげろう
type: MusicAlbum
date published: 2001-03-14

ふたりの絆
type: MusicAlbum
date published: 2001-08-29

恋酔酒
type: MusicAlbum
date published: 2002-05-22

流氷恋唄
type: MusicAlbum
date published: 2002-08-28

寄りそい橋
type: MusicAlbum
date published: 2003-03-26

曼珠沙華
type: MusicAlbum
date published: 2003-09-18

花びら慕情
type: MusicAlbum
date published: 2004-02-18

雪荒野
type: MusicAlbum
date published: 2004-09-29

港子守歌
type: MusicAlbum
date published: 2005-05-18

宵待草
type: MusicAlbum
date published: 2006-03-01

無情の酒
type: MusicAlbum
date published: 2007-03-21

紅い糸
type: MusicAlbum
date published: 2007-09-19

あや子のお国自慢だよ～がんばろな東北！！～
type: MusicAlbum
date published: 2008
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  genre: kayokyoku
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T01:43:49Z
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心の襞
type: MusicAlbum
date published: 2008-05-21

夾竹桃
type: MusicAlbum
date published: 2008-05-21

忘却の雨／最後の恋物語
type: MusicAlbum
date published: 2009-09-02

まごころの花
type: MusicAlbum
date published: 2010-05-12

泣き鏡
type: MusicAlbum
date published: 2011-02-16

WOMAN
type: MusicAlbum
date published: 2011-04-20

北へ・・・ひとり旅/新月
type: MusicAlbum
date published: 2011-09-28

わすれない
type: MusicAlbum
date published: 2012-05-23

浮雲ふたつ
type: MusicAlbum
date published: 2013-01-23

THE SHOW TIME
type: MusicAlbum
date published: 2013-10-23

海峡しぐれ
type: MusicAlbum
date published: 2014-01-08

笑う月/浮き世ばなし
type: MusicAlbum
date published: 2015-03-04

麗人草
type: MusicAlbum
date published: 2015-08-26

夕霧岬
type: MusicAlbum
date published: 2016-01-06

たそがれ綺麗 / からたちの小径
type: MusicAlbum
date published: 2017-01-11

からたちの小径 / たそがれ綺麗
type: MusicAlbum
date published: 2017-01-11

命の花よ
type: MusicAlbum
date published: 2017-08-23

素肌 / 素顔
type: MusicAlbum
date published: 2018-04-11

秋田音頭－AKITA・ONDO－
type: MusicAlbum
date published: 2019-01-01

ふたり道
type: MusicAlbum
date published: 2019-11-27

夢のまにまに
type: MusicAlbum
date published: 2021-05-26

藤あや子 特選演歌・ヒット全曲集
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-11T12:44:25Z
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    additional property: Danceability
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    additional property: Speechiness
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track: あや子のお国自慢だよ～がんばろな東北！！～
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-18T12:14:37Z
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鳥
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-16T06:29:25Z
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女がひとり
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藤あや子ベストヒット全曲集
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-18T18:05:01Z
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.196
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: くちづけ
  type: MusicRecording
  duration: PT4M51S
  duration ms: 291453
  explicit: false
  by artist: Ayako Fuji
  in album: 藤あや子ベストヒット全曲集
    type: MusicAlbum
    date published: 2023-11-08
  genre: enka
  genre: kayokyoku
  isrc code: JPSR09916202
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T19:16:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5f4fc6e7b09c238404892061f1187013d88f3a031580129c7f80074dbfa8284e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR09916202
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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 0x5f4fc6e7b09c238404892061f1187013d88f3a031580129c7f80074dbfa8284e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPSR09916202.
    date published: 2026-07-05T19:27:56Z
  audio: くちづけ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 150.534
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.268
    additional property: Energy
      type: PropertyValue
      value: 0.475
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.335
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.146
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.119
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.196
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: たそがれ綺麗
  type: MusicRecording
  duration: PT3M54S
  duration ms: 234266
  explicit: false
  by artist: Ayako Fuji
  in album: 藤あや子ベストヒット全曲集
    type: MusicAlbum
    date published: 2023-11-08
  genre: enka
  genre: kayokyoku
  isrc code: JPP401600403
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T19:19:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3028ef4031a131afea3c97added2a03a40f1a7ddb5f3f69970087f05a8789d0d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: たそがれ綺麗

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956826

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401600403

OTSTimestamp
type: PropertyValue
value: 2026-07-05T19:27:56Z

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 0x3028ef4031a131afea3c97added2a03a40f1a7ddb5f3f69970087f05a8789d0d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPP401600403.
date published: 2026-07-05T19:27:56Z

たそがれ綺麗
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 115.998
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.642
additional property: Energy
  type: PropertyValue
  value: 0.806
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.344
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.157
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.694
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.52
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

