Negicco
type: MusicGroup
genre: city pop
genre: j-pop
genre: shibuya-kei
description: is a female idol music group created in July 2003. It is composed today of three members: Nao, Megu and Kaede. The group is from Niigata, Japan, and was created for the promotion of the local green o
popularity: 22
followers: 17874
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x72f44553bc4ebd30f15bcab91edf53c4670bbaac096b319e6edcb62af81c68da
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f44553bc4ebd30f15bcab91edf53c4670bbaac096b319e6edcb62af81c68da. 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/5c2710ab-eaa3-4a09-8fa9-d115eee36033.json and https://artists.proofprofile.net/proofs/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
album: GET IT ON!
  type: MusicAlbum
  date published: 2011-07-20
album: GET IT ON!
  type: MusicAlbum
  date published: 2011-07-20
album: 恋のEXPRESS TRAIN
  type: MusicAlbum
  date published: 2011-11-02
album: 恋のEXPRESS TRAIN
  type: MusicAlbum
  date published: 2011-11-02
album: Negicco 2003～2012 -BEST-
  type: MusicAlbum
  date published: 2012-02-22
album: Negicco 2003～2012 -BEST-
  type: MusicAlbum
  date published: 2012-02-22
album: Negicco 2003~2012 -BEST-
  type: MusicAlbum
  date published: 2012-02-22
album: あなたとPop With You!
  type: MusicAlbum
  date published: 2012-06-20
album: anata-to-pop with you
  type: MusicAlbum
  date published: 2012-06-20
album: あなたとPop With You!
  type: MusicAlbum
  date published: 2012-06-20
album: 愛のタワー・オブ・ラヴ
  type: MusicAlbum
  date published: 2013-02-13
album: ai-no-tower of love
  type: MusicAlbum
  date published: 2013-02-13
album: アイドルばかり聴かないで
  type: MusicAlbum
  date published: 2013-05-29
album: アイドルばかり聴かないで
  type: MusicAlbum
  date published: 2013-05-29
album: Melody Palette
  type: MusicAlbum
  date published: 2013-07-17
album: Melody Palette
  type: MusicAlbum
  date published: 2013-07-17
album: ときめきのヘッドライナー
  type: MusicAlbum
  date published: 2013-11-06
album: triple wonderland
  type: MusicAlbum
  date published: 2014-04-16
album: トリプル ! WONDERLAND
  type: MusicAlbum
  date published: 2014-04-16
album: sunshine nihonkai
  type: MusicAlbum
  date published: 2014-07-22
album: サンシャイン日本海
  type: MusicAlbum
  date published: 2014-07-22
album: ときめきのヘッドライナー
  type: MusicAlbum
  date published: 2014-08-01
album: トリプル ! WONDERLAND
  type: MusicAlbum
  date published: 2014-08-01
album: 愛のタワー・オブ・ラヴ
  type: MusicAlbum
  date published: 2014-08-01
album: hikari-no-spur
  type: MusicAlbum
  date published: 2014-12-02
album: 光のシュプール
  type: MusicAlbum
  date published: 2014-12-02
album: 光のシュプール
  type: MusicAlbum
  date published: 2014-12-03
album: Rice&Snow
  type: MusicAlbum
  date published: 2015-01-20
album: Rice&Snow
  type: MusicAlbum
  date published: 2015-01-20
album: Rice&Snow
  type: MusicAlbum
  date published: 2015-01-21
  track: トリプル！WONDERLAND
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    duration: PT4M34S
    duration ms: 274279
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    by artist: Negicco
    in album: Rice&Snow
      type: MusicAlbum
      date published: 2015-01-21
    genre: city pop
    genre: j-pop
    genre: shibuya-kei
    isrc code: JPE871400683
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T03:05:20Z
    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 0x70aca6ebaa7a6ab706d0291613b1933fbec84714587b7608c2e11b048253b1ec. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:20Z), 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/JPE871400683.
      date published: 2026-07-17T03:05:20Z
    audio: トリプル！WONDERLAND
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      additional property: Tempo (BPM)
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Instrumentalness
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
      additional property: Loudness (dB)
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album: ねぇバーディア
album: nee-bardea
album: 圧倒的なスタイル (NEGiBAND ver.)
album: 矛盾、はじめました。
album: Mujun hajimemashita
album: ティー・フォー・スリー
album: Tea For Three
album: AI KAMASHITAINO
album: 愛、かましたいの
album: We are VR friends!
album: Negicco 2011～2017-BEST-2
album: Negicco 2011~2017-BEST-2
album: CALYPSOMUSUME NI HANATABAO
album: カリプソ娘に花束を
album: Kimi Wa Dream
album: MY COLOR
album: Go コースター！Go！Go！
album: Go Coaster! Go! Go!
album: I LOVE YOUR LOVE
album: Gozen0zino Sympathy
album: 午前0時のシンパシー
album: 僕らはともだち (2021ver.)
album: Bokura wa Tomodachi (2021ver.)
album: Perfect Sense
album: 私をネギーに連れてって (II)
album: Watashi wo Negiii ni Tsuretette (2)
album: What A Wonderful World
album: おにぎりハウスのうた
album: ONIGIRI HOUSE theme
track: プラチナ
track: Do-De-Da ~Trimondo Negimina~ (feat. Negicco)

