Uka Roku
type: MusicGroup
popularity: 5
followers: 443
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b67c3bb680114f6eb93829b97d31c449fd92bef16d9e7c24f68c0fdfda5e2b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4b67c3bb680114f6eb93829b97d31c449fd92bef16d9e7c24f68c0fdfda5e2b7","name":"Uka Roku","registered_at":"2026-06-21T06:18:49Z","symbol":"NIM1845724","token_address":"0x9d964aa84db88b538dd2d3951d10a0d0c8a98895","type":"artist","uuid":"e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6"}
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 0x4b67c3bb680114f6eb93829b97d31c449fd92bef16d9e7c24f68c0fdfda5e2b7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6.json and https://artists.proofprofile.net/proofs/artist/e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4b67c3bb680114f6eb93829b97d31c449fd92bef16d9e7c24f68c0fdfda5e2b7","name":"Uka Roku","registered_at":"2026-06-21T06:18:49Z","symbol":"NIM1845724","token_address":"0x9d964aa84db88b538dd2d3951d10a0d0c8a98895","type":"artist","uuid":"e05fc4e2-bb42-4b5b-abe5-5a7bf1a787d6"}
album: Oyugikai,HajimariHajimari
  type: MusicAlbum
  date published: 2021-12-01
album: Hodokete,Ambivalence
  type: MusicAlbum
  date published: 2022-01-19
  track: Hodokete,Ambivalence (feat.ACCAMER)
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207717
    explicit: false
    by artist: Uka Roku
    in album: Hodokete,Ambivalence
      type: MusicAlbum
      date published: 2022-01-19
    isrc code: JPJ222101845
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf17f0d332236ddb35aa71e14f379a0d66e25c8e5316c9baddcf67e4bc3515161
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958447
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958447
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPJ222101845
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:47:19Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f0d332236ddb35aa71e14f379a0d66e25c8e5316c9baddcf67e4bc3515161. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPJ222101845.
      date published: 2026-07-17T19:47:19Z
    audio: Hodokete,Ambivalence (feat.ACCAMER)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 183.997
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.573
      additional property: Energy
        type: PropertyValue
        value: 0.963
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.133
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.075
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.966
      additional property: Loudness (dB)
        type: PropertyValue
        value: -0.658
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Order, Ose no mama ni
  type: MusicAlbum
  date published: 2022-04-13
album: Nuritsubusou,Clarity (feat. ACCAMER)
  type: MusicAlbum
  date published: 2022-07-15
album: Kakikeshite,Quartet
  type: MusicAlbum
  date published: 2022-08-17
album: Kenbousan, Kotchimuite
  type: MusicAlbum
  date published: 2023-02-24