わたなべまき
type: MusicGroup
popularity: 10
followers: 39
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4c2eba862e3cd12b459e7f707a53413fa5e5ef6e9b861ed2e60ece5e5c1b3c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954729
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954729
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb88b2d4-4f89-45bc-96b4-c4766d238453.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fb88b2d4-4f89-45bc-96b4-c4766d238453.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fb88b2d4-4f89-45bc-96b4-c4766d238453
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:16:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe4c2eba862e3cd12b459e7f707a53413fa5e5ef6e9b861ed2e60ece5e5c1b3c2","name":"わたなべまき","registered_at":"2026-06-21T17:09:25Z","symbol":"NIM1982128","token_address":"0x32adf7727e64d12ac5712642542e887dceb33f17","type":"artist","uuid":"fb88b2d4-4f89-45bc-96b4-c4766d238453"}
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 0xe4c2eba862e3cd12b459e7f707a53413fa5e5ef6e9b861ed2e60ece5e5c1b3c2. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb88b2d4-4f89-45bc-96b4-c4766d238453.json and https://artists.proofprofile.net/proofs/artist/fb88b2d4-4f89-45bc-96b4-c4766d238453.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0xe4c2eba862e3cd12b459e7f707a53413fa5e5ef6e9b861ed2e60ece5e5c1b3c2","name":"わたなべまき","registered_at":"2026-06-21T17:09:25Z","symbol":"NIM1982128","token_address":"0x32adf7727e64d12ac5712642542e887dceb33f17","type":"artist","uuid":"fb88b2d4-4f89-45bc-96b4-c4766d238453"}
album: Voice -答えは自分の中に-
  type: MusicAlbum
  date published: 2019-11-12
album: わたしを、生きる
  type: MusicAlbum
  date published: 2021-05-08
album: 体温
  type: MusicAlbum
  date published: 2024-06-12
album: 2025
  type: MusicAlbum
  date published: 2025-06-04
album: 朝MOYAコーヒー
  type: MusicAlbum
  date published: 2025-10-31
  track: 朝MOYAコーヒー
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259452
    explicit: false
    by artist: わたなべまき
    in album: 朝MOYAコーヒー
      type: MusicAlbum
      date published: 2025-10-31
    isrc code: QT66K2531786
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T09:25:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x299bc723b124b86bdec441276bdf2eb3219b0cae1d225017938a3b9516f05fb4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT66K2531786
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0x299bc723b124b86bdec441276bdf2eb3219b0cae1d225017938a3b9516f05fb4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT66K2531786.
      date published: 2026-07-17T19:12:23Z
    audio: 朝MOYAコーヒー
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.035
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.79
      additional property: Energy
        type: PropertyValue
        value: 0.369
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.625
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.367
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.539
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.125
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major