プラチナ
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duration: PT4M17S
duration ms: 257800
explicit: false
by artist: Negicco
in album: 坂本真綾20周年記念トリビュートアルバム REQUEST
  type: MusicAlbum
  date published: 2015-04-22
popularity: 4
isrc code: JPVI01509990
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-06T22:14:24+00:00
additional property: CopyrightChainExplorerURL
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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/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01509990
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+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 0x6932381d4b1c659b3acd2f3cf4e98d915f7c50f046ce6aeb84708647ecd53f9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI01509990.
  date published: 2026-07-08T03:20:19Z
audio: プラチナ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.479
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.427
  additional property: Energy
    type: PropertyValue
    value: 0.911
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.03
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.356
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.491
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.875
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Do-De-Da ~Trimondo Negimina~ (feat. Negicco)
type: MusicRecording
duration: PT5M21S
duration ms: 321946
explicit: false
by artist: Orland
by artist: Negicco
in album: LUV CONNECTION E.P.
  type: MusicAlbum
  date published: 2015-10-03
popularity: 3
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb21af32d85f1108f0046e53cfaacd4f5bdd07150334b127ca88e00a69fd52. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCJPE1618754.
  date published: 2026-07-30T14:36:16Z
audio: Do-De-Da ~Trimondo Negimina~ (feat. Negicco)
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.521
  additional property: Energy
    type: PropertyValue
    value: 0.925
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.001
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.625
  additional property: Liveness
    type: PropertyValue
    value: 0.314
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.672
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.503
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: TCJPE1618754
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
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additional property: BitcoinTime
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPE1618754
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16+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

Valence (Positivity)
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value: 0.897

Loudness (dB)
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value: -4.099

Key Name
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Mode Name
type: PropertyValue
value: Major

サンシャイン日本海
type: MusicAlbum
date published: 2015-02-18

Melody Palette
type: MusicAlbum
date published: 2015-05-13
track: あなたとPop With You!
  type: MusicRecording
  duration: PT4M2S
  duration ms: 242626
  explicit: false
  by artist: Negicco
  in album: Melody Palette
    type: MusicAlbum
    date published: 2015-05-13
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871200403
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  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/JPE871200403
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T02:27:02Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd999c85d4e9a4c2075f3ca968a4ebf7c5c3d4a85b715c1f16b489bdf220eaed. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE871200403.
    date published: 2026-07-21T02:27:02Z
  audio: あなたとPop With You!
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: アイドルばかり聴かないで
  type: MusicRecording
  duration: PT3M29S
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  by artist: Negicco
  in album: Melody Palette
    type: MusicAlbum
    date published: 2015-05-13
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871300507
  additional property: CopyrightID
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE871300507
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd0547c29f95ef491183bad9115f20d91561fdf4ac343e0886af465b8b6098. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPE871300507.
    date published: 2026-07-16T05:55:09Z
  audio: アイドルばかり聴かないで
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Danceability
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ねぇバーディア
type: MusicAlbum
date published: 2015-08-11

