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: 36
followers: 464
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc06a387a26d80080bd9d6f2071eb329f24ac8e05c596a870be94b810dfdf8651
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a387a26d80080bd9d6f2071eb329f24ac8e05c596a870be94b810dfdf8651. 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/f52d2d19-0e9b-40a0-ad57-26dd45a9c3fc.json and https://artists.proofprofile.net/proofs/artist/f52d2d19-0e9b-40a0-ad57-26dd45a9c3fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: love&peace(HIGHSCHOOLSINGER.JP)
  type: MusicAlbum
  date published: 2016-03-09
album: Algorab
  type: MusicAlbum
  date published: 2017-04-14
album: EIGA
  type: MusicAlbum
  date published: 2018-11-22
album: Bad boy
  type: MusicAlbum
  date published: 2022-12-18
album: Hot Box
  type: MusicAlbum
  date published: 2023-05-20
album: Hustle&Flow
  type: MusicAlbum
  date published: 2023-10-13
album: hidane (feat. Na-ri & TENMA)
  type: MusicAlbum
  date published: 2024-03-06
album: LIFE is GAMBL
  type: MusicAlbum
  date published: 2025-05-17
track: DA NA NA
track: Jamaica Ska - feat.キヨサク(MONGOL800)& TAKUMA(10-FEET)

DA NA NA
type: MusicRecording
duration: PT1M42S
duration ms: 102240
explicit: false
by artist: TOTALFAT
by artist: Takuma
in album: THE BEST FAT COLLECTION
  type: MusicAlbum
  date published: 2013-12-11
genre: skate-punk
genre: melodic-hardcore
genre: j-rock
isrc code: JPKS01301988
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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  value: true
additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d199365372203ccea6d8a563be7da5e9f39e71005a2708db072b006bc0c053. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPKS01301988.
  date published: 2026-06-13T15:41:10Z
audio: DA NA NA
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.929
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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    value: 0.001
  additional property: Liveness
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    value: 0.047
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.273
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.405
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Jamaica Ska - feat.キヨサク(MONGOL800)& TAKUMA(10-FEET)
type: MusicRecording
duration: PT3M54S
duration ms: 234033
explicit: false
by artist: Tokyo Ska Paradise Orchestra
by artist: キヨサク
by artist: Takuma
in album: ツギハギカラフル
  type: MusicAlbum
  date published: 2019-11-20
isrc code: JPB601903360
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790b2f492505e08979a2824dd1dfb566bc59ce8eb651f48c3ba9b0f6251d078d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPB601903360.
  date published: 2026-07-02T11:34:59Z
audio: Jamaica Ska - feat.キヨサク(MONGOL800)& TAKUMA(10-FEET)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major