Yumiko Takahashi
type: MusicGroup
genre: city pop
genre: kayokyoku
description: is a Japanese actress and singer. She is nicknamed "Good-P" short for Good Personality. She has had prominent roles in a number of television series, feature films and stage productions. As a singer
popularity: 21
followers: 5832
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x067c9ad711021a685cb40b86430b99da37ed664f43f8c20af1097f48bdb6cfae
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/e695f9ab-5905-4aba-a516-12534b96884a.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/e695f9ab-5905-4aba-a516-12534b96884a.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e695f9ab-5905-4aba-a516-12534b96884a
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: 「魔神英雄伝ワタル2」オープニングテーマ Step by Step
  type: MusicAlbum
  date published: 1990
album: Scarlet
  type: MusicAlbum
  date published: 1990
album: Fight！
  type: MusicAlbum
  date published: 1990
album: Scarlet
  type: MusicAlbum
  date published: 1990
album: Scarlet
  type: MusicAlbum
  date published: 1990-12-16
album: TO KI ME KI
  type: MusicAlbum
  date published: 1991
album: 笑顔の魔法
  type: MusicAlbum
  date published: 1991
album: Egao no Maho
  type: MusicAlbum
  date published: 1991
album: 元気！元気！元気！
  type: MusicAlbum
  date published: 1991
album: と♡き☆め♡き
  type: MusicAlbum
  date published: 1991
album: Genki! Genki! Genki!
  type: MusicAlbum
  date published: 1991
album: PEACE!
  type: MusicAlbum
  date published: 1991-07-21
album: コートダジュールで逢いましょう
  type: MusicAlbum
  date published: 1992
album: Achichicchi -fire version-
  type: MusicAlbum
  date published: 1992
album: Cote D'Azur de Aimasho
  type: MusicAlbum
  date published: 1992
album: だいすき
  type: MusicAlbum
  date published: 1992
album: Daisuki
  type: MusicAlbum
  date published: 1992
album: いつか逢おうね
  type: MusicAlbum
  date published: 1992
album: Itsuka Aoune
  type: MusicAlbum
  date published: 1992
album: アチチッチ -fire version-
  type: MusicAlbum
  date published: 1992
album: dream
  type: MusicAlbum
  date published: 1992-03-04
album: Paradise
  type: MusicAlbum
  date published: 1992-07-22
album: Good Love
  type: MusicAlbum
  date published: 1993
album: SINGLE COLLECTION Steps
  type: MusicAlbum
  date published: 1993
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    duration: PT4M9S
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    by artist: Yumiko Takahashi
    in album: SINGLE COLLECTION Steps
      type: MusicAlbum
      date published: 1993
    genre: city pop
    genre: kayokyoku
    isrc code: JPVI09000770
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09000770
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:52:48Z
    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 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 0xe68c00da6feb6fbf81bdd5417dd37c458caa67bf0d58ac4f6dfefacfae5a737a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPVI09000770.
      date published: 2026-07-13T00:52:48Z
    audio: Step by Step
      type: AudioObject
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      additional property: Time Signature
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      additional property: Danceability
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  track: Good Love
    type: MusicRecording
    duration: PT4M0S
    duration ms: 240366
    explicit: false
    by artist: Yumiko Takahashi
    in album: SINGLE COLLECTION Steps
    genre: city pop
    genre: kayokyoku
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    additional property: CopyrightStatus
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Good Love
album: はじまりはいま
album: yell
album: Hajimari wa Ima
album: Reality
album: Prelude
album: そんなのムリ！
album: San Nen Sugita Koro ni wa
album: Good-bye Tears
album: Sonna no Muri!
album: 3年過ぎた頃には
album: 友達でいいから
album: Tomodachi de Ii kara
album: Tenderly
album: Working on Xmas Day
album: 最上級 I LIKE YOU
album: すき...でもすき
album: Suki...Demo Suki
album: Saijokyu I Like You
album: Maketemo Iiyo
album: 負けてもいいよ
album: WILL YOU MARRY ME？
album: WILL YOU MARRY ME?
album: 万事快調
album: 笑ってるだけじゃない
album: 今までどんな恋をしてきたんだろう
album: Waratterudakejanai
album: Imamade Donna Koi wo Shitekitandarou
album: 気分上々
album: ふたりの距離
album: Futari no Kyori
album: 螺旋の月
album: Rasen no Tsuki
album: BEST SELECTION
album: SAIJOKYU GOOD SONGS [30th Anniversary Best Album]
album: 最上級 GOOD SONGS [30th Anniversary Best Album]