ねぇバーディア
type: MusicAlbum
date published: 2015-08-11

nee-bardea
type: MusicAlbum
date published: 2015-08-11

圧倒的なスタイル (NEGiBAND ver.)
type: MusicAlbum
date published: 2015-12-26

圧倒的なスタイル (NEGiBAND ver.)
type: MusicAlbum
date published: 2015-12-26

矛盾、はじめました。
type: MusicAlbum
date published: 2016-03-29

矛盾、はじめました。
type: MusicAlbum
date published: 2016-03-29

Mujun hajimemashita
type: MusicAlbum
date published: 2016-03-29

ティー・フォー・スリー
type: MusicAlbum
date published: 2016-05-24

Tea For Three
type: MusicAlbum
date published: 2016-05-24

ティー・フォー・スリー
type: MusicAlbum
date published: 2016-05-24
track: ねぇバーディア
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    date published: 2016-05-24
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1657a27579edaee3bd8c0cb9f308ca1a413478585427b9babd7119d5991030c. 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/JPE871501169.
    date published: 2026-07-04T10:04:33Z
  audio: ねぇバーディア
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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track: 矛盾、はじめました。
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  explicit: false
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    type: MusicAlbum
    date published: 2016-05-24
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d272c262c152677cfade917d15ff2a4b930b9dbf2ba027dc167702d74b902f8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPE871601526.
    date published: 2026-07-18T02:58:58Z
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    additional property: Danceability
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    additional property: Energy
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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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    additional property: Loudness (dB)
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    additional property: Key Name
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AI KAMASHITAINO
type: MusicAlbum
date published: 2016-12-20

愛、かましたいの
type: MusicAlbum
date published: 2016-12-20

愛、かましたいの
type: MusicAlbum
date published: 2016-12-20

We are VR friends!
type: MusicAlbum
date published: 2017-02-03

We are VR friends!
type: MusicAlbum
date published: 2017-02-03

Negicco 2011～2017-BEST-2
type: MusicAlbum
date published: 2017-07-20
track: 愛は光
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  duration: PT5M52S
  duration ms: 352349
  explicit: false
  by artist: Negicco
  in album: Negicco 2011～2017-BEST-2
    type: MusicAlbum
    date published: 2017-07-20
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871702291
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b53e4739417a5d716ad152ec66d0c546b2affa3ae427203c69557f448877d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPE871702291.
    date published: 2026-07-04T11:19:20Z
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    additional property: Valence (Positivity)
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Negicco 2011~2017-BEST-2
type: MusicAlbum
date published: 2017-07-20

Negicco 2011～2017-BEST-2
type: MusicAlbum
date published: 2017-07-20

CALYPSOMUSUME NI HANATABAO
type: MusicAlbum
date published: 2018-02-06

カリプソ娘に花束を
type: MusicAlbum
date published: 2018-02-06

カリプソ娘に花束を
type: MusicAlbum
date published: 2018-02-06

Kimi Wa Dream
type: MusicAlbum
date published: 2018-06-12

MY COLOR
type: MusicAlbum
date published: 2018-07-03
track: 愛、かましたいの
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  duration ms: 220339
  explicit: false
  by artist: Negicco
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    type: MusicAlbum
    date published: 2018-07-03
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871602051
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d807d3de2054ec52b3ccb235f5d52f1969bf1f2afb836a14dc7b088cb20993. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:48Z), 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/JPE871602051.
    date published: 2026-07-21T02:03:48Z
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    additional property: Danceability
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    additional property: Valence (Positivity)
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MY COLOR
type: MusicAlbum
date published: 2018-07-03

MY COLOR
type: MusicAlbum
date published: 2018-07-10

MY COLOR
type: MusicAlbum
date published: 2018-07-10

Go コースター！Go！Go！
type: MusicAlbum
date published: 2018-11-30

Go Coaster! Go! Go!
type: MusicAlbum
date published: 2018-11-30

Go コースター！Go！Go！
type: MusicAlbum
date published: 2018-11-30

I LOVE YOUR LOVE
type: MusicAlbum
date published: 2019-09-24

I LOVE YOUR LOVE
type: MusicAlbum
date published: 2019-09-24
track: I LOVE YOUR LOVE
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  duration ms: 258864
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  by artist: Negicco
  in album: I LOVE YOUR LOVE
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    date published: 2019-09-24
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871903414
  additional property: CopyrightID
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  additional property: OTSBitcoinBlockVerifyURL
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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
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    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-18T19:27:02Z
  audio: I LOVE YOUR LOVE
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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I LOVE YOUR LOVE
type: MusicAlbum
date published: 2019-09-24

Gozen0zino Sympathy
type: MusicAlbum
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午前0時のシンパシー
type: MusicAlbum
date published: 2020-08-25

