羽山晃生
type: MusicGroup
genre: choral
popularity: 21
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb20434eac0b4e8f663f613541c9db8558ded15e2a1f351d0f80a87753a8a798
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/b7be8811-c9b9-43f9-8388-cb2dbff6c658.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7be8811-c9b9-43f9-8388-cb2dbff6c658.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7be8811-c9b9-43f9-8388-cb2dbff6c658
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb20434eac0b4e8f663f613541c9db8558ded15e2a1f351d0f80a87753a8a798","name":"羽山晃生","registered_at":"2026-06-12T08:01:49Z","symbol":"NIM0236030","token_address":"0x9b423c2ceeb916f79b1eff9d5144f9eaca9e42b6","type":"artist","uuid":"b7be8811-c9b9-43f9-8388-cb2dbff6c658"}
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 0xbb20434eac0b4e8f663f613541c9db8558ded15e2a1f351d0f80a87753a8a798. 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/b7be8811-c9b9-43f9-8388-cb2dbff6c658.json and https://artists.proofprofile.net/proofs/artist/b7be8811-c9b9-43f9-8388-cb2dbff6c658.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbb20434eac0b4e8f663f613541c9db8558ded15e2a1f351d0f80a87753a8a798","name":"羽山晃生","registered_at":"2026-06-12T08:01:49Z","symbol":"NIM0236030","token_address":"0x9b423c2ceeb916f79b1eff9d5144f9eaca9e42b6","type":"artist","uuid":"b7be8811-c9b9-43f9-8388-cb2dbff6c658"}