ユメカウツツカ
type: MusicGroup
popularity: 8
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f8474ceffb7350f6372197dbacd0b102108fb2fe5cbe3c61d9a947f75b1be36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/858e32cb-53c1-4fc3-ab16-f123893c8f5e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/858e32cb-53c1-4fc3-ab16-f123893c8f5e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/858e32cb-53c1-4fc3-ab16-f123893c8f5e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2f8474ceffb7350f6372197dbacd0b102108fb2fe5cbe3c61d9a947f75b1be36","name":"ユメカウツツカ","registered_at":"2026-06-17T12:10:05Z","symbol":"NIM1391199","token_address":"0xca2a9acf0c1ab8f1383f01c5037f980ca9f2ff15","type":"artist","uuid":"858e32cb-53c1-4fc3-ab16-f123893c8f5e"}
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 0x2f8474ceffb7350f6372197dbacd0b102108fb2fe5cbe3c61d9a947f75b1be36. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/858e32cb-53c1-4fc3-ab16-f123893c8f5e.json and https://artists.proofprofile.net/proofs/artist/858e32cb-53c1-4fc3-ab16-f123893c8f5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x2f8474ceffb7350f6372197dbacd0b102108fb2fe5cbe3c61d9a947f75b1be36","name":"ユメカウツツカ","registered_at":"2026-06-17T12:10:05Z","symbol":"NIM1391199","token_address":"0xca2a9acf0c1ab8f1383f01c5037f980ca9f2ff15","type":"artist","uuid":"858e32cb-53c1-4fc3-ab16-f123893c8f5e"}
album: 永劫ディストラクション
  type: MusicAlbum
  date published: 2025-02-17
album: カルト
  type: MusicAlbum
  date published: 2025-03-20
  track: カルト
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200425
    explicit: false
    by artist: ユメカウツツカ
    in album: カルト
      type: MusicAlbum
      date published: 2025-03-20
    isrc code: TCJPE2582054
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T00:10:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a04204747f92ef29e9c46f042789da29bc6ebd3be95faea4b4b26acc6f9552c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958800
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958800
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPE2582054
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T00:52:19Z
    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 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 0x7a04204747f92ef29e9c46f042789da29bc6ebd3be95faea4b4b26acc6f9552c. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TCJPE2582054.
      date published: 2026-07-20T00:52:19Z
    audio: カルト
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.01
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.441
      additional property: Energy
        type: PropertyValue
        value: 0.971
      additional property: Speechiness
        type: PropertyValue
        value: 0.134
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.316
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.743
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: サヨナラカタストロフィ
  type: MusicAlbum
  date published: 2025-03-20
album: 残響スクリーム
  type: MusicAlbum
  date published: 2025-03-20
album: 色想レジデュアル
  type: MusicAlbum
  date published: 2025-03-20
album: 憂雪モダンガール
  type: MusicAlbum
  date published: 2025-04-24
album: ネバーエンド
  type: MusicAlbum
  date published: 2025-05-22
album: 泡沫ノユートピア
  type: MusicAlbum
  date published: 2025-06-18
album: アマガミ
  type: MusicAlbum
  date published: 2025-07-02
album: 猟奇的アフェクション
  type: MusicAlbum
  date published: 2025-09-12