STEAKA
type: MusicGroup
genre: vocaloid
popularity: 28
followers: 9653
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9d8bd3499999e2e6e63cff3b24f01d7c36ca212765d413415a6046bb8eed85d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f584fba8-11fb-4163-aa46-ac79dcff7f93.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f584fba8-11fb-4163-aa46-ac79dcff7f93.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f584fba8-11fb-4163-aa46-ac79dcff7f93
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8bd3499999e2e6e63cff3b24f01d7c36ca212765d413415a6046bb8eed85d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f584fba8-11fb-4163-aa46-ac79dcff7f93.json and https://artists.proofprofile.net/proofs/artist/f584fba8-11fb-4163-aa46-ac79dcff7f93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: 六角形のカフカ
  type: MusicAlbum
  date published: 2022-06-06
  track: 六角形のカフカ (feat. 可不)
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188800
    explicit: false
    by artist: STEAKA
    in album: 六角形のカフカ
      type: MusicAlbum
      date published: 2022-06-06
    genre: vocaloid
    isrc code: JP92Q2200254
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T03:12:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x650c509fccabda7b5e2b8228c28474cd32310f5366712af8a19a468074c39966
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958357
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958357
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92Q2200254
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T03:33:42Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c509fccabda7b5e2b8228c28474cd32310f5366712af8a19a468074c39966. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JP92Q2200254.
      date published: 2026-07-17T03:33:42Z
    audio: 六角形のカフカ (feat. 可不)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.018
      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
        value: 0.474
      additional property: Energy
        type: PropertyValue
        value: 0.998
      additional property: Speechiness
        type: PropertyValue
        value: 0.223
      additional property: Acousticness
        type: PropertyValue
        value: 0.053
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.05
      additional property: Liveness
        type: PropertyValue
        value: 0.229
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.163
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.989
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 夜踊る雫
  type: MusicAlbum
  date published: 2022-06-07
  track: 夜踊る雫 (feat. 初音ミク)
    type: MusicRecording
    duration: PT3M52S
    duration ms: 232500
    explicit: false
    by artist: STEAKA
    in album: 夜踊る雫
      type: MusicAlbum
      date published: 2022-06-07
    genre: vocaloid
    isrc code: JP92Q2200255
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T15:40:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa8250e572982d3fb91c5ee3a54148e1d2aa6b0ab8a0e43b07aa5483a43eaf2e1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957874
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957874
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92Q2200255
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T15:43:57Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8250e572982d3fb91c5ee3a54148e1d2aa6b0ab8a0e43b07aa5483a43eaf2e1. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JP92Q2200255.
      date published: 2026-07-13T15:43:57Z
    audio: 夜踊る雫 (feat. 初音ミク)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.059
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.606
      additional property: Energy
        type: PropertyValue
        value: 0.973
      additional property: Speechiness
        type: PropertyValue
        value: 0.149
      additional property: Acousticness
        type: PropertyValue
        value: 0.024
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.01
      additional property: Liveness
        type: PropertyValue
        value: 0.36
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.351
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: ツイッターランド
album: 合法覚醒剤
album: ドーピングダンス
album: スコーピオンガールの貴重な捕食シーン
album: コンペイトウさん過激派
album: パキパキ天使のハードラック
album: メディカドール
album: SAN値直葬
album: ヲチラレ
album: ぐちゃぐちゃぬるぽ
track: コンペイトウさん過激派

Loudness (dB)
type: PropertyValue
value: -4.029

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

ツイッターランド
type: MusicAlbum
date published: 2022-06-08

ツイッターランド
type: MusicAlbum
date published: 2022-06-09
track: ツイッターランド (feat. 初音ミク)
  type: MusicRecording
  duration: PT2M18S
  duration ms: 138591
  explicit: false
  by artist: STEAKA
  in album: ツイッターランド
    type: MusicAlbum
    date published: 2022-06-09
  genre: vocaloid
  isrc code: JP92Q2200257
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T13:11:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8dbaabca1b799495c4aa5ca18fcb7491c5671428c72f40147377982258da7316
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958157
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958157
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92Q2200257
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T13:14:32Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbaabca1b799495c4aa5ca18fcb7491c5671428c72f40147377982258da7316. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JP92Q2200257.
    date published: 2026-07-15T13:14:32Z
  audio: ツイッターランド (feat. 初音ミク)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 141.957
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.648
    additional property: Energy
      type: PropertyValue
      value: 0.949
    additional property: Speechiness
      type: PropertyValue
      value: 0.146
    additional property: Acousticness
      type: PropertyValue
      value: 0.038
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.69
    additional property: Liveness
      type: PropertyValue
      value: 0.077
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.588
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.118
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor

合法覚醒剤
type: MusicAlbum
date published: 2022-06-10

ドーピングダンス
type: MusicAlbum
date published: 2022-08-10

スコーピオンガールの貴重な捕食シーン
type: MusicAlbum
date published: 2022-10-21

コンペイトウさん過激派
type: MusicAlbum
date published: 2023-02-14

コンペイトウさん過激派
type: MusicAlbum
date published: 2023-02-14

パキパキ天使のハードラック
type: MusicAlbum
date published: 2023-09-01

メディカドール
type: MusicAlbum
date published: 2024-03-07

SAN値直葬
type: MusicAlbum
date published: 2024-12-21

ヲチラレ
type: MusicAlbum
date published: 2025-07-26

ぐちゃぐちゃぬるぽ
type: MusicAlbum
date published: 2025-08-23

コンペイトウさん過激派
type: MusicRecording
duration: PT2M3S
duration ms: 123000
explicit: false
by artist: STEAKA
by artist: 夢ノ結唱 POPY
in album: Infructescence
  type: MusicAlbum
  date published: 2023-07-12
isrc code: JPR562300000
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T12:31:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab68e781d99d671a8c1c81b8a334737de148eb7c5d6af83d66fdd2521e1d80db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960106
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960106
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPR562300000
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T12:41:21Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab68e781d99d671a8c1c81b8a334737de148eb7c5d6af83d66fdd2521e1d80db. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPR562300000.
  date published: 2026-07-29T12:41:21Z
audio: コンペイトウさん過激派
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 172.456
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.576
  additional property: Energy
    type: PropertyValue
    value: 0.922
  additional property: Speechiness
    type: PropertyValue
    value: 0.111
  additional property: Acousticness
    type: PropertyValue
    value: 0.089
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.938
  additional property: Liveness
    type: PropertyValue
    value: 0.3
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.963
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.104
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major