kei
type: MusicGroup
genre: j-r&b
popularity: 13
followers: 524
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x543467f37e43b2606d51e85ad0fd341e4f68131ab1e3c5a34641fdfccc7cecc2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1ccd3be-d4d0-4d4f-a43c-be7f5355ff25.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1ccd3be-d4d0-4d4f-a43c-be7f5355ff25.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d1ccd3be-d4d0-4d4f-a43c-be7f5355ff25
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
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 0x543467f37e43b2606d51e85ad0fd341e4f68131ab1e3c5a34641fdfccc7cecc2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1ccd3be-d4d0-4d4f-a43c-be7f5355ff25.json and https://artists.proofprofile.net/proofs/artist/d1ccd3be-d4d0-4d4f-a43c-be7f5355ff25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
album: CLUB
  type: MusicAlbum
  date published: 2023-06-07
album: CLUB
  type: MusicAlbum
  date published: 2023-06-07
album: Hanpa Mono
  type: MusicAlbum
  date published: 2023-07-05
album: 半端者
  type: MusicAlbum
  date published: 2023-07-05
album: 愚痴ループ
  type: MusicAlbum
  date published: 2023-08-02
album: Guchi Loop
  type: MusicAlbum
  date published: 2023-08-02
album: ない
  type: MusicAlbum
  date published: 2023-09-20
album: Nai
  type: MusicAlbum
  date published: 2023-09-20
album: 美徳
  type: MusicAlbum
  date published: 2023-10-18
album: Bitoku
  type: MusicAlbum
  date published: 2023-10-18
album: レトロ
  type: MusicAlbum
  date published: 2023-11-15
album: retro
  type: MusicAlbum
  date published: 2023-11-15
album: Tenshi ga Furu Machi de Aimasho
  type: MusicAlbum
  date published: 2023-12-06
album: 天使が降る街で逢いましょう
  type: MusicAlbum
  date published: 2023-12-06
album: Diremma and Monster
  type: MusicAlbum
  date published: 2024-01-31
album: ジレンマとモンスター
  type: MusicAlbum
  date published: 2024-01-31
album: 三日坊主の天才
  type: MusicAlbum
  date published: 2024-02-28
album: Mikkabouzu no Tensai
  type: MusicAlbum
  date published: 2024-02-28
album: 口笛吹けば恋
  type: MusicAlbum
  date published: 2024-03-27
album: Kuchibue Fukeba Koi
  type: MusicAlbum
  date published: 2024-03-27
album: 心地いいからいいんだよ
  type: MusicAlbum
  date published: 2024-05-29
album: Kokochiii Kara Iindayo
  type: MusicAlbum
  date published: 2024-05-29
album: Azayaka na Kokai
  type: MusicAlbum
  date published: 2024-08-07
album: 鮮やかな後悔
  type: MusicAlbum
  date published: 2024-08-07
album: Girigiri Tamotteru
  type: MusicAlbum
  date published: 2024-10-16
album: ギリギリたもってる、
  type: MusicAlbum
  date published: 2024-10-16
album: Shimai
  type: MusicAlbum
  date published: 2024-12-18
album: 終い
  type: MusicAlbum
  date published: 2024-12-18
album: それでHappy
  type: MusicAlbum
  date published: 2025-02-26
  track: それでHappy
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205439
    explicit: false
    by artist: kei
    in album: それでHappy
      type: MusicAlbum
      date published: 2025-02-26
    genre: j-r&b
    isrc code: JPVI02500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x09da260e8fef4856696749206dc3ae2a865a8d257ca9c705cf6828e858e53cf0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0x09da260e8fef4856696749206dc3ae2a865a8d257ca9c705cf6828e858e53cf0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI02500001.
      date published: 2026-07-19T07:14:39Z
    audio: それでHappy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.987
      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: 0.68
      additional property: Energy
        type: PropertyValue
        value: 0.665
      additional property: Speechiness
        type: PropertyValue
        value: 0.066
      additional property: Acousticness
        type: PropertyValue
        value: 0.07
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.047
      additional property: Liveness
        type: PropertyValue
        value: 0.123
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.725
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.183
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
album: Sorede Happy
album: 降らせ！
album: Furase!
album: Tasogarekoso
album: 黄昏こそ
album: 甘い愛を
album: Amai Ai o

Mode Name
type: PropertyValue
value: Minor

Sorede Happy
type: MusicAlbum
date published: 2025-02-26
track: Sorede Happy
  type: MusicRecording
  duration: PT3M25S
  duration ms: 205439
  explicit: false
  by artist: kei
  in album: Sorede Happy
    type: MusicAlbum
    date published: 2025-02-26
  genre: j-r&b
  isrc code: JPVI02500001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T22:53:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x09da260e8fef4856696749206dc3ae2a865a8d257ca9c705cf6828e858e53cf0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957770
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957770
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02500001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T23:17:00Z
  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 0x09da260e8fef4856696749206dc3ae2a865a8d257ca9c705cf6828e858e53cf0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPVI02500001.
    date published: 2026-07-12T23:17:00Z
  audio: Sorede Happy
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.987
    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: 0.68
    additional property: Energy
      type: PropertyValue
      value: 0.665
    additional property: Speechiness
      type: PropertyValue
      value: 0.066
    additional property: Acousticness
      type: PropertyValue
      value: 0.07
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.047
    additional property: Liveness
      type: PropertyValue
      value: 0.123
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.725
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.183
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor

降らせ！
type: MusicAlbum
date published: 2025-06-04

Furase!
type: MusicAlbum
date published: 2025-06-04

Tasogarekoso
type: MusicAlbum
date published: 2025-07-23

黄昏こそ
type: MusicAlbum
date published: 2025-07-23

甘い愛を
type: MusicAlbum
date published: 2025-09-17

Amai Ai o
type: MusicAlbum
date published: 2025-09-17