宮城島 麻未
type: MusicGroup
popularity: 2
followers: 110
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7713eeac415710da9f0b3804bae9ae1290be51f46ca8a28185197034177950e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cdeb880-ce59-49ca-9e1b-45628f6031b3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cdeb880-ce59-49ca-9e1b-45628f6031b3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3cdeb880-ce59-49ca-9e1b-45628f6031b3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf7713eeac415710da9f0b3804bae9ae1290be51f46ca8a28185197034177950e","name":"宮城島 麻未","registered_at":"2026-06-16T10:45:26Z","symbol":"NIM1027492","token_address":"0xe8302885717a3092de6941237e1acc0fff356d0f","type":"artist","uuid":"3cdeb880-ce59-49ca-9e1b-45628f6031b3"}
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 0xf7713eeac415710da9f0b3804bae9ae1290be51f46ca8a28185197034177950e. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cdeb880-ce59-49ca-9e1b-45628f6031b3.json and https://artists.proofprofile.net/proofs/artist/3cdeb880-ce59-49ca-9e1b-45628f6031b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T02:39:28Z
  text: {"copyright_id":"0xf7713eeac415710da9f0b3804bae9ae1290be51f46ca8a28185197034177950e","name":"宮城島 麻未","registered_at":"2026-06-16T10:45:26Z","symbol":"NIM1027492","token_address":"0xe8302885717a3092de6941237e1acc0fff356d0f","type":"artist","uuid":"3cdeb880-ce59-49ca-9e1b-45628f6031b3"}
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