マキシウキョウ
type: MusicGroup
genre: vocaloid
popularity: 20
followers: 869
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3dd39d7e551a3712981d2fc0d7a138f97fede46410c887f212948b1cb5e96961
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953599
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953599
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d35295c-5c0d-48ec-8cdf-4147dc92007a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d35295c-5c0d-48ec-8cdf-4147dc92007a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0d35295c-5c0d-48ec-8cdf-4147dc92007a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:43:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3dd39d7e551a3712981d2fc0d7a138f97fede46410c887f212948b1cb5e96961","name":"マキシウキョウ","registered_at":"2026-06-14T05:51:29Z","symbol":"NIM0358364","token_address":"0x159f91041e4b86e83eae666590682d5210265b09","type":"artist","uuid":"0d35295c-5c0d-48ec-8cdf-4147dc92007a"}
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 0x3dd39d7e551a3712981d2fc0d7a138f97fede46410c887f212948b1cb5e96961. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d35295c-5c0d-48ec-8cdf-4147dc92007a.json and https://artists.proofprofile.net/proofs/artist/0d35295c-5c0d-48ec-8cdf-4147dc92007a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:43:55Z
  text: {"copyright_id":"0x3dd39d7e551a3712981d2fc0d7a138f97fede46410c887f212948b1cb5e96961","name":"マキシウキョウ","registered_at":"2026-06-14T05:51:29Z","symbol":"NIM0358364","token_address":"0x159f91041e4b86e83eae666590682d5210265b09","type":"artist","uuid":"0d35295c-5c0d-48ec-8cdf-4147dc92007a"}
album: Dattesa
  type: MusicAlbum
  date published: 2024-05-13
  track: Dattesa
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203100
    explicit: false
    by artist: マキシウキョウ
    in album: Dattesa
      type: MusicAlbum
      date published: 2024-05-13
    isrc code: JP92U2400361
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-12T01:11:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4f99cb630391f5dd6b55c1d5a3ad9666a89ffcfb5d19b8550440f12fcc2166d4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92U2400361
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 0x4f99cb630391f5dd6b55c1d5a3ad9666a89ffcfb5d19b8550440f12fcc2166d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92U2400361.
      date published: 2026-06-13T13:32:09Z
    audio: Dattesa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.018
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.806
      additional property: Energy
        type: PropertyValue
        value: 0.737
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.196
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.08
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.888
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.364
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Kasane Teto's feltagoon
  type: MusicAlbum
  date published: 2024-02-22
  track: Kasane Teto's feltagoon
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245885
    explicit: false
    by artist: マキシウキョウ
    in album: Kasane Teto's feltagoon
      type: MusicAlbum
      date published: 2024-02-22
    isrc code: JP92U2400182
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-21T17:16:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xadb41dcd9594a95d82d17bc6c189752768b2e1a6b6379b4a3f46943d7961ecb3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956302
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956302
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92U2400182
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:30:09Z
    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 0xadb41dcd9594a95d82d17bc6c189752768b2e1a6b6379b4a3f46943d7961ecb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JP92U2400182.
      date published: 2026-07-02T03:30:09Z
    audio: Kasane Teto's feltagoon
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.13
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.718
      additional property: Energy
        type: PropertyValue
        value: 0.76
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.031
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.13
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.708

Loudness (dB)
type: PropertyValue
value: -12.162

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major