忍成 司（CV：山下大輝）
type: MusicGroup
popularity: 5
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20f653303b2dc3ea1ff0b18d72413f3201b40634b6b0d4515e5c1efafbc8904f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f66f9a5e-e73e-4c9a-9335-f6605d16f1ff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f66f9a5e-e73e-4c9a-9335-f6605d16f1ff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f66f9a5e-e73e-4c9a-9335-f6605d16f1ff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x20f653303b2dc3ea1ff0b18d72413f3201b40634b6b0d4515e5c1efafbc8904f","name":"忍成 司（CV：山下大輝）","registered_at":"2026-06-21T18:52:45Z","symbol":"NIM1959389","token_address":"0x5886a85e6da48a609f26db3a3b6e343d2f5f24c1","type":"artist","uuid":"f66f9a5e-e73e-4c9a-9335-f6605d16f1ff"}
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 0x20f653303b2dc3ea1ff0b18d72413f3201b40634b6b0d4515e5c1efafbc8904f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f66f9a5e-e73e-4c9a-9335-f6605d16f1ff.json and https://artists.proofprofile.net/proofs/artist/f66f9a5e-e73e-4c9a-9335-f6605d16f1ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x20f653303b2dc3ea1ff0b18d72413f3201b40634b6b0d4515e5c1efafbc8904f","name":"忍成 司（CV：山下大輝）","registered_at":"2026-06-21T18:52:45Z","symbol":"NIM1959389","token_address":"0x5886a85e6da48a609f26db3a3b6e343d2f5f24c1","type":"artist","uuid":"f66f9a5e-e73e-4c9a-9335-f6605d16f1ff"}