西憂花
type: MusicGroup
genre: vocaloid
popularity: 15
followers: 990
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x243045cb5e3ca102c703a5a1e42ec219e49e1f77c9de2aa68d4403d9fd88795b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f182b9e4-a3a9-472f-a412-be53f5d2576c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f182b9e4-a3a9-472f-a412-be53f5d2576c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f182b9e4-a3a9-472f-a412-be53f5d2576c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x243045cb5e3ca102c703a5a1e42ec219e49e1f77c9de2aa68d4403d9fd88795b","name":"西憂花","registered_at":"2026-06-15T05:51:49Z","symbol":"NIM0702012","token_address":"0x8b841a99382c7aa4d334e0156cbc64a15b1ec415","type":"artist","uuid":"f182b9e4-a3a9-472f-a412-be53f5d2576c"}
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 0x243045cb5e3ca102c703a5a1e42ec219e49e1f77c9de2aa68d4403d9fd88795b. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f182b9e4-a3a9-472f-a412-be53f5d2576c.json and https://artists.proofprofile.net/proofs/artist/f182b9e4-a3a9-472f-a412-be53f5d2576c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x243045cb5e3ca102c703a5a1e42ec219e49e1f77c9de2aa68d4403d9fd88795b","name":"西憂花","registered_at":"2026-06-15T05:51:49Z","symbol":"NIM0702012","token_address":"0x8b841a99382c7aa4d334e0156cbc64a15b1ec415","type":"artist","uuid":"f182b9e4-a3a9-472f-a412-be53f5d2576c"}
album: ルラレル
  type: MusicAlbum
  date published: 2021-10-05
album: 憂発的メラトニック
  type: MusicAlbum
  date published: 2021-11-13
album: 時ぐすり
  type: MusicAlbum
  date published: 2022-04-11
album: 分水 (self cover)
  type: MusicAlbum
  date published: 2022-07-02
album: KILIG
  type: MusicAlbum
  date published: 2022-08-27
album: Milestone
  type: MusicAlbum
  date published: 2022-11-12
album: 深海ディスタンス (self cover)
  type: MusicAlbum
  date published: 2022-12-08
  track: 深海ディスタンス - self cover
    type: MusicRecording
    duration: PT2M36S
    duration ms: 156413
    explicit: false
    by artist: 西憂花
    in album: 深海ディスタンス (self cover)
      type: MusicAlbum
      date published: 2022-12-08
    genre: vocaloid
    isrc code: TCJPT2299157
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:12:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6abd3e36e3d4ed039e571d994d12631e024a899541d1a9fd6c203c7691370d34
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2299157
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0x6abd3e36e3d4ed039e571d994d12631e024a899541d1a9fd6c203c7691370d34. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPT2299157.
      date published: 2026-07-05T10:59:37Z
    audio: 深海ディスタンス - self cover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.983
      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: 0.762
      additional property: Energy
        type: PropertyValue
        value: 0.667
      additional property: Speechiness
        type: PropertyValue
        value: 0.11
      additional property: Acousticness
        type: PropertyValue
        value: 0.291
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.017
      additional property: Liveness
        type: PropertyValue
        value: 0.059
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.962
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.7
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: シンデレラ
  type: MusicAlbum
  date published: 2023-02-23
album: マーガレット (feat. 可不)
  type: MusicAlbum
  date published: 2023-03-29
album: マーガレット (self cover)
  type: MusicAlbum
  date published: 2023-04-22
album: 夏の日
  type: MusicAlbum
  date published: 2023-08-04
album: 夏の日 (feat. 可不)
  type: MusicAlbum
  date published: 2023-08-20
album: Addicted to life
  type: MusicAlbum
  date published: 2023-10-07
album: ノスタルジア
  type: MusicAlbum
  date published: 2023-11-11
  track: 深海ディスタンス - self cover
    type: MusicRecording
    duration: PT2M36S
    duration ms: 156000
    explicit: false
    by artist: 西憂花
    in album: ノスタルジア
      type: MusicAlbum
      date published: 2023-11-11
    genre: vocaloid
    isrc code: TCJPY2304221
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:23:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x06443b1cdde891db218e4c46188fe9106a164a3cf9be1dc2bffd1fce56f7fb00
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958832
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958832
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPY2304221
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:27:12Z
    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
    audio: 深海ディスタンス - self cover
album: Addicted to life Ⅱ
album: RERAISE
album: ハコノナカ (feat. 可不)
album: ディナー
album: 西憂花 1st ONE-MAN LIVE 2024『RERAISE』
album: 暁月と絶望
album: 暁月と絶望 (feat. 初音ミク)
album: ever scream
album: merry steely
album: ミスリルドロップ (self cover)

