KOHAKU
type: MusicGroup
genre: modern-j-rock
popularity: 30
followers: 10227
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c1d6b0ca02fe39f085364ea02accbe5832dbd3a6273bdc96cda7c72e4c2f3d3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66664959-840c-434f-979b-30f6967607db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66664959-840c-434f-979b-30f6967607db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/66664959-840c-434f-979b-30f6967607db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
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 → block must exist at that height 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 0x8c1d6b0ca02fe39f085364ea02accbe5832dbd3a6273bdc96cda7c72e4c2f3d3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66664959-840c-434f-979b-30f6967607db.json and https://artists.proofprofile.net/proofs/artist/66664959-840c-434f-979b-30f6967607db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
album: kibi
  type: MusicAlbum
  date published: 2024-08-07
  track: kibi
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190902
    explicit: false
    by artist: KOHAKU
    in album: kibi
      type: MusicAlbum
      date published: 2024-08-07
    isrc code: JP92A2427710
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-08T17:20:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x37b00524ffd5d8116da88ef62d21dee6d537a60c8382364dab9f846d6a26748a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953528
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/953528
    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/2Yyy0jlzMh9gzDayiCshuP.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Yyy0jlzMh9gzDayiCshuP
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T15:41:10Z
    additional property: OTSCanonicalRecord
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x37b00524ffd5d8116da88ef62d21dee6d537a60c8382364dab9f846d6a26748a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Yyy0jlzMh9gzDayiCshuP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Yyy0jlzMh9gzDayiCshuP.
      date published: 2026-06-13T15:41:10Z
album: アイボリー
  type: MusicAlbum
  date published: 2024-05-29
  track: アイボリー
    type: MusicRecording
    duration: PT4M41S
    duration ms: 281830
    explicit: false
    by artist: KOHAKU
    in album: アイボリー
      type: MusicAlbum
      date published: 2024-05-29
    isrc code: JP92A2415818
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-07T11:32:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953536
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/953536
    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/5pc3jQakaXok0PofJ1gzA6.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5pc3jQakaXok0PofJ1gzA6
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T17:25:41Z
    additional property: OTSCanonicalRecord
      type: PropertyValue
      value: {"copyright_id":"0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac","isrc":"JP92A2415818","name":"アイボリー","registered_at":"2026-06-07T11:32:27Z","spotify_id":"5pc3jQakaXok0PofJ1gzA6","type":"track"}
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5pc3jQakaXok0PofJ1gzA6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5pc3jQakaXok0PofJ1gzA6.
      date published: 2026-06-13T17:25:41Z
      text: {"copyright_id":"0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac","isrc":"JP92A2415818","name":"アイボリー","registered_at":"2026-06-07T11:32:27Z","spotify_id":"5pc3jQakaXok0PofJ1gzA6","type":"track"}
album: 町を編んで
  type: MusicAlbum
  date published: 2023-11-08
  track: 町を編んで
    type: MusicRecording
    duration: PT4M34S
    duration ms: 274611
    explicit: false
    by artist: KOHAKU
    in album: 町を編んで
      type: MusicAlbum
      date published: 2023-11-08
    isrc code: JP92A2319312
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-09T14:24:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/953520
    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/1RSIYUuaJT3ITpZ90wuis3.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1RSIYUuaJT3ITpZ90wuis3
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    additional property: OTSCanonicalRecord
      type: PropertyValue
      value: {"copyright_id":"0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e","isrc":"JP92A2319312","name":"町を編んで","registered_at":"2026-06-09T14:24:59Z","spotify_id":"1RSIYUuaJT3ITpZ90wuis3","type":"track"}
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1RSIYUuaJT3ITpZ90wuis3.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1RSIYUuaJT3ITpZ90wuis3.
      date published: 2026-06-13T13:32:09Z
      text: {"copyright_id":"0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e","isrc":"JP92A2319312","name":"町を編んで","registered_at":"2026-06-09T14:24:59Z","spotify_id":"1RSIYUuaJT3ITpZ90wuis3","type":"track"}
album: 小心者の歌声は
  type: MusicAlbum
  date published: 2023-09-27
  track: 小心者の歌声は
    type: MusicRecording
    duration: PT2M28S
    duration ms: 148900
    explicit: false
    by artist: KOHAKU
    in album: 小心者の歌声は
      type: MusicAlbum
      date published: 2023-09-27
    isrc code: JP92A2315477
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSRecordURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSCanonicalRecord
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
album: 寝坊助の身支度
album: シティーガール
track: シティーガール
track: アイボリー
track: 小心者の歌声は
track: 町を編んで
track: kibi
track: シティーガール - EP Ver.
track: アンドロメダ
track: 恋人たち
track: 放課後の過ごし方

