Yonezawa Sumitomo
type: MusicGroup
genre: lullaby
popularity: 25
followers: 590
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x59ade993fa0c71ebe315bcae1805b2754eddf432c1cbbafa6faa79dc40ba5ce9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x59ade993fa0c71ebe315bcae1805b2754eddf432c1cbbafa6faa79dc40ba5ce9","name":"Yonezawa Sumitomo","registered_at":"2026-06-12T12:08:38Z","symbol":"NIM0293337","token_address":"0x1f75b30b1d992cd8b3f26a347f078849dc1893a1","type":"artist","uuid":"e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f"}
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 0x59ade993fa0c71ebe315bcae1805b2754eddf432c1cbbafa6faa79dc40ba5ce9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f.json and https://artists.proofprofile.net/proofs/artist/e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x59ade993fa0c71ebe315bcae1805b2754eddf432c1cbbafa6faa79dc40ba5ce9","name":"Yonezawa Sumitomo","registered_at":"2026-06-12T12:08:38Z","symbol":"NIM0293337","token_address":"0x1f75b30b1d992cd8b3f26a347f078849dc1893a1","type":"artist","uuid":"e3b33cc7-b4c9-4cb5-99a5-87c9bc37ed3f"}
album: 米沢進
  type: MusicAlbum
  date published: 2017-04-03
album: ET Has Landed
  type: MusicAlbum
  date published: 2021-04-19
  track: ET Has Landed
    type: MusicRecording
    duration: PT1M39S
    duration ms: 99567
    explicit: false
    by artist: Yonezawa Sumitomo
    in album: ET Has Landed
      type: MusicAlbum
      date published: 2021-04-19
    genre: lullaby
    isrc code: SE5IB2108551
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:12:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xee28119e52ec804c277adc052120dd0e829d0ab858286998582a3880faba5afd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2108551
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xee28119e52ec804c277adc052120dd0e829d0ab858286998582a3880faba5afd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE5IB2108551.
      date published: 2026-07-04T10:04:33Z
    audio: ET Has Landed
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.051
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.857
      additional property: Energy
        type: PropertyValue
        value: 0.059
      additional property: Speechiness
        type: PropertyValue
        value: 0.096
      additional property: Acousticness
        type: PropertyValue
        value: 0.956
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.885
      additional property: Liveness
        type: PropertyValue
        value: 0.068
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.243
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.953
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Three Angels
  type: MusicAlbum
  date published: 2021-04-26
album: Claire de Lune
  type: MusicAlbum
  date published: 2021-08-30
album: La Valse de la Lune
  type: MusicAlbum
  date published: 2022-03-07
album: One Finger One Thumb
  type: MusicAlbum
  date published: 2022-12-27