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06443b1cdde891db218e4c46188fe9106a164a3cf9be1dc2bffd1fce56f7fb00. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPY2304221.
date published: 2026-07-20T08:27:12Z

深海ディスタンス - self cover
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 144.989
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: 0.762
additional property: Energy
  type: PropertyValue
  value: 0.67
additional property: Speechiness
  type: PropertyValue
  value: 0.125
additional property: Acousticness
  type: PropertyValue
  value: 0.305
additional property: Instrumentalness
  type: PropertyValue
  value: 0.005
additional property: Liveness
  type: PropertyValue
  value: 0.063
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.953
additional property: Loudness (dB)
  type: PropertyValue
  value: -3.849
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Addicted to life Ⅱ
type: MusicAlbum
date published: 2023-12-28

RERAISE
type: MusicAlbum
date published: 2024-03-01

ハコノナカ (feat. 可不)
type: MusicAlbum
date published: 2024-06-08

ディナー
type: MusicAlbum
date published: 2024-06-10

西憂花 1st ONE-MAN LIVE 2024『RERAISE』
type: MusicAlbum
date published: 2024-09-02

暁月と絶望
type: MusicAlbum
date published: 2024-09-20

暁月と絶望 (feat. 初音ミク)
type: MusicAlbum
date published: 2024-09-22

ever scream
type: MusicAlbum
date published: 2024-10-20

merry steely
type: MusicAlbum
date published: 2025-02-06
track: ブラウニー
  type: MusicRecording
  duration: PT2M25S
  duration ms: 145543
  explicit: false
  by artist: 西憂花
  in album: merry steely
    type: MusicAlbum
    date published: 2025-02-06
  genre: vocaloid
  isrc code: TCJPD2578150
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x13c0dd577fdc84e2a2a800c78be99e9f67d4e94e7111cc08794dd10a277aa8e2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958876
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958876
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2578150
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T12:15:48Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c0dd577fdc84e2a2a800c78be99e9f67d4e94e7111cc08794dd10a277aa8e2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCJPD2578150.
    date published: 2026-07-20T12:15:48Z
  audio: ブラウニー
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 162.119
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.438
    additional property: Energy
      type: PropertyValue
      value: 0.926
    additional property: Speechiness
      type: PropertyValue
      value: 0.425
    additional property: Acousticness
      type: PropertyValue
      value: 0.316
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.154
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.7
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.734
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

ミスリルドロップ (self cover)
type: MusicAlbum
date published: 2025-06-07
track: ミスリルドロップ - self cover
  type: MusicRecording
  duration: PT2M29S
  duration ms: 149988
  explicit: false
  by artist: 西憂花
  in album: ミスリルドロップ (self cover)
    type: MusicAlbum
    date published: 2025-06-07
  genre: vocaloid
  isrc code: TCJPI2518387
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T07:27:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x91a5999d6036f133b8e9cab54dd1eb39a1ade8f79c8d7addedfd29c0a806445a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958383
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958383
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPI2518387
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T08:20:01Z
  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 0x91a5999d6036f133b8e9cab54dd1eb39a1ade8f79c8d7addedfd29c0a806445a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPI2518387.
    date published: 2026-07-17T08:20:01Z
  audio: ミスリルドロップ - self cover
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 140.012
    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: 0.688
    additional property: Energy
      type: PropertyValue
      value: 0.794
    additional property: Speechiness
      type: PropertyValue
      value: 0.073
    additional property: Acousticness
      type: PropertyValue
      value: 0.53
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.082
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.94
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.924
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major