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-10T00:28:47+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953520

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/953520

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/1rOJKtXPTFp3oAm9ei9qUu.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rOJKtXPTFp3oAm9ei9qUu

OTSTimestamp
type: PropertyValue
value: 2026-06-13T13:32:09Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537","isrc":"JP92A2315477","name":"小心者の歌声は","registered_at":"2026-06-10T00:28:47Z","spotify_id":"1rOJKtXPTFp3oAm9ei9qUu","type":"track"}

OTSVerifyInstructions
type: PropertyValue
value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rOJKtXPTFp3oAm9ei9qUu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rOJKtXPTFp3oAm9ei9qUu.
date published: 2026-06-13T13:32:09Z
text: {"copyright_id":"0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537","isrc":"JP92A2315477","name":"小心者の歌声は","registered_at":"2026-06-10T00:28:47Z","spotify_id":"1rOJKtXPTFp3oAm9ei9qUu","type":"track"}

寝坊助の身支度
type: MusicAlbum
date published: 2023-03-01
track: シティーガール - EP Ver.
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217582
  explicit: false
  by artist: KOHAKU
  in album: 寝坊助の身支度
    type: MusicAlbum
    date published: 2023-03-01
  isrc code: JP92A2302149
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T04:21:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956302
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/3qH1ME4ZJT0YBmHSG8EiyE.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3qH1ME4ZJT0YBmHSG8EiyE
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3","isrc":"JP92A2302149","name":"シティーガール - EP Ver.","registered_at":"2026-06-19T04:21:44Z","spotify_id":"3qH1ME4ZJT0YBmHSG8EiyE","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3qH1ME4ZJT0YBmHSG8EiyE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3qH1ME4ZJT0YBmHSG8EiyE.
    date published: 2026-07-02T03:30:09Z
    text: {"copyright_id":"0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3","isrc":"JP92A2302149","name":"シティーガール - EP Ver.","registered_at":"2026-06-19T04:21:44Z","spotify_id":"3qH1ME4ZJT0YBmHSG8EiyE","type":"track"}
track: アンドロメダ
  type: MusicRecording
  duration: PT2M11S
  duration ms: 131645
  explicit: false
  by artist: KOHAKU
  in album: 寝坊助の身支度
    type: MusicAlbum
    date published: 2023-03-01
  isrc code: JP92A2302150
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T00:31:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/2DQaOFjtMf7xuVw8SqU8h7.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DQaOFjtMf7xuVw8SqU8h7
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9","isrc":"JP92A2302150","name":"アンドロメダ","registered_at":"2026-06-10T00:31:19Z","spotify_id":"2DQaOFjtMf7xuVw8SqU8h7","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DQaOFjtMf7xuVw8SqU8h7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DQaOFjtMf7xuVw8SqU8h7.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9","isrc":"JP92A2302150","name":"アンドロメダ","registered_at":"2026-06-10T00:31:19Z","spotify_id":"2DQaOFjtMf7xuVw8SqU8h7","type":"track"}
track: 恋人たち
  type: MusicRecording
  duration: PT3M24S
  duration ms: 204896
  explicit: false
  by artist: KOHAKU
  in album: 寝坊助の身支度
    type: MusicAlbum
    date published: 2023-03-01
  isrc code: JP92A2302151
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T14:45:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953528
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953528
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/1njn1HoT0eU6E7Y8lIxwOL.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1njn1HoT0eU6E7Y8lIxwOL
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173","isrc":"JP92A2302151","name":"恋人たち","registered_at":"2026-06-04T14:45:45Z","spotify_id":"1njn1HoT0eU6E7Y8lIxwOL","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1njn1HoT0eU6E7Y8lIxwOL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1njn1HoT0eU6E7Y8lIxwOL.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173","isrc":"JP92A2302151","name":"恋人たち","registered_at":"2026-06-04T14:45:45Z","spotify_id":"1njn1HoT0eU6E7Y8lIxwOL","type":"track"}
track: 放課後の過ごし方
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235509
  explicit: false
  by artist: KOHAKU
  in album: 寝坊助の身支度
    type: MusicAlbum
    date published: 2023-03-01
  isrc code: JP92A2302152
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-08T00:50:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953536
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953536
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/3skAP3cEjFX8ILeVm4KQrw.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3skAP3cEjFX8ILeVm4KQrw
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T17:25:41Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e","isrc":"JP92A2302152","name":"放課後の過ごし方","registered_at":"2026-06-08T00:50:59Z","spotify_id":"3skAP3cEjFX8ILeVm4KQrw","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3skAP3cEjFX8ILeVm4KQrw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3skAP3cEjFX8ILeVm4KQrw.
    date published: 2026-06-13T17:25:41Z
    text: {"copyright_id":"0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e","isrc":"JP92A2302152","name":"放課後の過ごし方","registered_at":"2026-06-08T00:50:59Z","spotify_id":"3skAP3cEjFX8ILeVm4KQrw","type":"track"}