午前0時のシンパシー
type: MusicAlbum
date published: 2020-08-25

僕らはともだち (2021ver.)
type: MusicAlbum
date published: 2021-07-20

Bokura wa Tomodachi (2021ver.)
type: MusicAlbum
date published: 2021-07-20

僕らはともだち (2021ver.)
type: MusicAlbum
date published: 2021-07-20

Perfect Sense
type: MusicAlbum
date published: 2023-07-20

Perfect Sense
type: MusicAlbum
date published: 2023-07-20

私をネギーに連れてって (II)
type: MusicAlbum
date published: 2023-12-04

Watashi wo Negiii ni Tsuretette (2)
type: MusicAlbum
date published: 2023-12-04

What A Wonderful World
type: MusicAlbum
date published: 2024-08-14
track: I LOVE YOUR LOVE
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  explicit: false
  by artist: Negicco
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    date published: 2024-08-14
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
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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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb508b50039aca348d3c99fd8c47de4bb51b94a8a039fb92ab363ba511ada87. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:26Z), 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/JPE871903414.
    date published: 2026-07-15T15:52:26Z
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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track: 午前0時のシンパシー
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    date published: 2024-08-14
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE871903718
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T18:05:01Z
  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 0xfde53922397509d80df869b70ca096510179b91e7da5cec5417e3bf2f0103d1f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPE871903718.
    date published: 2026-07-18T18:05:01Z
  audio: 午前0時のシンパシー
    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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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: あなたとNegi With You!
  type: MusicRecording
  duration: PT4M48S
  duration ms: 288327
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  by artist: Negicco
  in album: What A Wonderful World
    type: MusicAlbum
    date published: 2024-08-14
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
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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: あなたとNegi With You!

OTSHash
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OTSBitcoinBlock
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value: 958817

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958817

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922404866

OTSTimestamp
type: PropertyValue
value: 2026-07-20T06:33:56Z

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 0xd181f0194fcd5990ac120b8434dc4bf2dc905bd0e2c7b4e02d1c4fe2c1755061. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:33:56Z), 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/JPZ922404866.
date published: 2026-07-20T06:33:56Z

あなたとNegi With You!
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
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additional property: Danceability
  type: PropertyValue
  value: 0.678
additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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What A Wonderful World
type: MusicAlbum
date published: 2024-08-14
track: I LOVE YOUR LOVE
  type: MusicRecording
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  duration ms: 259137
  explicit: false
  by artist: Negicco
  in album: What A Wonderful World
    type: MusicAlbum
    date published: 2024-08-14
  genre: city pop
  genre: j-pop
  genre: shibuya-kei
  isrc code: JPE871903414
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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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/958931
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE871903414
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb508b50039aca348d3c99fd8c47de4bb51b94a8a039fb92ab363ba511ada87. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPE871903414.
    date published: 2026-07-20T21:15:01Z
  audio: I LOVE YOUR LOVE
    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
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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おにぎりハウスのうた
type: MusicAlbum
date published: 2025-07-23

ONIGIRI HOUSE theme
type: MusicAlbum
date published: 2025-07-23

straw steps - feat. Negicco
type: MusicRecording
duration: PT2M2S
duration ms: 122947
explicit: false
by artist: LEE HWANGDAE
by artist: Negicco
in album: SANGO ALBUM
  type: MusicAlbum
  date published: 2024-10-02
genre: city-pop
genre: japanese-indie
isrc code: JPG102401559
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x0c7b5a11a17781960c590c0443c9d15ae05fd8123fb4d272bbfb43bafce54247
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG102401559
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b5a11a17781960c590c0443c9d15ae05fd8123fb4d272bbfb43bafce54247. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG102401559.
  date published: 2026-07-08T03:53:27Z
audio: straw steps - feat. Negicco
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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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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  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
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straw steps - feat. Negicco
type: MusicRecording
duration: PT2M2S
duration ms: 122947
explicit: false
by artist: LEE HWANGDAE
by artist: Negicco
in album: straw steps (feat. Negicco)
  type: MusicAlbum
  date published: 2024-09-11
genre: city-pop
genre: japanese-indie
isrc code: JPG102401559
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T10:18:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c7b5a11a17781960c590c0443c9d15ae05fd8123fb4d272bbfb43bafce54247
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG102401559
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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 0x0c7b5a11a17781960c590c0443c9d15ae05fd8123fb4d272bbfb43bafce54247. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG102401559.
  date published: 2026-07-08T03:53:27Z
audio: straw steps - feat. Negicco
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  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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