Tsubasa Sakiyama
type: MusicGroup
genre: vocaloid
popularity: 14
followers: 5372
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54f45528fa961db65c283f56664030f28e2b49ef0c10d01ddc9303d7f7abbd5f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953617
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953617
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c7d4543-2ccd-4350-b9aa-4395c748fc6d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c7d4543-2ccd-4350-b9aa-4395c748fc6d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1c7d4543-2ccd-4350-b9aa-4395c748fc6d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:00:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x54f45528fa961db65c283f56664030f28e2b49ef0c10d01ddc9303d7f7abbd5f","name":"Tsubasa Sakiyama","registered_at":"2026-06-14T07:24:01Z","symbol":"NIM0380399","token_address":"0xf87668127026173bb562361a02077bcc37307dba","type":"artist","uuid":"1c7d4543-2ccd-4350-b9aa-4395c748fc6d"}
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 0x54f45528fa961db65c283f56664030f28e2b49ef0c10d01ddc9303d7f7abbd5f. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c7d4543-2ccd-4350-b9aa-4395c748fc6d.json and https://artists.proofprofile.net/proofs/artist/1c7d4543-2ccd-4350-b9aa-4395c748fc6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:00:45Z
  text: {"copyright_id":"0x54f45528fa961db65c283f56664030f28e2b49ef0c10d01ddc9303d7f7abbd5f","name":"Tsubasa Sakiyama","registered_at":"2026-06-14T07:24:01Z","symbol":"NIM0380399","token_address":"0xf87668127026173bb562361a02077bcc37307dba","type":"artist","uuid":"1c7d4543-2ccd-4350-b9aa-4395c748fc6d"}
album: 月花夜
  type: MusicAlbum
  date published: 2017-11-01
album: 螺旋
  type: MusicAlbum
  date published: 2018-05-02
album: Crescent Moon
  type: MusicAlbum
  date published: 2018-09-12
album: UTOPIA
  type: MusicAlbum
  date published: 2018-12-19
  track: ダンシング☆サムライ
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190453
    explicit: false
    by artist: Tsubasa Sakiyama
    in album: UTOPIA
      type: MusicAlbum
      date published: 2018-12-19
    genre: vocaloid
    isrc code: JPB601803944
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T02:06:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x51c7c694722c4811344c25f7856a2d9c99cecff9f31562cf63dc97b7fa66f7e1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601803944
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x51c7c694722c4811344c25f7856a2d9c99cecff9f31562cf63dc97b7fa66f7e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPB601803944.
      date published: 2026-07-03T08:56:35Z
    audio: ダンシング☆サムライ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.935
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.939
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.333
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.934
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.258
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Salvia/太陽系デスコ (崎山つばさver.)
  type: MusicAlbum
  date published: 2019-08-07
  track: 太陽系デスコ - 崎山つばさver.
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201145
    explicit: false
    by artist: Tsubasa Sakiyama
    in album: Salvia/太陽系デスコ (崎山つばさver.)
      type: MusicAlbum
      date published: 2019-08-07
    genre: vocaloid
    isrc code: JPB601902543
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T14:26:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8d3c05d7eb60737a8169d2010ac9eeb52b35809865abc581ffbf880823c8cb4a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958568
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958568
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902543
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T15:23:47Z
    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 0x8d3c05d7eb60737a8169d2010ac9eeb52b35809865abc581ffbf880823c8cb4a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPB601902543.
      date published: 2026-07-18T15:23:47Z
    audio: 太陽系デスコ - 崎山つばさver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.052
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.484
      additional property: Energy
        type: PropertyValue
        value: 0.961
      additional property: Speechiness
        type: PropertyValue
        value: 0.104
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 桜時雨/忘れな歌
album: latte
album: 正偽
album: 崎山つばさ Billboard Live ～latte～
album: ( i + i )
album: petit fours
album: Flow＊er ～TSUBASA SAKIYAMA LIVE & TRIP MOVIE～ LIVE音源
album: TSUBASA SAKIYAMA 10th Anniversary LIVE 2025 SET LIST

Acousticness
type: PropertyValue
value: 0.001

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.7

Valence (Positivity)
type: PropertyValue
value: 0.638

Loudness (dB)
type: PropertyValue
value: -1.685

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major

桜時雨/忘れな歌
type: MusicAlbum
date published: 2020-01-29

latte
type: MusicAlbum
date published: 2021-04-21

正偽
type: MusicAlbum
date published: 2021-09-13

崎山つばさ Billboard Live ～latte～
type: MusicAlbum
date published: 2022-02-02

( i + i )
type: MusicAlbum
date published: 2022-02-02

petit fours
type: MusicAlbum
date published: 2022-04-27

Flow＊er ～TSUBASA SAKIYAMA LIVE & TRIP MOVIE～ LIVE音源
type: MusicAlbum
date published: 2025-07-28

TSUBASA SAKIYAMA 10th Anniversary LIVE 2025 SET LIST
type: MusicAlbum
date published: 2025-07-28