猫を堕ろす
type: MusicGroup
genre: japanese indie
genre: shibuya-kei
popularity: 6
followers: 2012
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce5fb065cc18986bd912bb2f5b79ba06f1b5ce0793f919b3a7d6708c3ee90475
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f6519c4-1172-4100-819e-2466668f2885.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f6519c4-1172-4100-819e-2466668f2885.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f6519c4-1172-4100-819e-2466668f2885
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce5fb065cc18986bd912bb2f5b79ba06f1b5ce0793f919b3a7d6708c3ee90475","name":"猫を堕ろす","registered_at":"2026-06-16T11:39:45Z","symbol":"NIM1040452","token_address":"0x86ad9561dd456b2a6bc8b38052f6f5c0f8e3ba08","type":"artist","uuid":"3f6519c4-1172-4100-819e-2466668f2885"}
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 0xce5fb065cc18986bd912bb2f5b79ba06f1b5ce0793f919b3a7d6708c3ee90475. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f6519c4-1172-4100-819e-2466668f2885.json and https://artists.proofprofile.net/proofs/artist/3f6519c4-1172-4100-819e-2466668f2885.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xce5fb065cc18986bd912bb2f5b79ba06f1b5ce0793f919b3a7d6708c3ee90475","name":"猫を堕ろす","registered_at":"2026-06-16T11:39:45Z","symbol":"NIM1040452","token_address":"0x86ad9561dd456b2a6bc8b38052f6f5c0f8e3ba08","type":"artist","uuid":"3f6519c4-1172-4100-819e-2466668f2885"}
album: The Cats Are Alright
  type: MusicAlbum
  date published: 2017-05-07
album: サウンド・リクルーティング ONLINE
  type: MusicAlbum
  date published: 2019-05-17
  track: シナプス
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175588
    explicit: false
    by artist: 猫を堕ろす
    in album: サウンド・リクルーティング ONLINE
      type: MusicAlbum
      date published: 2019-05-17
    genre: japanese indie
    genre: shibuya-kei
    isrc code: TCJPJ1904271
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T11:57:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xce92322f83ed503ee236ed37d36ef17794d9888aab80d6c24826c00c1a289056
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959128
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959128
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1904271
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T12:33:25Z
    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 0xce92322f83ed503ee236ed37d36ef17794d9888aab80d6c24826c00c1a289056. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCJPJ1904271.
      date published: 2026-07-22T12:33:25Z
    audio: シナプス
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.032
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.689
      additional property: Energy
        type: PropertyValue
        value: 0.711
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.066
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.346
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.826
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.504
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 宇宙・裏切り・怒り・ときめき
  type: MusicAlbum
  date published: 2020-01-16
album: CLOUD ALBUM
  type: MusicAlbum
  date published: 2021-10-13
album: 宇宙・裏切り・怒り・ときめき 2
  type: MusicAlbum
  date published: 2022-05-01
album: ポップの真髄
  type: MusicAlbum
  date published: 2024-02-07