シティーガール
type: MusicAlbum
date published: 2022-08-17
track: シティーガール
  type: MusicRecording
  duration: PT3M35S
  duration ms: 215581
  explicit: false
  by artist: KOHAKU
  in album: シティーガール
    type: MusicAlbum
    date published: 2022-08-17
  isrc code: JP92A2207141
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T21:31:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953536
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953536
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/0EcMSUsUwqI8ni7HORv7zy.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0EcMSUsUwqI8ni7HORv7zy
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T17:25:41Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb","isrc":"JP92A2207141","name":"シティーガール","registered_at":"2026-06-06T21:31:17Z","spotify_id":"0EcMSUsUwqI8ni7HORv7zy","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0EcMSUsUwqI8ni7HORv7zy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0EcMSUsUwqI8ni7HORv7zy.
    date published: 2026-06-13T17:25:41Z
    text: {"copyright_id":"0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb","isrc":"JP92A2207141","name":"シティーガール","registered_at":"2026-06-06T21:31:17Z","spotify_id":"0EcMSUsUwqI8ni7HORv7zy","type":"track"}

シティーガール
type: MusicRecording
duration: PT3M35S
duration ms: 215581
explicit: false
by artist: KOHAKU
in album: シティーガール
  type: MusicAlbum
  date published: 2022-08-17
isrc code: JP92A2207141
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T21:31:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/0EcMSUsUwqI8ni7HORv7zy.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0EcMSUsUwqI8ni7HORv7zy
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb","isrc":"JP92A2207141","name":"シティーガール","registered_at":"2026-06-06T21:31:17Z","spotify_id":"0EcMSUsUwqI8ni7HORv7zy","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0EcMSUsUwqI8ni7HORv7zy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0EcMSUsUwqI8ni7HORv7zy.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xcbc8e3c5cee9d3a362cbb7eab1b865ce03111a0dec292329038747d4be83a0bb","isrc":"JP92A2207141","name":"シティーガール","registered_at":"2026-06-06T21:31:17Z","spotify_id":"0EcMSUsUwqI8ni7HORv7zy","type":"track"}