Yumiko Takahashi
type: MusicGroup

SINGLE COLLECTION Steps
type: MusicAlbum
date published: 1993

CopyrightID
type: PropertyValue

CopyrightStatus
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value: registered

CopyrightRegisteredAt
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value: 2026-07-20T08:10:57+00:00

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x2aa1e5dc7ed0166f2293e7e2947be0d53828662ba9be5fb59b94851224393d26

OTSHash
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OTSBitcoinBlock
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value: 958850

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958850

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09226950

OTSTimestamp
type: PropertyValue
value: 2026-07-20T08:32:30Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1e5dc7ed0166f2293e7e2947be0d53828662ba9be5fb59b94851224393d26. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/JPVI09226950.
date published: 2026-07-20T08:32:30Z

Good Love
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 107.063
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: 0.648
additional property: Energy
  type: PropertyValue
  value: 0.862
additional property: Speechiness
  type: PropertyValue
  value: 0.06
additional property: Acousticness
  type: PropertyValue
  value: 0.18
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.323
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.679
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.344
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

はじまりはいま
type: MusicAlbum
date published: 1993

SINGLE COLLECTION Steps
type: MusicAlbum
date published: 1993
track: Fight!
  type: MusicRecording
  duration: PT3M31S
  duration ms: 211400
  explicit: false
  by artist: Yumiko Takahashi
  in album: SINGLE COLLECTION Steps
    type: MusicAlbum
    date published: 1993
  genre: city pop
  genre: kayokyoku
  isrc code: JPVI09010100
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbd368b3f4104a924af09068b868d00eeed70391a6293be87fea0cdfc5c2f3757
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958942
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958942
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09010100
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T00:24:07Z
  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 0xbd368b3f4104a924af09068b868d00eeed70391a6293be87fea0cdfc5c2f3757. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPVI09010100.
    date published: 2026-07-21T00:24:07Z
  audio: Fight!
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 158.03
    additional property: Musical Key
      type: PropertyValue
      value: 9
    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
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    additional property: Speechiness
      type: PropertyValue
      value: 0.076
    additional property: Acousticness
      type: PropertyValue
      value: 0.024
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.033
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.5
    additional property: Loudness (dB)
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      value: -5.27
    additional property: Key Name
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Good Love
type: MusicAlbum
date published: 1993