Ayako Fuji Cover Songs 喝彩～KASSAI～
type: MusicAlbum
date published: 2023-12-20

雪の花
type: MusicAlbum
date published: 2024-07-03
track: 雪の花
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262026
  explicit: false
  by artist: Ayako Fuji
  in album: 雪の花
    type: MusicAlbum
    date published: 2024-07-03
  genre: enka
  genre: kayokyoku
  isrc code: JPU902401873
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-30T00:17:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    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/JPU902401873
  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 0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7. 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/JPU902401873.
    date published: 2026-07-05T01:43:49Z
  audio: 雪の花
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.983
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.484
    additional property: Energy
      type: PropertyValue
      value: 0.69
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.671
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.151
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.354
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.256
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

藤あや子 ザ・ベスト
type: MusicAlbum
date published: 2024-11-06
track: 雪の花
  type: MusicRecording
  duration: PT4M19S
  duration ms: 259265
  explicit: false
  by artist: Ayako Fuji
  in album: 藤あや子 ザ・ベスト
    type: MusicAlbum
    date published: 2024-11-06
  genre: enka
  genre: kayokyoku
  isrc code: JPU902401873
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-30T00:17:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956375
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956375
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902401873
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T16:51:38Z
  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 0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPU902401873.
    date published: 2026-07-02T16:51:38Z
  audio: 雪の花
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.493
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.363
    additional property: Energy
      type: PropertyValue
      value: 0.667
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.533
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.128
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.382
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.829
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: 夕霧岬
  type: MusicRecording
  duration: PT5M12S
  duration ms: 312920
  explicit: false
  by artist: Ayako Fuji
  in album: 藤あや子 ザ・ベスト
    type: MusicAlbum
    date published: 2024-11-06
  genre: enka
  genre: kayokyoku
  isrc code: JPP401500356
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T05:49:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xea54444ca2af236c163bfdf2c00a1340a2f079683a08a57572672faa0c8f03fb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958977
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958977
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401500356
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T08:51:48Z
  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 0xea54444ca2af236c163bfdf2c00a1340a2f079683a08a57572672faa0c8f03fb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:51:48Z), 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/JPP401500356.
    date published: 2026-07-21T08:51:48Z
  audio: 夕霧岬
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.176
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.286
    additional property: Energy
      type: PropertyValue
      value: 0.543
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.68
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.374
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.46
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.06
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: うたかたの恋
  type: MusicRecording
  duration: PT4M16S
  duration ms: 256400
  explicit: false
  by artist: Ayako Fuji
  in album: 藤あや子 ザ・ベスト
    type: MusicAlbum
    date published: 2024-11-06
  genre: enka
  genre: kayokyoku
  isrc code: JPSR09700114
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T14:19:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3ad75d85698e0c106ceceead9bc956f3ae17bac9177d4388f8309f89d8399f7f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958905
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: うたかたの恋
track: 夢のまにまに

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958905

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR09700114

OTSTimestamp
type: PropertyValue
value: 2026-07-20T16:14:34Z

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 0x3ad75d85698e0c106ceceead9bc956f3ae17bac9177d4388f8309f89d8399f7f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPSR09700114.
date published: 2026-07-20T16:14:34Z

うたかたの恋
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 82.389
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.379
additional property: Energy
  type: PropertyValue
  value: 0.487
additional property: Speechiness
  type: PropertyValue
  value: 0.03
additional property: Acousticness
  type: PropertyValue
  value: 0.29
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.368
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.237
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.285
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

夢のまにまに
type: MusicRecording
duration: PT3M40S
duration ms: 220640
explicit: false
by artist: Ayako Fuji
in album: 藤あや子 ザ・ベスト
  type: MusicAlbum
  date published: 2024-11-06
genre: enka
genre: kayokyoku
isrc code: JPP402100121
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-30T00:15:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a96a7c48ef68e6ae73b74d42e551f80593e849d0c33145218eb552b02de2566
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956375
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956375
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP402100121
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T16:51:38Z
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 0x9a96a7c48ef68e6ae73b74d42e551f80593e849d0c33145218eb552b02de2566. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPP402100121.
  date published: 2026-07-02T16:51:38Z
audio: 夢のまにまに
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.062
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.455
  additional property: Energy
    type: PropertyValue
    value: 0.448
  additional property: Speechiness
    type: PropertyValue
    value: 0.026
  additional property: Acousticness
    type: PropertyValue
    value: 0.422
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.42
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.856
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

想い出づくり / 小さな鐘の音～ラ・カンパネラ～
type: MusicAlbum
date published: 2025-07-09

藤あや子 珠玉の艶歌 全曲集
type: MusicAlbum
date published: 2025-11-05