KEI
type: MusicGroup
genre: vocaloid
description: Kei or KEI may refer to: People Kei (given name) Kei, Cantonese for Ji (姫) Kei, Cantonese for Qi (奇, 祁, 亓) Shō Kei (1700–1752), king of the Ryūkyū Kingdom Kei (singer) (born 1995), stage name of
popularity: 17
followers: 1337
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3eeb1656dd630f87bd31ace3c447364bae8f47fc3432803a48eec038b1db4527
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea5eb6bb-5ad8-4ea0-88cc-b6ab7dcea7c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea5eb6bb-5ad8-4ea0-88cc-b6ab7dcea7c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ea5eb6bb-5ad8-4ea0-88cc-b6ab7dcea7c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
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 0x3eeb1656dd630f87bd31ace3c447364bae8f47fc3432803a48eec038b1db4527. 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/ea5eb6bb-5ad8-4ea0-88cc-b6ab7dcea7c7.json and https://artists.proofprofile.net/proofs/artist/ea5eb6bb-5ad8-4ea0-88cc-b6ab7dcea7c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
album: dialogue
  type: MusicAlbum
  date published: 2013
album: dialogue
  type: MusicAlbum
  date published: 2013-02-20
  track: 走れ
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207773
    explicit: false
    by artist: KEI
    in album: dialogue
      type: MusicAlbum
      date published: 2013-02-20
    genre: vocaloid
    isrc code: JPPI01350250
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd0de8789d34dcf28fd65df90472682adfc43eaad439f6a6875a375bbe0cc2fb8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPI01350250
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0xd0de8789d34dcf28fd65df90472682adfc43eaad439f6a6875a375bbe0cc2fb8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPPI01350250.
      date published: 2026-07-18T04:13:26Z
    audio: 走れ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.015
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.487
      additional property: Energy
        type: PropertyValue
        value: 0.915
      additional property: Speechiness
        type: PropertyValue
        value: 0.069
      additional property: Acousticness
        type: PropertyValue
        value: 0.028
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.25
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.804
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.872
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Hello,Woker
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233333
    explicit: false
    by artist: KEI
    in album: dialogue
      type: MusicAlbum
      date published: 2013-02-20
    genre: vocaloid
    isrc code: JPPI01350290
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T09:51:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x762c69b06d481bb6cf6f750398734393f7bda5998e45d2fef1253d976702c702
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958397
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958397
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPI01350290
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T10:29:45Z
    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 0x762c69b06d481bb6cf6f750398734393f7bda5998e45d2fef1253d976702c702. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPPI01350290.
      date published: 2026-07-17T10:29:45Z
    audio: Hello,Woker
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.965
      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: 0.534
      additional property: Energy
        type: PropertyValue
        value: 0.839
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.32
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.186
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.622
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Believe
album: Instinct
album: Guitar songs
album: Guitar songs 02
album: すべてを優しさにかえて
album: Guitar songs 03
album: story
album: Guitar songs 04
album: DAYBREAK
album: Guitar songs 05
album: BLESS
album: 雪解けのメロディ
album: Departure
album: Crimson Clash
album: Amaterasu's Guidance
album: Snow Dance
album: Snowstorm Night
album: Snowflake Symphony
album: Deep red lipstick
album: Abyssal Pressure
album: End of Winter
album: Digital Revolt
album: The Gaze of the Sun
album: Midnight Snowfall in Empty Parks
album: Arctic Drop
album: Dear You
album: Frozen Earth Ascension
album: Aurora Drive
album: 春の訪れ
album: ラーメンパラダイス
album: shooting star
album: Fancy You
album: Graduation
album: Spring Light
album: Spring Breeze
album: rhapsody
album: ラーメンLove!
album: Born Free
album: Battle Cry of the Ancient Gates
album: In the Storm
album: Journeyman

