Niko Nakamura
type: MusicGroup
popularity: 14
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d174ddfe47fa8f358e298e1309795dc3659e04ddc3faaf7f67fd962fb6c7757
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953617
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953617
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cd27df9-1744-43c2-abd7-122fbba6af6b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cd27df9-1744-43c2-abd7-122fbba6af6b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1cd27df9-1744-43c2-abd7-122fbba6af6b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:00:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3d174ddfe47fa8f358e298e1309795dc3659e04ddc3faaf7f67fd962fb6c7757","name":"Niko Nakamura","registered_at":"2026-06-14T07:25:32Z","symbol":"NIM0380763","token_address":"0x9963170c006d42cccb1859966291d164a6a74c6c","type":"artist","uuid":"1cd27df9-1744-43c2-abd7-122fbba6af6b"}
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 0x3d174ddfe47fa8f358e298e1309795dc3659e04ddc3faaf7f67fd962fb6c7757. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cd27df9-1744-43c2-abd7-122fbba6af6b.json and https://artists.proofprofile.net/proofs/artist/1cd27df9-1744-43c2-abd7-122fbba6af6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:36:10Z
  text: {"copyright_id":"0x3d174ddfe47fa8f358e298e1309795dc3659e04ddc3faaf7f67fd962fb6c7757","name":"Niko Nakamura","registered_at":"2026-06-14T07:25:32Z","symbol":"NIM0380763","token_address":"0x9963170c006d42cccb1859966291d164a6a74c6c","type":"artist","uuid":"1cd27df9-1744-43c2-abd7-122fbba6af6b"}
album: Yume
  type: MusicAlbum
  date published: 2022-06-17
album: Nube
  type: MusicAlbum
  date published: 2023-04-14
album: Kashika
  type: MusicAlbum
  date published: 2023-05-05
album: Andar
  type: MusicAlbum
  date published: 2023-08-25
album: Neru
  type: MusicAlbum
  date published: 2024-11-01
album: Neru Deep
  type: MusicAlbum
  date published: 2024-11-22
album: Shizuka
  type: MusicAlbum
  date published: 2024-12-13
album: Umi
  type: MusicAlbum
  date published: 2025-01-10
  track: Umi
    type: MusicRecording
    duration: PT2M43S
    duration ms: 163533
    explicit: false
    by artist: Niko Nakamura
    in album: Umi
      type: MusicAlbum
      date published: 2025-01-10
    isrc code: USY242465542
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:01:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4017944a7d8379f1af403e11ac309638a9a4494c59275a02414c8aaaed683cd6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY242465542
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0x4017944a7d8379f1af403e11ac309638a9a4494c59275a02414c8aaaed683cd6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USY242465542.
      date published: 2026-07-05T04:47:21Z
    audio: Umi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 72.647
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.22
      additional property: Energy
        type: PropertyValue
        value: 0.02
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.976
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.667
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.056
      additional property: Loudness (dB)
        type: PropertyValue
        value: -40.184
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cirrus
  type: MusicAlbum
  date published: 2025-02-14
  track: Cirrus
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173367
    explicit: false
    by artist: Niko Nakamura
    in album: Cirrus
      type: MusicAlbum
      date published: 2025-02-14
    isrc code: USCGH2576425
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T22:54:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8c1dc48002b97bc0101e78d06afe08a9b89a01090a3cb23972d4b5b375ebe2a4
    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/USCGH2576425
    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 0x8c1dc48002b97bc0101e78d06afe08a9b89a01090a3cb23972d4b5b375ebe2a4. 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/USCGH2576425.
      date published: 2026-07-12T23:17:00Z
    audio: Cirrus
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.792
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
      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: Mori
album: Hoshi
album: Gekkou
album: Short Drift
album: Yoru
album: Ikenobo

Danceability
type: PropertyValue
value: 0.125

Energy
type: PropertyValue
value: 0.096

Speechiness
type: PropertyValue
value: 0.116

Acousticness
type: PropertyValue
value: 0.989

Instrumentalness
type: PropertyValue
value: 0.756

Liveness
type: PropertyValue
value: 0.096

Valence (Positivity)
type: PropertyValue
value: 0.034

Loudness (dB)
type: PropertyValue
value: -31.652

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Mori
type: MusicAlbum
date published: 2025-03-14

Hoshi
type: MusicAlbum
date published: 2025-04-04

Gekkou
type: MusicAlbum
date published: 2025-05-02
track: Gekkou
  type: MusicRecording
  duration: PT2M53S
  duration ms: 173627
  explicit: false
  by artist: Niko Nakamura
  in album: Gekkou
    type: MusicAlbum
    date published: 2025-05-02
  isrc code: USDY42584221
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T19:40:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0f6c02bbe59b2fb1b38713fde08df52d14dbee61dc397853c246e7cc45272a92
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958774
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958774
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42584221
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T22:42:03Z
  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 0x0f6c02bbe59b2fb1b38713fde08df52d14dbee61dc397853c246e7cc45272a92. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:03Z), 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/USDY42584221.
    date published: 2026-07-19T22:42:03Z
  audio: Gekkou
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 64.969
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.259
    additional property: Energy
      type: PropertyValue
      value: 0.178
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.729
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.923
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.036
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.581
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

Short Drift
type: MusicAlbum
date published: 2025-10-03

Yoru
type: MusicAlbum
date published: 2025-10-17

Ikenobo
type: MusicAlbum
date published: 2025-10-31