アイボリー
type: MusicRecording
duration: PT4M41S
duration ms: 281830
explicit: false
by artist: KOHAKU
in album: アイボリー
  type: MusicAlbum
  date published: 2024-05-29
isrc code: JP92A2415818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T11:32:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5pc3jQakaXok0PofJ1gzA6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5pc3jQakaXok0PofJ1gzA6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac","isrc":"JP92A2415818","name":"アイボリー","registered_at":"2026-06-07T11:32:27Z","spotify_id":"5pc3jQakaXok0PofJ1gzA6","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5pc3jQakaXok0PofJ1gzA6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5pc3jQakaXok0PofJ1gzA6.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x5878bddfb1312b69958544d79e6a9c477e9f8839746341d9c1c4c3a7489876ac","isrc":"JP92A2415818","name":"アイボリー","registered_at":"2026-06-07T11:32:27Z","spotify_id":"5pc3jQakaXok0PofJ1gzA6","type":"track"}

小心者の歌声は
type: MusicRecording
duration: PT2M28S
duration ms: 148900
explicit: false
by artist: KOHAKU
in album: 小心者の歌声は
  type: MusicAlbum
  date published: 2023-09-27
isrc code: JP92A2315477
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T00:28:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1rOJKtXPTFp3oAm9ei9qUu.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rOJKtXPTFp3oAm9ei9qUu
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537","isrc":"JP92A2315477","name":"小心者の歌声は","registered_at":"2026-06-10T00:28:47Z","spotify_id":"1rOJKtXPTFp3oAm9ei9qUu","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rOJKtXPTFp3oAm9ei9qUu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rOJKtXPTFp3oAm9ei9qUu.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0xe3e9d7dcf4b489a877c401cc1bbfcc252a2fe70fae3cf2f44ecfacfa020b8537","isrc":"JP92A2315477","name":"小心者の歌声は","registered_at":"2026-06-10T00:28:47Z","spotify_id":"1rOJKtXPTFp3oAm9ei9qUu","type":"track"}

町を編んで
type: MusicRecording
duration: PT4M34S
duration ms: 274611
explicit: false
by artist: KOHAKU
in album: 町を編んで
  type: MusicAlbum
  date published: 2023-11-08
isrc code: JP92A2319312
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T14:24:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1RSIYUuaJT3ITpZ90wuis3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1RSIYUuaJT3ITpZ90wuis3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e","isrc":"JP92A2319312","name":"町を編んで","registered_at":"2026-06-09T14:24:59Z","spotify_id":"1RSIYUuaJT3ITpZ90wuis3","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1RSIYUuaJT3ITpZ90wuis3.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1RSIYUuaJT3ITpZ90wuis3.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0xfbb61bcef07badff893419fe94b6f84bf60e2178c753c0674ac68359eb33fb2e","isrc":"JP92A2319312","name":"町を編んで","registered_at":"2026-06-09T14:24:59Z","spotify_id":"1RSIYUuaJT3ITpZ90wuis3","type":"track"}

kibi
type: MusicRecording
duration: PT3M10S
duration ms: 190902
explicit: false
by artist: KOHAKU
in album: kibi
  type: MusicAlbum
  date published: 2024-08-07
isrc code: JP92A2427710
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T17:20:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37b00524ffd5d8116da88ef62d21dee6d537a60c8382364dab9f846d6a26748a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2Yyy0jlzMh9gzDayiCshuP.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Yyy0jlzMh9gzDayiCshuP
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x37b00524ffd5d8116da88ef62d21dee6d537a60c8382364dab9f846d6a26748a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Yyy0jlzMh9gzDayiCshuP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Yyy0jlzMh9gzDayiCshuP.
  date published: 2026-06-13T15:41:10Z

