Hōsaku
type: MusicGroup
popularity: 14
followers: 1118
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x939fc04071778d80df28e29bbae54a00a88a56b5c67d4caa416b3eb238627918
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953605
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953605
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10b9e75c-9218-4df0-87e6-df8871797adb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10b9e75c-9218-4df0-87e6-df8871797adb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/10b9e75c-9218-4df0-87e6-df8871797adb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:39:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x939fc04071778d80df28e29bbae54a00a88a56b5c67d4caa416b3eb238627918","name":"Hōsaku","registered_at":"2026-06-14T06:11:52Z","symbol":"NIM0363216","token_address":"0xa903b8a4a44b20c65d9fef25ae3b346bfea46037","type":"artist","uuid":"10b9e75c-9218-4df0-87e6-df8871797adb"}
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 0x939fc04071778d80df28e29bbae54a00a88a56b5c67d4caa416b3eb238627918. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10b9e75c-9218-4df0-87e6-df8871797adb.json and https://artists.proofprofile.net/proofs/artist/10b9e75c-9218-4df0-87e6-df8871797adb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T07:39:50Z
  text: {"copyright_id":"0x939fc04071778d80df28e29bbae54a00a88a56b5c67d4caa416b3eb238627918","name":"Hōsaku","registered_at":"2026-06-14T06:11:52Z","symbol":"NIM0363216","token_address":"0xa903b8a4a44b20c65d9fef25ae3b346bfea46037","type":"artist","uuid":"10b9e75c-9218-4df0-87e6-df8871797adb"}
album: アンセム
  type: MusicAlbum
  date published: 2023-09-30
  track: アンセム
    type: MusicRecording
    duration: PT4M23S
    duration ms: 263210
    explicit: false
    by artist: Hōsaku
    in album: アンセム
      type: MusicAlbum
      date published: 2023-09-30
    isrc code: TCJPX2354604
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:47:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1b316773631180185f572a5be75c5adf1e4a3dca630ebeb61f0e17bc284b1ad3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2354604
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x1b316773631180185f572a5be75c5adf1e4a3dca630ebeb61f0e17bc284b1ad3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2354604 — a six-check JSON result.
      date published: 2026-07-05T10:01:46Z
    audio: アンセム
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 189.968
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.373
      additional property: Energy
        type: PropertyValue
        value: 0.908
      additional property: Speechiness
        type: PropertyValue
        value: 0.211
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.233
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.818
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.411
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Anthem
  type: MusicAlbum
  date published: 2023-09-30
album: Swingin‘ High
  type: MusicAlbum
  date published: 2024-01-20
album: Swingin' High
  type: MusicAlbum
  date published: 2024-01-20
album: Huriuma
  type: MusicAlbum
  date published: 2024-09-11
album: Huriuma
  type: MusicAlbum
  date published: 2024-09-11
album: Korekarasa
  type: MusicAlbum
  date published: 2024-10-31
album: これからさ
  type: MusicAlbum
  date published: 2024-10-31
album: アイデアと情熱
  type: MusicAlbum
  date published: 2024-12-27
album: IDEA & PASSION
  type: MusicAlbum
  date published: 2024-12-27
album: 白煙
  type: MusicAlbum
  date published: 2025-03-10
album: White Smoke
  type: MusicAlbum
  date published: 2025-03-10
album: It Might Be
  type: MusicAlbum
  date published: 2025-04-01
album: イットマイト
  type: MusicAlbum
  date published: 2025-04-01
album: 波色の街で
  type: MusicAlbum
  date published: 2025-08-05
album: Namiiro
  type: MusicAlbum
  date published: 2025-08-05
album: Although Summer Goes
  type: MusicAlbum
  date published: 2025-08-31
album: 夏は過ぎるが
  type: MusicAlbum
  date published: 2025-08-31