長田幸子
type: MusicGroup
popularity: 3
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde751d2abe12f620ee55012ccb47a0c50b525eb9e027133d3857bccc0d0e6504
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xde751d2abe12f620ee55012ccb47a0c50b525eb9e027133d3857bccc0d0e6504","name":"長田幸子","registered_at":"2026-06-16T17:03:53Z","symbol":"NIM1117775","token_address":"0x7c371876fa70bdbd028fe5cec21e94c9475a1a94","type":"artist","uuid":"4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5"}
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 0xde751d2abe12f620ee55012ccb47a0c50b525eb9e027133d3857bccc0d0e6504. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5.json and https://artists.proofprofile.net/proofs/artist/4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xde751d2abe12f620ee55012ccb47a0c50b525eb9e027133d3857bccc0d0e6504","name":"長田幸子","registered_at":"2026-06-16T17:03:53Z","symbol":"NIM1117775","token_address":"0x7c371876fa70bdbd028fe5cec21e94c9475a1a94","type":"artist","uuid":"4ef3b7fe-4169-4adf-8e3a-af7e5224dcc5"}