John Keyn
type: MusicGroup
genre: hyperpop
popularity: 9
followers: 200
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7a06df6069fc0c296ddb856cf938ed098d2221a9a7aa093c8c02bbd8c1a440a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953958
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953958
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2682cfa0-7469-482f-8c32-1d78aa407aa1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2682cfa0-7469-482f-8c32-1d78aa407aa1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2682cfa0-7469-482f-8c32-1d78aa407aa1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:52:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7a06df6069fc0c296ddb856cf938ed098d2221a9a7aa093c8c02bbd8c1a440a","name":"John Keyn","registered_at":"2026-06-16T03:14:51Z","symbol":"NIM0919909","token_address":"0x1d5fcdebde4f5bd700b0fb5c4efa1668f686d3c4","type":"artist","uuid":"2682cfa0-7469-482f-8c32-1d78aa407aa1"}
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 0xb7a06df6069fc0c296ddb856cf938ed098d2221a9a7aa093c8c02bbd8c1a440a. Chain 2 (Bitcoin): anchored in block 953959 (2026-06-16T14:51:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2682cfa0-7469-482f-8c32-1d78aa407aa1.json and https://artists.proofprofile.net/proofs/artist/2682cfa0-7469-482f-8c32-1d78aa407aa1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:51:55Z
  text: {"copyright_id":"0xb7a06df6069fc0c296ddb856cf938ed098d2221a9a7aa093c8c02bbd8c1a440a","name":"John Keyn","registered_at":"2026-06-16T03:14:51Z","symbol":"NIM0919909","token_address":"0x1d5fcdebde4f5bd700b0fb5c4efa1668f686d3c4","type":"artist","uuid":"2682cfa0-7469-482f-8c32-1d78aa407aa1"}
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