シティーガール - EP Ver.
type: MusicRecording
duration: PT3M37S
duration ms: 217582
explicit: false
by artist: KOHAKU
in album: 寝坊助の身支度
  type: MusicAlbum
  date published: 2023-03-01
isrc code: JP92A2302149
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T04:21:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956302
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3qH1ME4ZJT0YBmHSG8EiyE.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3qH1ME4ZJT0YBmHSG8EiyE
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3","isrc":"JP92A2302149","name":"シティーガール - EP Ver.","registered_at":"2026-06-19T04:21:44Z","spotify_id":"3qH1ME4ZJT0YBmHSG8EiyE","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3qH1ME4ZJT0YBmHSG8EiyE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3qH1ME4ZJT0YBmHSG8EiyE.
  date published: 2026-07-02T03:30:09Z
  text: {"copyright_id":"0xb14d054ea733e66ecbc6ea355be4e0e2fe8f7f6d5aa5547fdda41cb70ed942f3","isrc":"JP92A2302149","name":"シティーガール - EP Ver.","registered_at":"2026-06-19T04:21:44Z","spotify_id":"3qH1ME4ZJT0YBmHSG8EiyE","type":"track"}

アンドロメダ
type: MusicRecording
duration: PT2M11S
duration ms: 131645
explicit: false
by artist: KOHAKU
in album: 寝坊助の身支度
  type: MusicAlbum
  date published: 2023-03-01
isrc code: JP92A2302150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T00:31:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2DQaOFjtMf7xuVw8SqU8h7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DQaOFjtMf7xuVw8SqU8h7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9","isrc":"JP92A2302150","name":"アンドロメダ","registered_at":"2026-06-10T00:31:19Z","spotify_id":"2DQaOFjtMf7xuVw8SqU8h7","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DQaOFjtMf7xuVw8SqU8h7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DQaOFjtMf7xuVw8SqU8h7.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0x78ba414c715286a36d06f224ac55c0180d7649cd6e428d89c137c287c555abd9","isrc":"JP92A2302150","name":"アンドロメダ","registered_at":"2026-06-10T00:31:19Z","spotify_id":"2DQaOFjtMf7xuVw8SqU8h7","type":"track"}

恋人たち
type: MusicRecording
duration: PT3M24S
duration ms: 204896
explicit: false
by artist: KOHAKU
in album: 寝坊助の身支度
  type: MusicAlbum
  date published: 2023-03-01
isrc code: JP92A2302151
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T14:45:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1njn1HoT0eU6E7Y8lIxwOL.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1njn1HoT0eU6E7Y8lIxwOL
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173","isrc":"JP92A2302151","name":"恋人たち","registered_at":"2026-06-04T14:45:45Z","spotify_id":"1njn1HoT0eU6E7Y8lIxwOL","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1njn1HoT0eU6E7Y8lIxwOL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1njn1HoT0eU6E7Y8lIxwOL.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x7ac01ed7e330b7547f297cd200a5d258462f78dc1a4a709a255601f4bfb12173","isrc":"JP92A2302151","name":"恋人たち","registered_at":"2026-06-04T14:45:45Z","spotify_id":"1njn1HoT0eU6E7Y8lIxwOL","type":"track"}

放課後の過ごし方
type: MusicRecording
duration: PT3M55S
duration ms: 235509
explicit: false
by artist: KOHAKU
in album: 寝坊助の身支度
  type: MusicAlbum
  date published: 2023-03-01
isrc code: JP92A2302152
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T00:50:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3skAP3cEjFX8ILeVm4KQrw.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3skAP3cEjFX8ILeVm4KQrw
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e","isrc":"JP92A2302152","name":"放課後の過ごし方","registered_at":"2026-06-08T00:50:59Z","spotify_id":"3skAP3cEjFX8ILeVm4KQrw","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. 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 0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3skAP3cEjFX8ILeVm4KQrw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3skAP3cEjFX8ILeVm4KQrw.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xd3111764fbf0a51d7a05961fa89fcc2fe57819827aafaa99ab3abc2e5144134e","isrc":"JP92A2302152","name":"放課後の過ごし方","registered_at":"2026-06-08T00:50:59Z","spotify_id":"3skAP3cEjFX8ILeVm4KQrw","type":"track"}