古谷野とも子
type: MusicGroup
genre: city pop
genre: j-r&b
genre: kayokyoku
popularity: 2
followers: 65
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2119f8283a4b643b5f98760041116021afdf3899d180322d36f647d795dc53e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afc3d2fd-7a68-4f46-b2fb-291afe987ec9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afc3d2fd-7a68-4f46-b2fb-291afe987ec9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/afc3d2fd-7a68-4f46-b2fb-291afe987ec9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2119f8283a4b643b5f98760041116021afdf3899d180322d36f647d795dc53e7","name":"古谷野とも子","registered_at":"2026-06-20T12:07:00Z","symbol":"NIM1608153","token_address":"0xb79515657df9744647830f03acf87fceb5066a1f","type":"artist","uuid":"afc3d2fd-7a68-4f46-b2fb-291afe987ec9"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2119f8283a4b643b5f98760041116021afdf3899d180322d36f647d795dc53e7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afc3d2fd-7a68-4f46-b2fb-291afe987ec9.json and https://artists.proofprofile.net/proofs/artist/afc3d2fd-7a68-4f46-b2fb-291afe987ec9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x2119f8283a4b643b5f98760041116021afdf3899d180322d36f647d795dc53e7","name":"古谷野とも子","registered_at":"2026-06-20T12:07:00Z","symbol":"NIM1608153","token_address":"0xb79515657df9744647830f03acf87fceb5066a1f","type":"artist","uuid":"afc3d2fd-7a68-4f46-b2fb-291afe987ec9"}
album: しあわせ/よみがえる想い出
  type: MusicAlbum
  date published: 1975-04-25
album: 海の悲歌/愛はゆれている
  type: MusicAlbum
  date published: 1975-09-21
album: メモリー 古谷野とも子ファースト
  type: MusicAlbum
  date published: 1975-11-05
album: 一通の手紙/東京暮らし
  type: MusicAlbum
  date published: 1975-11-21
album: 風は東から/わらべ唄
  type: MusicAlbum
  date published: 1976-02-21
album: 青春の片隅で 古谷野とも子Ⅱ
  type: MusicAlbum
  date published: 1976-10-05
album: NEUTRAL TINTS
  type: MusicAlbum
  date published: 1978-05-05
album: FROM INSIDE
  type: MusicAlbum
  date published: 1979-03-21