Ujita Mai
type: MusicGroup
genre: j-pop
popularity: 32
followers: 11650
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdca59e479fade02bf366f2109c7aa8d5c65319e0af3ec50e603e4e9ac6429b93
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/53fab50c-7928-4e8a-a224-3d64761028a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53fab50c-7928-4e8a-a224-3d64761028a9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/53fab50c-7928-4e8a-a224-3d64761028a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdca59e479fade02bf366f2109c7aa8d5c65319e0af3ec50e603e4e9ac6429b93","name":"Ujita Mai","registered_at":"2026-06-11T20:57:37Z","symbol":"NIM0109521","token_address":"0xf105af9d32c6ae935abe5eea7099b3a8c71dffc5","type":"artist","uuid":"53fab50c-7928-4e8a-a224-3d64761028a9"}
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 0xdca59e479fade02bf366f2109c7aa8d5c65319e0af3ec50e603e4e9ac6429b93. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53fab50c-7928-4e8a-a224-3d64761028a9.json and https://artists.proofprofile.net/proofs/artist/53fab50c-7928-4e8a-a224-3d64761028a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xdca59e479fade02bf366f2109c7aa8d5c65319e0af3ec50e603e4e9ac6429b93","name":"Ujita Mai","registered_at":"2026-06-11T20:57:37Z","symbol":"NIM0109521","token_address":"0xf105af9d32c6ae935abe5eea7099b3a8c71dffc5","type":"artist","uuid":"53fab50c-7928-4e8a-a224-3d64761028a9"}
album: Shimauma Ni Naritaina
  type: MusicAlbum
  date published: 2019-10-28
album: Hitoriuta ~September How YOU doin'?~
  type: MusicAlbum
  date published: 2020-02-28
album: Mask Code
  type: MusicAlbum
  date published: 2020-04-27
  track: Mask Code
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128307
    explicit: false
    by artist: Ujita Mai
    in album: Mask Code
      type: MusicAlbum
      date published: 2020-04-27
    genre: j-pop
    isrc code: TCJPL2002463
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T21:05:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x39fd5ce447fe3a60df388ce6d85200353df86e02e637ab31cefef4b278aa6a75
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958462
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958462
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPL2002463
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T23:17:53Z
    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 0x39fd5ce447fe3a60df388ce6d85200353df86e02e637ab31cefef4b278aa6a75. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCJPL2002463.
      date published: 2026-07-17T23:17:53Z
    audio: Mask Code
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.026
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.856
      additional property: Energy
        type: PropertyValue
        value: 0.914
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.638
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.069
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.966
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.775
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Nansenchi
  type: MusicAlbum
  date published: 2020-05-27
album: Ganbarusagi
  type: MusicAlbum
  date published: 2020-06-26
album: Hutaribotti
  type: MusicAlbum
  date published: 2020-08-21
album: Seigi
  type: MusicAlbum
  date published: 2021-01-18
  track: Seigi
    type: MusicRecording
    duration: PT2M41S
    duration ms: 161777
    explicit: false
    by artist: Ujita Mai
    in album: Seigi
      type: MusicAlbum
      date published: 2021-01-18
    genre: j-pop
    isrc code: TCJPN2049311
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T13:29:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcd3e377899a04753b6c222d0381e627d76778f93a1c7ca759e294d2a80869483
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956790
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956790
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPN2049311
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T12:31:54Z
    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 0xcd3e377899a04753b6c222d0381e627d76778f93a1c7ca759e294d2a80869483. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPN2049311.
      date published: 2026-07-05T12:31:54Z
    audio: Seigi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.978
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.739
      additional property: Energy
      additional property: Speechiness
      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: Horn
album: Excite
album: SHUPPI

Energy
type: PropertyValue
value: 0.883

Speechiness
type: PropertyValue
value: 0.037

Acousticness
type: PropertyValue
value: 0.651

Instrumentalness
type: PropertyValue
value: 0.004

Liveness
type: PropertyValue
value: 0.094

Valence (Positivity)
type: PropertyValue
value: 0.853

Loudness (dB)
type: PropertyValue
value: -4.639

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major

Horn
type: MusicAlbum
date published: 2021-09-25

Excite
type: MusicAlbum
date published: 2023-07-18

SHUPPI
type: MusicAlbum
date published: 2024-06-01