TAKUMA
type: MusicGroup
description: Takuma (written: 拓磨, 拓真, 拓馬, 琢磨, 匠馬, 卓磨, 卓真 or 卓馬) is a masculine Japanese given name. Notable people with the name include: , Japanese footballer , Japanese baseball player , Japanese motorcycle rac
popularity: 3
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b28e45b84958d90914c7bfc68cf7a4c5f0c66418387d940c792c5d3f4d71c38
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16fdf758-b107-4d44-83e1-688f83f5584f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16fdf758-b107-4d44-83e1-688f83f5584f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16fdf758-b107-4d44-83e1-688f83f5584f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
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 0x6b28e45b84958d90914c7bfc68cf7a4c5f0c66418387d940c792c5d3f4d71c38. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16fdf758-b107-4d44-83e1-688f83f5584f.json and https://artists.proofprofile.net/proofs/artist/16fdf758-b107-4d44-83e1-688f83f5584f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
album: All Behind
  type: MusicAlbum
  date published: 2019-10-01
album: I Love You
  type: MusicAlbum
  date published: 2020-01-12
album: Vibe With Me
  type: MusicAlbum
  date published: 2020-04-01
album: Vibe With Me
  type: MusicAlbum
  date published: 2020-04-02
album: Going Through
  type: MusicAlbum
  date published: 2020-04-08
album: When the Sun Sets
  type: MusicAlbum
  date published: 2020-04-23
album: When The Sun Sets
  type: MusicAlbum
  date published: 2020-05-02
album: Strange Love
  type: MusicAlbum
  date published: 2020-08-04
  track: Strange Love
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182491
    explicit: false
    by artist: TAKUMA
    in album: Strange Love
      type: MusicAlbum
      date published: 2020-08-04
    isrc code: QMEZE1760222
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:50:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1560ef98f2a7c439d53ee00be472375214f8039977ffebec64c873aa8c427a23
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEZE1760222
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x1560ef98f2a7c439d53ee00be472375214f8039977ffebec64c873aa8c427a23. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMEZE1760222.
      date published: 2026-07-05T01:12:41Z
    audio: Strange Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.924
      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: 0.649
      additional property: Energy
        type: PropertyValue
        value: 0.329
      additional property: Speechiness
        type: PropertyValue
        value: 0.092
      additional property: Acousticness
        type: PropertyValue
        value: 0.315
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.153
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.618
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.304
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Froze
  type: MusicAlbum
  date published: 2020-08-30
album: Feels like Yesterday
  type: MusicAlbum
  date published: 2021-02-15
album: Sweet Escape
  type: MusicAlbum
  date published: 2021-11-02
album: Reflection
  type: MusicAlbum
  date published: 2021-11-06
album: Slow Jam
  type: MusicAlbum
  date published: 2021-11-11
album: Reflection
  type: MusicAlbum
  date published: 2022-01-21
album: Need Me
  type: MusicAlbum
  date published: 2022-03-27
album: A Lover's Heartbeat
  type: MusicAlbum
  date published: 2022-07-28
album: Quiet!
  type: MusicAlbum
  date published: 2022-11-26
album: How Do I Know?
  type: MusicAlbum
  date published: 2023-08-15
album: Race to the Fame
  type: MusicAlbum
  date published: 2023-08-27
album: Message (Sped Up)
  type: MusicAlbum
  date published: 2023-09-20
album: Message
  type: MusicAlbum
  date published: 2023-09-20
album: The Rose
  type: MusicAlbum
  date published: 2024-03-01
album: Loving You
  type: MusicAlbum
  date published: 2024-03-16
album: Bet
  type: MusicAlbum
  date published: 2024-03-18