Jun Naotsuka
type: MusicGroup
genre: celtic
popularity: 2
followers: 230
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe633d8ea4e7e0daa25fffc34d65e41cb6b8cf023b88fc6748b377bad529a2a49
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9127c401-d19b-44ae-b8b4-562a008eb647.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9127c401-d19b-44ae-b8b4-562a008eb647.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9127c401-d19b-44ae-b8b4-562a008eb647
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe633d8ea4e7e0daa25fffc34d65e41cb6b8cf023b88fc6748b377bad529a2a49","name":"Jun Naotsuka","registered_at":"2026-06-17T16:16:12Z","symbol":"NIM1449869","token_address":"0x1c5de4c29b095b54e2d912ddd0ade720f1199a86","type":"artist","uuid":"9127c401-d19b-44ae-b8b4-562a008eb647"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe633d8ea4e7e0daa25fffc34d65e41cb6b8cf023b88fc6748b377bad529a2a49. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9127c401-d19b-44ae-b8b4-562a008eb647.json and https://artists.proofprofile.net/proofs/artist/9127c401-d19b-44ae-b8b4-562a008eb647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xe633d8ea4e7e0daa25fffc34d65e41cb6b8cf023b88fc6748b377bad529a2a49","name":"Jun Naotsuka","registered_at":"2026-06-17T16:16:12Z","symbol":"NIM1449869","token_address":"0x1c5de4c29b095b54e2d912ddd0ade720f1199a86","type":"artist","uuid":"9127c401-d19b-44ae-b8b4-562a008eb647"}
album: Gift from the Sun
  type: MusicAlbum
  date published: 2013-06-09
album: Tribute to Life
  type: MusicAlbum
  date published: 2014-09-22
album: In Search of a Soul
  type: MusicAlbum
  date published: 2016-03-23
album: Alone In Space
  type: MusicAlbum
  date published: 2018-12-03
album: The Bard in You
  type: MusicAlbum
  date published: 2019-04-30
album: Evangelos (Version 1.0)
  type: MusicAlbum
  date published: 2023-05-16
album: Evangelos
  type: MusicAlbum
  date published: 2023-05-17
album: Yoisho
  type: MusicAlbum
  date published: 2023-06-13
track: Back to the Sea
  type: MusicRecording
  duration: PT2M54S
  duration ms: 174393
  explicit: false
  by artist: Jun Naotsuka
  in album: Essential Irish-Celtic Playlist
    type: MusicAlbum
    date published: 2015-05-07
  isrc code: US5UL1417968
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T08:10:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x61f8b5594b229e21874b02d48a28cd59ff7f97586c8f7964e7d0454de7a69b88
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5UL1417968
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f8b5594b229e21874b02d48a28cd59ff7f97586c8f7964e7d0454de7a69b88. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US5UL1417968.
    date published: 2026-07-08T03:20:19Z
  audio: Back to the Sea
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.375
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.596
    additional property: Energy
      type: PropertyValue
      value: 0.138
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.897
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.919
    additional property: Liveness
      type: PropertyValue
      value: 0.082
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.12
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.41
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: To the Open Sea on Galway Hooker
  type: MusicRecording
  duration: PT5M58S
  duration ms: 358138
  explicit: false
  by artist: Jun Naotsuka
  in album: Irish Celtic Relaxation
    type: MusicAlbum
    date published: 2015-07-23
  isrc code: US5UL1417970
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-08-01T00:28:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc64c6b2b78781a85d7f5855e06f17a666342ffbfb02abb3b7232a5f5116473e8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960489
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960489
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5UL1417970
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T00:40:43Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c6b2b78781a85d7f5855e06f17a666342ffbfb02abb3b7232a5f5116473e8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US5UL1417970.
    date published: 2026-08-01T00:40:43Z
  audio: To the Open Sea on Galway Hooker
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.515
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    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

Danceability
type: PropertyValue
value: 0.116

Energy
type: PropertyValue
value: 0.409

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.761

Instrumentalness
type: PropertyValue
value: 0.93

Liveness
type: PropertyValue
value: 0.107

Valence (Positivity)
type: PropertyValue
value: 0.07

Loudness (dB)
type: PropertyValue
value: -16.926

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor