やまだはなこ
type: MusicGroup
genre: hyperpop
popularity: 23
followers: 2460
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xecf792c73f31f956fa7e909c85e5fc27b857e2adb17e2d7a6df7d4009f704762
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61274540-48aa-40bf-81b5-e4b60ca47536.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61274540-48aa-40bf-81b5-e4b60ca47536.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/61274540-48aa-40bf-81b5-e4b60ca47536
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xecf792c73f31f956fa7e909c85e5fc27b857e2adb17e2d7a6df7d4009f704762","name":"やまだはなこ","registered_at":"2026-06-11T22:49:35Z","symbol":"NIM0127135","token_address":"0xc46156c22188b0ccc3eaf6efa64e278232f68648","type":"artist","uuid":"61274540-48aa-40bf-81b5-e4b60ca47536"}
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 0xecf792c73f31f956fa7e909c85e5fc27b857e2adb17e2d7a6df7d4009f704762. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61274540-48aa-40bf-81b5-e4b60ca47536.json and https://artists.proofprofile.net/proofs/artist/61274540-48aa-40bf-81b5-e4b60ca47536.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xecf792c73f31f956fa7e909c85e5fc27b857e2adb17e2d7a6df7d4009f704762","name":"やまだはなこ","registered_at":"2026-06-11T22:49:35Z","symbol":"NIM0127135","token_address":"0xc46156c22188b0ccc3eaf6efa64e278232f68648","type":"artist","uuid":"61274540-48aa-40bf-81b5-e4b60ca47536"}
album: I
  type: MusicAlbum
  date published: 2021-08-25
album: Envy!!!
  type: MusicAlbum
  date published: 2021-09-08
album: I'm5
  type: MusicAlbum
  date published: 2021-09-22
album: 4gone
  type: MusicAlbum
  date published: 2021-10-06