川村静香
type: MusicGroup
popularity: 4
followers: 204
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6437cf4680d5bf08dfb216662db67123ea2a0d59363b541763ae9988f3d35848
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/5b824ff8-c1aa-45de-92dd-ad8358a44bfd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b824ff8-c1aa-45de-92dd-ad8358a44bfd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b824ff8-c1aa-45de-92dd-ad8358a44bfd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6437cf4680d5bf08dfb216662db67123ea2a0d59363b541763ae9988f3d35848","name":"川村静香","registered_at":"2026-06-16T21:31:33Z","symbol":"NIM1181654","token_address":"0x3660b57bcf3a3254e42509acd5bbb8b071e1a734","type":"artist","uuid":"5b824ff8-c1aa-45de-92dd-ad8358a44bfd"}
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 0x6437cf4680d5bf08dfb216662db67123ea2a0d59363b541763ae9988f3d35848. 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/5b824ff8-c1aa-45de-92dd-ad8358a44bfd.json and https://artists.proofprofile.net/proofs/artist/5b824ff8-c1aa-45de-92dd-ad8358a44bfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x6437cf4680d5bf08dfb216662db67123ea2a0d59363b541763ae9988f3d35848","name":"川村静香","registered_at":"2026-06-16T21:31:33Z","symbol":"NIM1181654","token_address":"0x3660b57bcf3a3254e42509acd5bbb8b071e1a734","type":"artist","uuid":"5b824ff8-c1aa-45de-92dd-ad8358a44bfd"}
album: ごめんよ
  type: MusicAlbum
  date published: 2021-06-25
album: 無心
  type: MusicAlbum
  date published: 2021-06-25
album: クワガタのまどかさん
  type: MusicAlbum
  date published: 2021-08-30
album: 老人の手
  type: MusicAlbum
  date published: 2023-03-23
album: クワガタのまどかさん
  type: MusicAlbum
  date published: 2025-05-03