大北哲央
type: MusicGroup
popularity: 2
followers: 114
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f9ab88764ca77f712bdb26264fba3ae1ec77e36b8e580490579360a3c0d86b9
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/de1eab13-b8cc-4398-9125-e3bb4a396871.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de1eab13-b8cc-4398-9125-e3bb4a396871.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de1eab13-b8cc-4398-9125-e3bb4a396871
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4f9ab88764ca77f712bdb26264fba3ae1ec77e36b8e580490579360a3c0d86b9","name":"大北哲央","registered_at":"2026-06-21T05:41:36Z","symbol":"NIM1836705","token_address":"0x22c9e48ad66b0f23b47bbde095fcd7096319a869","type":"artist","uuid":"de1eab13-b8cc-4398-9125-e3bb4a396871"}
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 0x4f9ab88764ca77f712bdb26264fba3ae1ec77e36b8e580490579360a3c0d86b9. 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/de1eab13-b8cc-4398-9125-e3bb4a396871.json and https://artists.proofprofile.net/proofs/artist/de1eab13-b8cc-4398-9125-e3bb4a396871.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4f9ab88764ca77f712bdb26264fba3ae1ec77e36b8e580490579360a3c0d86b9","name":"大北哲央","registered_at":"2026-06-21T05:41:36Z","symbol":"NIM1836705","token_address":"0x22c9e48ad66b0f23b47bbde095fcd7096319a869","type":"artist","uuid":"de1eab13-b8cc-4398-9125-e3bb4a396871"}
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  type: MusicAlbum
  date published: 2020-06-05
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