yell
type: MusicAlbum
date published: 1993

Hajimari wa Ima
type: MusicAlbum
date published: 1993

yell
type: MusicAlbum
date published: 1993

Reality
type: MusicAlbum
date published: 1993-03-24

Prelude
type: MusicAlbum
date published: 1993-07-21

そんなのムリ！
type: MusicAlbum
date published: 1994

San Nen Sugita Koro ni wa
type: MusicAlbum
date published: 1994

Good-bye Tears
type: MusicAlbum
date published: 1994

Sonna no Muri!
type: MusicAlbum
date published: 1994

Good-bye Tears
type: MusicAlbum
date published: 1994

3年過ぎた頃には
type: MusicAlbum
date published: 1994

友達でいいから
type: MusicAlbum
date published: 1994

Tomodachi de Ii kara
type: MusicAlbum
date published: 1994

Tenderly
type: MusicAlbum
date published: 1994-07-21

Working on Xmas Day
type: MusicAlbum
date published: 1994-11-23

最上級 I LIKE YOU
type: MusicAlbum
date published: 1995

すき...でもすき
type: MusicAlbum
date published: 1995

Suki...Demo Suki
type: MusicAlbum
date published: 1995

Saijokyu I Like You
type: MusicAlbum
date published: 1995

Maketemo Iiyo
type: MusicAlbum
date published: 1996

負けてもいいよ
type: MusicAlbum
date published: 1996

WILL YOU MARRY ME？
type: MusicAlbum
date published: 1996

WILL YOU MARRY ME?
type: MusicAlbum
date published: 1996

万事快調
type: MusicAlbum
date published: 1996-08-07

笑ってるだけじゃない
type: MusicAlbum
date published: 1997

今までどんな恋をしてきたんだろう
type: MusicAlbum
date published: 1997

Waratterudakejanai
type: MusicAlbum
date published: 1997

Imamade Donna Koi wo Shitekitandarou
type: MusicAlbum
date published: 1997

気分上々
type: MusicAlbum
date published: 1997-11-21

ふたりの距離
type: MusicAlbum
date published: 1998

Futari no Kyori
type: MusicAlbum
date published: 1998

螺旋の月
type: MusicAlbum
date published: 1999

Rasen no Tsuki
type: MusicAlbum
date published: 1999

BEST SELECTION
type: MusicAlbum
date published: 2010
track: Good-bye Tears
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  duration: PT4M7S
  duration ms: 247136
  explicit: false
  by artist: Yumiko Takahashi
  in album: BEST SELECTION
    type: MusicAlbum
    date published: 2010
  genre: city pop
  genre: kayokyoku
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x201ef42dc04e8ee1ef6583e9a592c00ba6cdec4ba54a9882cae4df6c8875ca18
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958714
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09404620
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T09:51:44Z
  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 0x201ef42dc04e8ee1ef6583e9a592c00ba6cdec4ba54a9882cae4df6c8875ca18. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPVI09404620.
    date published: 2026-07-19T09:51:44Z
  audio: Good-bye Tears
    type: AudioObject
    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
      type: PropertyValue
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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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SAIJOKYU GOOD SONGS [30th Anniversary Best Album]
type: MusicAlbum
date published: 2020-10-28

最上級 GOOD SONGS [30th Anniversary Best Album]
type: MusicAlbum
date published: 2020-10-28
track: 友達でいいから (Original Master Ver.)
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    type: MusicAlbum
    date published: 2020-10-28
  genre: city pop
  genre: kayokyoku
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02002257
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0x0fd8aa146692af000e0fc8da0b9bff991621e4fa0a902546e37efb56fb0cc417. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI02002257.
    date published: 2026-07-05T01:12:41Z
  audio: 友達でいいから (Original Master Ver.)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.923
    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: 0.611
    additional property: Energy
      type: PropertyValue
      value: 0.853
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.742
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.138
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.572
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.64
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 虹の彼方に
  type: MusicRecording
  duration: PT4M15S
  duration ms: 255000
  explicit: false
  by artist: Yumiko Takahashi
  in album: 最上級 GOOD SONGS [30th Anniversary Best Album]
    type: MusicAlbum
    date published: 2020-10-28
  genre: city pop
  genre: kayokyoku
  isrc code: JPVI09010110
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T18:35:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x51bf2bb717d1e704c87fe49ed748a30c0e2113cb0b69ccde6d7dd03dc3733b99
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958600
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958600
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09010110
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T19:24:05Z
  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 0x51bf2bb717d1e704c87fe49ed748a30c0e2113cb0b69ccde6d7dd03dc3733b99. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPVI09010110.
    date published: 2026-07-18T19:24:05Z
  audio: 虹の彼方に
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.896
    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: 0.662
    additional property: Energy
      type: PropertyValue
      value: 0.956
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.006
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.27
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.542
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.121
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Good-bye Tears
  type: MusicRecording
  duration: PT4M9S
  duration ms: 249000
  explicit: false
  by artist: Yumiko Takahashi
  in album: 最上級 GOOD SONGS [30th Anniversary Best Album]
    type: MusicAlbum
    date published: 2020-10-28
  genre: city pop
  genre: kayokyoku
  isrc code: JPVI09404620
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T00:10:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x201ef42dc04e8ee1ef6583e9a592c00ba6cdec4ba54a9882cae4df6c8875ca18
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957780
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Good-bye Tears

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957780

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09404620

OTSTimestamp
type: PropertyValue
value: 2026-07-13T00:36:44Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ef42dc04e8ee1ef6583e9a592c00ba6cdec4ba54a9882cae4df6c8875ca18. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPVI09404620.
date published: 2026-07-13T00:36:44Z

Good-bye Tears
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 140.016
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.554
additional property: Energy
  type: PropertyValue
  value: 0.966
additional property: Speechiness
  type: PropertyValue
  value: 0.07
additional property: Acousticness
  type: PropertyValue
  value: 0.596
additional property: Instrumentalness
  type: PropertyValue
  value: 0.005
additional property: Liveness
  type: PropertyValue
  value: 0.077
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.649
additional property: Loudness (dB)
  type: PropertyValue
  value: -2.214
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major