Riku Oshima
type: MusicGroup
genre: j-rap
genre: j-r&b
popularity: 4
followers: 485
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77f50d16157f134010b2fc502edb88c9d5fc8653839746d9dade7da44bc8b55a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953950
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953950
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/247f87d1-0c1e-4eeb-bf56-660fec25de46.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/247f87d1-0c1e-4eeb-bf56-660fec25de46.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/247f87d1-0c1e-4eeb-bf56-660fec25de46
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:35:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x77f50d16157f134010b2fc502edb88c9d5fc8653839746d9dade7da44bc8b55a","name":"Riku Oshima","registered_at":"2026-06-16T02:16:50Z","symbol":"NIM0906054","token_address":"0x17772c89ba745ed2cda23a4576330e992c564616","type":"artist","uuid":"247f87d1-0c1e-4eeb-bf56-660fec25de46"}
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 0x77f50d16157f134010b2fc502edb88c9d5fc8653839746d9dade7da44bc8b55a. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/247f87d1-0c1e-4eeb-bf56-660fec25de46.json and https://artists.proofprofile.net/proofs/artist/247f87d1-0c1e-4eeb-bf56-660fec25de46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x77f50d16157f134010b2fc502edb88c9d5fc8653839746d9dade7da44bc8b55a","name":"Riku Oshima","registered_at":"2026-06-16T02:16:50Z","symbol":"NIM0906054","token_address":"0x17772c89ba745ed2cda23a4576330e992c564616","type":"artist","uuid":"247f87d1-0c1e-4eeb-bf56-660fec25de46"}
album: Mellow
  type: MusicAlbum
  date published: 2020-01-08
album: Mellow
  type: MusicAlbum
  date published: 2020-01-08
album: Daisy
  type: MusicAlbum
  date published: 2020-02-20
album: Daisy
  type: MusicAlbum
  date published: 2020-02-20
album: Magic
  type: MusicAlbum
  date published: 2020-03-17
album: 1Chome Model City
  type: MusicAlbum
  date published: 2020-06-01
album: 1Chome Model City
  type: MusicAlbum
  date published: 2020-06-01
album: Shower
  type: MusicAlbum
  date published: 2020-09-02
album: Kinmokusei
  type: MusicAlbum
  date published: 2020-12-09
album: samui
  type: MusicAlbum
  date published: 2020-12-19
album: samui
  type: MusicAlbum
  date published: 2020-12-19
album: Space Disco
  type: MusicAlbum
  date published: 2021-04-04
album: Space Disco
  type: MusicAlbum
  date published: 2021-04-04
album: For you
  type: MusicAlbum
  date published: 2021-07-07
album: Sunshine
  type: MusicAlbum
  date published: 2021-08-18
album: Fake
  type: MusicAlbum
  date published: 2021-09-15
album: This Love
  type: MusicAlbum
  date published: 2021-10-20
album: 年輪
  type: MusicAlbum
  date published: 2021-11-17
album: Just Like You
  type: MusicAlbum
  date published: 2021-12-08
album: Ding Dong
  type: MusicAlbum
  date published: 2021-12-22
album: Bird Call
  type: MusicAlbum
  date published: 2022-03-09
album: BAD DAY
  type: MusicAlbum
  date published: 2022-09-21
album: Bus...
  type: MusicAlbum
  date published: 2022-10-05
album: Cigarette
  type: MusicAlbum
  date published: 2022-10-12
album: I Wanna Be Your Man
  type: MusicAlbum
  date published: 2023-03-08
album: Set me free
  type: MusicAlbum
  date published: 2023-08-16
album: Hanamizuki (feat. Yo Hitoto) [Cover] [Rework]
  type: MusicAlbum
  date published: 2023-09-08
album: 24hour
  type: MusicAlbum
  date published: 2025-04-09
  track: 24hour
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220236
    explicit: false
    by artist: Riku Oshima
    in album: 24hour
      type: MusicAlbum
      date published: 2025-04-09
    genre: j-rap
    genre: j-r&b
    isrc code: JP92J2500356
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T13:11:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb2955734689b8de84dc9437bf8eb13768e9d6436683edcd10af7de40f081a4de
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92J2500356
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xb2955734689b8de84dc9437bf8eb13768e9d6436683edcd10af7de40f081a4de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JP92J2500356.
      date published: 2026-07-05T19:27:56Z
    audio: 24hour
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.014
      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: 0.757
      additional property: Energy
        type: PropertyValue
        value: 0.463
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.012
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.672
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.177
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major