宮城武碩
type: MusicGroup
popularity: 3
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0caa24aab0fcb8a9126ba7a414d2b64bb5b1f8f44a0acec45a7f2b8a43a606b
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/b564c844-6dca-484a-a44d-e9e4778822b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b564c844-6dca-484a-a44d-e9e4778822b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b564c844-6dca-484a-a44d-e9e4778822b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd0caa24aab0fcb8a9126ba7a414d2b64bb5b1f8f44a0acec45a7f2b8a43a606b","name":"宮城武碩","registered_at":"2026-06-20T15:02:47Z","symbol":"NIM1635855","token_address":"0x3dacd99216a70f05626ba6ee87f9ea5e0e8c90a4","type":"artist","uuid":"b564c844-6dca-484a-a44d-e9e4778822b4"}
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 0xd0caa24aab0fcb8a9126ba7a414d2b64bb5b1f8f44a0acec45a7f2b8a43a606b. 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/b564c844-6dca-484a-a44d-e9e4778822b4.json and https://artists.proofprofile.net/proofs/artist/b564c844-6dca-484a-a44d-e9e4778822b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd0caa24aab0fcb8a9126ba7a414d2b64bb5b1f8f44a0acec45a7f2b8a43a606b","name":"宮城武碩","registered_at":"2026-06-20T15:02:47Z","symbol":"NIM1635855","token_address":"0x3dacd99216a70f05626ba6ee87f9ea5e0e8c90a4","type":"artist","uuid":"b564c844-6dca-484a-a44d-e9e4778822b4"}
album: 沖縄の民謡 MINYO OF OKINAWA TAKEHIRO MIYAGI
  type: MusicAlbum
  date published: 2003-04-02