ナミオカコウタロウ
type: MusicGroup
popularity: 19
followers: 1964
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37f449261246822fe4a0770b9c8d982ff5b51eacabb460d616394be1738f1964
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953616
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953616
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f4be15-6919-4a25-acac-8e636a5bcbf4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f4be15-6919-4a25-acac-8e636a5bcbf4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/18f4be15-6919-4a25-acac-8e636a5bcbf4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:58:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x37f449261246822fe4a0770b9c8d982ff5b51eacabb460d616394be1738f1964","name":"ナミオカコウタロウ","registered_at":"2026-06-14T07:05:44Z","symbol":"NIM0376039","token_address":"0xac1ea28347b07fed81b61cb9a5ed6a6f14b7316c","type":"artist","uuid":"18f4be15-6919-4a25-acac-8e636a5bcbf4"}
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 0x37f449261246822fe4a0770b9c8d982ff5b51eacabb460d616394be1738f1964. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18f4be15-6919-4a25-acac-8e636a5bcbf4.json and https://artists.proofprofile.net/proofs/artist/18f4be15-6919-4a25-acac-8e636a5bcbf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:58:35Z
  text: {"copyright_id":"0x37f449261246822fe4a0770b9c8d982ff5b51eacabb460d616394be1738f1964","name":"ナミオカコウタロウ","registered_at":"2026-06-14T07:05:44Z","symbol":"NIM0376039","token_address":"0xac1ea28347b07fed81b61cb9a5ed6a6f14b7316c","type":"artist","uuid":"18f4be15-6919-4a25-acac-8e636a5bcbf4"}
album: 星を見にいこうぜ
  type: MusicAlbum
  date published: 2018-09-06
album: サムシングブルー
  type: MusicAlbum
  date published: 2019-06-29
  track: 旅の途中
    type: MusicRecording
    duration: PT3M29S
    duration ms: 209920
    explicit: false
    by artist: ナミオカコウタロウ
    in album: サムシングブルー
      type: MusicAlbum
      date published: 2019-06-29
    isrc code: TCJPJ1915918
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:40:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb67842c5d311b00cde2d8528f6b4c6b5990ea4b5b7c37981a2c24f909bff675
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1915918
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xdb67842c5d311b00cde2d8528f6b4c6b5990ea4b5b7c37981a2c24f909bff675. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ1915918.
      date published: 2026-07-05T10:01:46Z
    audio: 旅の途中
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.967
      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: 0.637
      additional property: Energy
        type: PropertyValue
        value: 0.827
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.017
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.4
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.772
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: アマレットジンジャー
  type: MusicAlbum
  date published: 2021-11-27
album: めんどくせぇ
  type: MusicAlbum
  date published: 2022-04-29
album: アマヤドリ
  type: MusicAlbum
  date published: 2022-12-16
album: アマヤドリ (Remix)
  type: MusicAlbum
  date published: 2023-01-28
album: LOVE/HATE
  type: MusicAlbum
  date published: 2023-07-29
album: Beautiful smile
  type: MusicAlbum
  date published: 2023-08-30