中川昌利
type: MusicGroup
genre: japanese indie
popularity: 12
followers: 465
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5eb6ab3466ea206c0177daecbd63746ad9d67357e8ef9223e58a60a8cf94f4e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fb874a2-800c-4035-9dd0-035dd01bf045.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fb874a2-800c-4035-9dd0-035dd01bf045.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7fb874a2-800c-4035-9dd0-035dd01bf045
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5eb6ab3466ea206c0177daecbd63746ad9d67357e8ef9223e58a60a8cf94f4e6","name":"中川昌利","registered_at":"2026-06-14T17:55:13Z","symbol":"NIM0530958","token_address":"0x64c47ad18d490fedf9eada67661c9479f34502e1","type":"artist","uuid":"7fb874a2-800c-4035-9dd0-035dd01bf045"}
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 0x5eb6ab3466ea206c0177daecbd63746ad9d67357e8ef9223e58a60a8cf94f4e6. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fb874a2-800c-4035-9dd0-035dd01bf045.json and https://artists.proofprofile.net/proofs/artist/7fb874a2-800c-4035-9dd0-035dd01bf045.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0x5eb6ab3466ea206c0177daecbd63746ad9d67357e8ef9223e58a60a8cf94f4e6","name":"中川昌利","registered_at":"2026-06-14T17:55:13Z","symbol":"NIM0530958","token_address":"0x64c47ad18d490fedf9eada67661c9479f34502e1","type":"artist","uuid":"7fb874a2-800c-4035-9dd0-035dd01bf045"}
album: やさしいね、
  type: MusicAlbum
  date published: 2018-11-22
album: アホウ
  type: MusicAlbum
  date published: 2019-07-22
album: きらり
  type: MusicAlbum
  date published: 2021-02-10
album: きらり
  type: MusicAlbum
  date published: 2021-02-10
album: わたしあなたあたし
  type: MusicAlbum
  date published: 2021-05-31
album: Machibari
  type: MusicAlbum
  date published: 2021-09-29
album: 藍のハンケチ
  type: MusicAlbum
  date published: 2021-12-22
album: 天使達、
  type: MusicAlbum
  date published: 2022-08-03
album: Epi
  type: MusicAlbum
  date published: 2023-11-29
album: Machibari~きえないアイラブユー~
  type: MusicAlbum
  date published: 2024-08-22
album: Eyes
  type: MusicAlbum
  date published: 2024-08-22
album: 藍のハンケチ
  type: MusicAlbum
  date published: 2024-08-22
album: i'm not in love!
  type: MusicAlbum
  date published: 2024-08-22
album: エピ
  type: MusicAlbum
  date published: 2024-09-05
album: ハタメキ
  type: MusicAlbum
  date published: 2024-09-05
album: 指わ物語
  type: MusicAlbum
  date published: 2024-09-05
album: ダイスキダイスキダイスキ
  type: MusicAlbum
  date published: 2024-09-18
album: フィアンセっ！
  type: MusicAlbum
  date published: 2024-11-13
album: 硝子色の街、恋人
  type: MusicAlbum
  date published: 2025-01-15
album: 悪魔さん
  type: MusicAlbum
  date published: 2025-02-12
  track: 悪魔さん
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199000
    explicit: false
    by artist: 中川昌利
    in album: 悪魔さん
      type: MusicAlbum
      date published: 2025-02-12
    genre: japanese indie
    isrc code: JPB622401671
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5d43eb5a38131331071881e2a2805706d85eb7609bea3634dff3afd9441083fc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958947
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958947
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB622401671
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T03:36:47Z
    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 0x5d43eb5a38131331071881e2a2805706d85eb7609bea3634dff3afd9441083fc. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:47Z), 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/JPB622401671.
      date published: 2026-07-21T03:36:47Z
    audio: 悪魔さん
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.061
      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: 0.618
      additional property: Energy
        type: PropertyValue
        value: 0.641
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.077
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.124
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.777
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.426
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 君と出会う前の気持ちを僕は思い出せない
  type: MusicAlbum
  date published: 2025-03-05
  track: 悪魔さん
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199000
    explicit: false
    by artist: 中川昌利
    in album: 君と出会う前の気持ちを僕は思い出せない
      type: MusicAlbum
      date published: 2025-03-05
    genre: japanese indie
    isrc code: JPB622401671
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T13:14:07+00:00
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 悪魔さん
  track: きらり (New mix)
  track: キラーフレーズ

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x5d43eb5a38131331071881e2a2805706d85eb7609bea3634dff3afd9441083fc

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958420

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958420

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB622401671

OTSTimestamp
type: PropertyValue
value: 2026-07-17T13:33:01Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d43eb5a38131331071881e2a2805706d85eb7609bea3634dff3afd9441083fc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPB622401671.
date published: 2026-07-17T13:33:01Z

悪魔さん
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 145.061
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: 0.618
additional property: Energy
  type: PropertyValue
  value: 0.641
additional property: Speechiness
  type: PropertyValue
  value: 0.029
additional property: Acousticness
  type: PropertyValue
  value: 0.077
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.124
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.777
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.426
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

きらり (New mix)
type: MusicRecording
duration: PT4M10S
duration ms: 250973
explicit: false
by artist: 中川昌利
in album: 君と出会う前の気持ちを僕は思い出せない
  type: MusicAlbum
  date published: 2025-03-05
genre: japanese indie
isrc code: JPB622401674
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T00:52:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab258ebce069e0abb45d858854ccf59869ffd99e7e3dab32cf00d214b712b9ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956857
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB622401674
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:26:17Z
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 0xab258ebce069e0abb45d858854ccf59869ffd99e7e3dab32cf00d214b712b9ea. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPB622401674.
  date published: 2026-07-06T01:26:17Z
audio: きらり (New mix)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.958
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.702
  additional property: Energy
    type: PropertyValue
    value: 0.523
  additional property: Speechiness
    type: PropertyValue
    value: 0.028
  additional property: Acousticness
    type: PropertyValue
    value: 0.233
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.699
  additional property: Loudness (dB)
    type: PropertyValue
    value: -5.686
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

キラーフレーズ
type: MusicRecording
duration: PT5M45S
duration ms: 345186
explicit: false
by artist: 中川昌利
in album: 君と出会う前の気持ちを僕は思い出せない
  type: MusicAlbum
  date published: 2025-03-05
genre: japanese indie
isrc code: JPB622401679
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T16:09:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf9bf5a827c406fe1ba37d71507f71ab15f088527b225f7e2fd6c577dcb551c8f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956560
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956560
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB622401679
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T23:28:02Z
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 0xf9bf5a827c406fe1ba37d71507f71ab15f088527b225f7e2fd6c577dcb551c8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPB622401679.
  date published: 2026-07-03T23:28:02Z
audio: キラーフレーズ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 171.964
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.588
  additional property: Energy
    type: PropertyValue
    value: 0.455
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.441
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.008
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.538
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.929
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major