Hikaru Shirosu
type: MusicGroup
genre: japanese classical
popularity: 58
followers: 41090
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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album: Inochi
  type: MusicAlbum
  date published: 2012-04-26
album: Paint Your Heart
  type: MusicAlbum
  date published: 2013-01-27
album: Happy Birthday
  type: MusicAlbum
  date published: 2013-06-06
album: Blue Stone of Atlas (Piano Solo Version)
  type: MusicAlbum
  date published: 2019-07-02
album: Tea Picking (Piano Solo Version)
  type: MusicAlbum
  date published: 2019-07-12
album: The Name of Life (Piano Solo Version)
  type: MusicAlbum
  date published: 2019-07-22
album: Reboot in Shinjuku (Tokyo Lo-Fi HipHop Mix)
  type: MusicAlbum
  date published: 2019-08-02
album: Going Home at 5 A.M. (Tokyo Lo-Fi HipHop Mix)
  type: MusicAlbum
  date published: 2019-08-12
album: ・・・・for Piano
  type: MusicAlbum
  date published: 2019-09-02
album: Happy Birthday (Piano Solo Version)
  type: MusicAlbum
  date published: 2019-10-09
album: Zanarkand (FINAL FANTASY X Piano Collections Version)
  type: MusicAlbum
  date published: 2019-11-26
album: Piano in Nature
  type: MusicAlbum
  date published: 2019-12-28
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      date published: 2019-12-28
    genre: japanese classical
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      date published: 2026-07-03T10:47:44Z
    audio: Happy Birthday in Nature
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  track: Blue Stone of Atlas in Nature
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      date published: 2019-12-28
    genre: japanese classical
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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 0x5f30694ac0b416b0db0992a44d69cc0625d3b1c569301546bca7e761d195a118. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL1946828.
      date published: 2026-07-02T16:51:38Z
    audio: Blue Stone of Atlas in Nature
album: Stories of a Figure Skater - Day Off
album: Fantasie No. 2, Op. 5 "Time Warp"
album: Waltz No. 1, Op. 6 "Collapse"
album: Etude No. 1, Op. 8 "Snow Mountain in Edo"
album: Prelude No. 2, Op. 7 "Saxophone Quartet"
album: Op. 1
album: Fantasie No. 2, "Time Warp" (Tokyo Lo-Fi Mix)
album: Tea Picking (10th Anniversary)
album: Lukewarm Tea (Tokyo Lo-Fi Mix)
album: Late Sunday Morning (Tokyo Nap Mix)
album: Op. 1: Multiverse
album: Impromptu No. 2, On the Cliff (Upright Piano)
album: Prelude No. 3, Final Stars
album: Waltz No. 2, Robot
album: Sonatine No. 1: Pierrot
album: Ballad No. 1, Lightning Bolt
album: Hanamizuki (feat. Yo Hitoto) [Cover]
album: Intermezzo No. 2, Tart Stars (Ambient)
album: Op. 2
album: Debussy & Satie (Lo-Fi E-Piano)
album: Portrait No. 1, Ophelia
album: Portrait No. 2, Astral Novelist
album: Waltz No. 3, Mouse in Paris
album: Portrait No. 3, Retired Hero with the Shield
album: Portrait No. 4, Shining Lifeless Light

Blue Stone of Atlas in Nature
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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: 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)
  type: PropertyValue
  value: 0.105
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.346
additional property: Key Name
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  value: Bb
additional property: Mode Name
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Stories of a Figure Skater - Day Off
type: MusicAlbum
date published: 2020-05-13

Fantasie No. 2, Op. 5 "Time Warp"
type: MusicAlbum
date published: 2020-06-13

Waltz No. 1, Op. 6 "Collapse"
type: MusicAlbum
date published: 2020-07-03

Etude No. 1, Op. 8 "Snow Mountain in Edo"
type: MusicAlbum
date published: 2020-07-17

Prelude No. 2, Op. 7 "Saxophone Quartet"
type: MusicAlbum
date published: 2020-07-27

Op. 1
type: MusicAlbum
date published: 2021-02-24
track: Prelude No. 2 in B-Flat Minor, Saxophone Quartet
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  by artist: Hikaru Shirosu
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  genre: japanese classical
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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 0xe9a58f2cc63b1f9f7b2c979e82ce5241b0398550b2825c68dd623305f10edacf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5FN2135691.
    date published: 2026-07-05T10:01:46Z
  audio: Prelude No. 2 in B-Flat Minor, Saxophone Quartet
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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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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track: Intermezzo No. 1 in D Major, Late Sunday Morning
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  in album: Op. 1
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    date published: 2021-02-24
  genre: japanese classical
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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
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    date published: 2026-07-19T03:36:41Z
  audio: Intermezzo No. 1 in D Major, Late Sunday Morning
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track: Etude No. 1 in E-Flat Major, Snow Mountain in Edo
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  genre: japanese classical
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  additional property: OTSVerificationAPI
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  subject of: OpenTimestamps Proof of Existence
  audio: Etude No. 1 in E-Flat Major, Snow Mountain in Edo

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2135772

OTSTimestamp
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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 0x50bf8c48bd8059ec0bf823c44de52506d7b42f8fc52038267baceb94b69d20ed. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ5FN2135772.
date published: 2026-07-13T18:21:04Z

Etude No. 1 in E-Flat Major, Snow Mountain in Edo
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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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Fantasie No. 2, "Time Warp" (Tokyo Lo-Fi Mix)
type: MusicAlbum
date published: 2021-04-06

Tea Picking (10th Anniversary)
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Lukewarm Tea (Tokyo Lo-Fi Mix)
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Late Sunday Morning (Tokyo Nap Mix)
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date published: 2021-09-27
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  audio: Late Sunday Morning - Tokyo Nap Mix
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Op. 1: Multiverse
type: MusicAlbum
date published: 2022-06-01

Impromptu No. 2, On the Cliff (Upright Piano)
type: MusicAlbum
date published: 2022-09-19

Prelude No. 3, Final Stars
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date published: 2022-10-24

Waltz No. 2, Robot
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date published: 2023-01-26

Sonatine No. 1: Pierrot
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date published: 2023-06-02

Ballad No. 1, Lightning Bolt
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date published: 2023-06-15

Hanamizuki (feat. Yo Hitoto) [Cover]
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date published: 2023-09-04

Intermezzo No. 2, Tart Stars (Ambient)
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date published: 2023-09-21

Op. 2
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track: Intermezzo No. 2, Tart Stars
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  subject of: OpenTimestamps Proof of Existence
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track: Sonatine No. 1, Pierrot - in E Minor
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  audio: Sonatine No. 1, Pierrot - in E Minor
track: Impromptu No. 2, On the Cliff - in G-Flat Major

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-03T01:01:38Z

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Debussy & Satie (Lo-Fi E-Piano)
type: MusicAlbum
date published: 2024-08-01

Portrait No. 1, Ophelia
type: MusicAlbum
date published: 2024-09-11

Portrait No. 2, Astral Novelist
type: MusicAlbum
date published: 2024-11-21

Waltz No. 3, Mouse in Paris
type: MusicAlbum
date published: 2025-04-21

Portrait No. 3, Retired Hero with the Shield
type: MusicAlbum
date published: 2025-06-09

Portrait No. 4, Shining Lifeless Light
type: MusicAlbum
date published: 2025-11-03