Loudness (dB)
type: PropertyValue
value: -4.482

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

dialogue
type: MusicAlbum
date published: 2013-02-20

dialogue
type: MusicAlbum
date published: 2013-02-20
track: 走れ
  type: MusicRecording
  duration: PT3M27S
  duration ms: 207773
  explicit: false
  by artist: KEI
  in album: dialogue
    type: MusicAlbum
    date published: 2013-02-20
  genre: vocaloid
  isrc code: JPPI01350250
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T02:23:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd0de8789d34dcf28fd65df90472682adfc43eaad439f6a6875a375bbe0cc2fb8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958228
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958228
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPI01350250
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T05:25:24Z
  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 0xd0de8789d34dcf28fd65df90472682adfc43eaad439f6a6875a375bbe0cc2fb8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:24Z), 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/JPPI01350250.
    date published: 2026-07-16T05:25:24Z
  audio: 走れ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.015
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.487
    additional property: Energy
      type: PropertyValue
      value: 0.915
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0.028
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.25
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.804
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.872
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Believe
type: MusicAlbum
date published: 2019-11-06

Instinct
type: MusicAlbum
date published: 2020-05-02

Guitar songs
type: MusicAlbum
date published: 2021-10-28

Guitar songs 02
type: MusicAlbum
date published: 2021-12-14

すべてを優しさにかえて
type: MusicAlbum
date published: 2022-11-28

Guitar songs 03
type: MusicAlbum
date published: 2022-12-15

story
type: MusicAlbum
date published: 2022-12-26

Guitar songs 04
type: MusicAlbum
date published: 2023-12-04

DAYBREAK
type: MusicAlbum
date published: 2024-11-27

Guitar songs 05
type: MusicAlbum
date published: 2024-12-02

BLESS
type: MusicAlbum
date published: 2024-12-26

雪解けのメロディ
type: MusicAlbum
date published: 2025-02-04

Departure
type: MusicAlbum
date published: 2025-02-05

Crimson Clash
type: MusicAlbum
date published: 2025-02-07

Amaterasu's Guidance
type: MusicAlbum
date published: 2025-02-07

Snow Dance
type: MusicAlbum
date published: 2025-02-07

Snowstorm Night
type: MusicAlbum
date published: 2025-02-07

Snowflake Symphony
type: MusicAlbum
date published: 2025-02-10

Deep red lipstick
type: MusicAlbum
date published: 2025-02-10

Abyssal Pressure
type: MusicAlbum
date published: 2025-02-12

End of Winter
type: MusicAlbum
date published: 2025-02-12

Digital Revolt
type: MusicAlbum
date published: 2025-02-12

The Gaze of the Sun
type: MusicAlbum
date published: 2025-02-12

Midnight Snowfall in Empty Parks
type: MusicAlbum
date published: 2025-02-13

Arctic Drop
type: MusicAlbum
date published: 2025-02-13

Dear You
type: MusicAlbum
date published: 2025-02-13

Frozen Earth Ascension
type: MusicAlbum
date published: 2025-02-13

Aurora Drive
type: MusicAlbum
date published: 2025-02-13

春の訪れ
type: MusicAlbum
date published: 2025-02-14

ラーメンパラダイス
type: MusicAlbum
date published: 2025-02-14

shooting star
type: MusicAlbum
date published: 2025-02-18

Fancy You
type: MusicAlbum
date published: 2025-02-19

Graduation
type: MusicAlbum
date published: 2025-02-19

Spring Light
type: MusicAlbum
date published: 2025-02-19

Spring Breeze
type: MusicAlbum
date published: 2025-02-20

rhapsody
type: MusicAlbum
date published: 2025-02-26

ラーメンLove!
type: MusicAlbum
date published: 2025-02-28

Born Free
type: MusicAlbum
date published: 2025-03-04

Battle Cry of the Ancient Gates
type: MusicAlbum
date published: 2025-03-05

In the Storm
type: MusicAlbum
date published: 2025-03-10

Journeyman
type: MusicAlbum
date published: 2025-03-17