Yu Namikoshi
type: MusicGroup
genre: traditional music
popularity: 6
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc7b2bc4516ac3e1dfbd89dabe9566c417f5a3564214a214fa5f3025554ef976
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a39f8e1b-4769-4cf7-865e-5fb18711757f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a39f8e1b-4769-4cf7-865e-5fb18711757f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a39f8e1b-4769-4cf7-865e-5fb18711757f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc7b2bc4516ac3e1dfbd89dabe9566c417f5a3564214a214fa5f3025554ef976","name":"Yu Namikoshi","registered_at":"2026-06-20T06:47:55Z","symbol":"NIM1544364","token_address":"0x813052dde213ca895d7bf4d1c1c3d26e8384670d","type":"artist","uuid":"a39f8e1b-4769-4cf7-865e-5fb18711757f"}
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 0xbc7b2bc4516ac3e1dfbd89dabe9566c417f5a3564214a214fa5f3025554ef976. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a39f8e1b-4769-4cf7-865e-5fb18711757f.json and https://artists.proofprofile.net/proofs/artist/a39f8e1b-4769-4cf7-865e-5fb18711757f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xbc7b2bc4516ac3e1dfbd89dabe9566c417f5a3564214a214fa5f3025554ef976","name":"Yu Namikoshi","registered_at":"2026-06-20T06:47:55Z","symbol":"NIM1544364","token_address":"0x813052dde213ca895d7bf4d1c1c3d26e8384670d","type":"artist","uuid":"a39f8e1b-4769-4cf7-865e-5fb18711757f"}
album: Made In Japan
  type: MusicAlbum
  date published: 2018-07-18
album: Asian Repetita - China
  type: MusicAlbum
  date published: 2021-03-13
album: Asian Repetita - Japan
  type: MusicAlbum
  date published: 2021-03-14
album: Ambient Asia - Asian Bell
  type: MusicAlbum
  date published: 2021-03-18
album: Ambient Asia - Ambient Japan
  type: MusicAlbum
  date published: 2021-03-19
album: Japanese New Year
  type: MusicAlbum
  date published: 2021-03-24
  track: Traditional Shougatsu
    type: MusicRecording
    duration: PT2M12S
    duration ms: 132000
    explicit: false
    by artist: Yu Namikoshi
    in album: Japanese New Year
      type: MusicAlbum
      date published: 2021-03-24
    genre: traditional music
    isrc code: JPZ922013438
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T10:57:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x75a512397f1a19cc2072bba7198658ac0d77850d852f570c5aaebbe70314ba36
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958153
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958153
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922013438
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T12:03:04Z
    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 0x75a512397f1a19cc2072bba7198658ac0d77850d852f570c5aaebbe70314ba36. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPZ922013438.
      date published: 2026-07-15T12:03:04Z
    audio: Traditional Shougatsu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.969
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.657
      additional property: Energy
        type: PropertyValue
        value: 0.179
      additional property: Speechiness
        type: PropertyValue
        value: 0.086
      additional property: Acousticness
        type: PropertyValue
        value: 0.951
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.804
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.264
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.493
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor