Mamiko Takai
type: MusicGroup
genre: city pop
genre: j-pop
genre: kayokyoku
description: Mamiko Takai (高井麻巳子, Takai Mamiko, born December 28, 1966) is a Japanese idol from the eighties, who debuted in 1985 with the J-pop girl band Onyanko Club, and its first sub-group, duo Ushiroyubi Sasa
popularity: 14
followers: 5694
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/bb25837d-3d12-48a8-a268-52e7fd3b3311.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3643cc6c55a1722f4750899206a68225a7dd36ecee4843ada5df1c1e1c6e0c26. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb25837d-3d12-48a8-a268-52e7fd3b3311.json and https://artists.proofprofile.net/proofs/artist/bb25837d-3d12-48a8-a268-52e7fd3b3311.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
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album: Kokoro Biyori
  type: MusicAlbum
  date published: 1987
  track: Kagerou
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234573
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    by artist: Mamiko Takai
    in album: Kokoro Biyori
      type: MusicAlbum
      date published: 1987
    genre: city pop
    genre: j-pop
    genre: kayokyoku
    isrc code: JPPC08704450
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    additional property: CopyrightStatus
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      value: registered
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC08704450
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65c223d8b7e8eb906038d12b59e2082841b0faf79d52b715299e3141b3c769. 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/JPPC08704450.
      date published: 2026-07-04T10:04:33Z
    audio: Kagerou
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        value: 137.279
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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
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.221
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.952
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.138
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: こころ日和
  type: MusicAlbum
  date published: 1987-07-05
  track: かげろう
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234573
    explicit: false
    by artist: Mamiko Takai
    in album: こころ日和
      type: MusicAlbum
      date published: 1987-07-05
    genre: city pop
    genre: j-pop
    genre: kayokyoku
    isrc code: JPPC08704450
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:44:47+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65c223d8b7e8eb906038d12b59e2082841b0faf79d52b715299e3141b3c769. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPC08704450.
      date published: 2026-07-03T21:18:05Z
    audio: かげろう
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.279
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.717
      additional property: Energy
        type: PropertyValue
        value: 0.675
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      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: Watashi no Mamade…
album: Message
album: Komorebi no Season / Kegarenaki Itazura
album: 私のままで・・・
album: 木洩れ陽のシーズン/汚れなき悪戯
album: Itoguchi
album: いとぐち
album: 高井麻巳子ベスト
album: "Takai Mamiko" Dayo !
album: 「高井麻巳子」だよ!
album: "Mamiko Takai" Singles Complete
album: 「高井麻巳子」SINGLESコンプリート
album: 私のままで・・・+シングルコレクション
album: My Colle ! Lite Takai Mamiko
album: Myこれ!Lite 高井麻巳子
album: Mamiko Takai Best
album: Watashi no Mamade + Single Collection

Acousticness
type: PropertyValue
value: 0.221

Instrumentalness
type: PropertyValue
value: 0.012

Liveness
type: PropertyValue
value: 0.109

Valence (Positivity)
type: PropertyValue
value: 0.952

Loudness (dB)
type: PropertyValue
value: -10.138

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Watashi no Mamade…
type: MusicAlbum
date published: 1988
track: Jugatsu no Tabibito
  type: MusicRecording
  duration: PT4M19S
  duration ms: 259398
  explicit: false
  by artist: Mamiko Takai
  in album: Watashi no Mamade…
    type: MusicAlbum
    date published: 1988
  genre: city pop
  genre: j-pop
  genre: kayokyoku
  isrc code: JPPC08707720
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T21:19:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa70dd2decb6f67bcc457ca0a2b58c9e48e47a9ffd1c2242f0438d58ed63a24bf
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 958461
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958461
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC08707720
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T23:18:11Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70dd2decb6f67bcc457ca0a2b58c9e48e47a9ffd1c2242f0438d58ed63a24bf. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPPC08707720.
    date published: 2026-07-17T23:18:11Z
  audio: Jugatsu no Tabibito
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.953
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.659
    additional property: Energy
      type: PropertyValue
      value: 0.312
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.547
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.154
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.568
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.533
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Message
type: MusicAlbum
date published: 1988

Komorebi no Season / Kegarenaki Itazura
type: MusicAlbum
date published: 1988

私のままで・・・
type: MusicAlbum
date published: 1988-01-21

木洩れ陽のシーズン/汚れなき悪戯
type: MusicAlbum
date published: 1988-04-06

Message
type: MusicAlbum
date published: 1988-06-05

Itoguchi
type: MusicAlbum
date published: 1990

いとぐち
type: MusicAlbum
date published: 1990-11-21
track: シンデレラたちへの伝言
  type: MusicRecording
  duration: PT4M2S
  duration ms: 242360
  explicit: false
  by artist: Mamiko Takai
  in album: いとぐち
    type: MusicAlbum
    date published: 1990-11-21
  genre: city pop
  genre: j-pop
  genre: kayokyoku
  isrc code: JPPC08600180
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T18:09:21+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9d24ab915fed16370e5a9f3327cd3bdeba72667494d3b89dea7274cacb15dde3
  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/JPPC08600180
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d24ab915fed16370e5a9f3327cd3bdeba72667494d3b89dea7274cacb15dde3. 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/JPPC08600180.
    date published: 2026-07-05T19:27:56Z
  audio: シンデレラたちへの伝言
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 82.143
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.507
    additional property: Energy
      type: PropertyValue
      value: 0.212
    additional property: Speechiness
      type: PropertyValue
      value: 0.024
    additional property: Acousticness
      type: PropertyValue
      value: 0.467
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.088
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.2
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.183
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

高井麻巳子ベスト
type: MusicAlbum
date published: 2002

"Takai Mamiko" Dayo !
type: MusicAlbum
date published: 2004

「高井麻巳子」だよ!
type: MusicAlbum
date published: 2004-05-19

"Mamiko Takai" Singles Complete
type: MusicAlbum
date published: 2007

「高井麻巳子」SINGLESコンプリート
type: MusicAlbum
date published: 2008-03-26

私のままで・・・+シングルコレクション
type: MusicAlbum
date published: 2008-07-23

My Colle ! Lite Takai Mamiko
type: MusicAlbum
date published: 2010

Myこれ!Lite 高井麻巳子
type: MusicAlbum
date published: 2010-04-21

Mamiko Takai Best
type: MusicAlbum
date published: 2017-11-01

Watashi no Mamade + Single Collection
type: MusicAlbum
date published: 2017-11-01