季楽
type: MusicGroup
genre: j-rock
popularity: 2
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6963437d58a7262b7e0acd24874636d43abbb2ea677b1ad4a377f327177daba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6197be04-b3c6-46ca-bb75-d4785f6c39b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6197be04-b3c6-46ca-bb75-d4785f6c39b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6197be04-b3c6-46ca-bb75-d4785f6c39b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd6963437d58a7262b7e0acd24874636d43abbb2ea677b1ad4a377f327177daba","name":"季楽","registered_at":"2026-06-17T00:01:19Z","symbol":"NIM1217371","token_address":"0xe87ffdcc1098b83aa4087e5aa9a050b7ad95c7aa","type":"artist","uuid":"6197be04-b3c6-46ca-bb75-d4785f6c39b0"}
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 0xd6963437d58a7262b7e0acd24874636d43abbb2ea677b1ad4a377f327177daba. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6197be04-b3c6-46ca-bb75-d4785f6c39b0.json and https://artists.proofprofile.net/proofs/artist/6197be04-b3c6-46ca-bb75-d4785f6c39b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xd6963437d58a7262b7e0acd24874636d43abbb2ea677b1ad4a377f327177daba","name":"季楽","registered_at":"2026-06-17T00:01:19Z","symbol":"NIM1217371","token_address":"0xe87ffdcc1098b83aa4087e5aa9a050b7ad95c7aa","type":"artist","uuid":"6197be04-b3c6-46ca-bb75-d4785f6c39b0"}
album: REVIVE
  type: MusicAlbum
  date published: 2024-10-16
album: 全部この国のせいだろう
  type: MusicAlbum
  date published: 2024-12-25
album: ブルーシート
  type: MusicAlbum
  date published: 2025-02-12
album: 花蝶風月
  type: MusicAlbum
  date published: 2025-04-16
album: 未成年
  type: MusicAlbum
  date published: 2025-06-11
  track: 未成年
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233683
    explicit: false
    by artist: 季楽
    in album: 未成年
      type: MusicAlbum
      date published: 2025-06-11
    genre: j-rock
    isrc code: TCJPI2543067
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T03:09:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8f3b3442a16fa5fed6002edb1882d7bc51e5877175123fde08a5e61a4e3a6b0a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958812
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958812
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPI2543067
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T03:24:09Z
    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 0x8f3b3442a16fa5fed6002edb1882d7bc51e5877175123fde08a5e61a4e3a6b0a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPI2543067.
      date published: 2026-07-20T03:24:09Z
    audio: 未成年
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.072
      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: 0.441
      additional property: Energy
        type: PropertyValue
        value: 0.946
      additional property: Speechiness
        type: PropertyValue
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0.005
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.322
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.271
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.027
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 何者
  type: MusicAlbum
  date published: 2025-07-25