Leo Black
type: MusicGroup
genre: dubstep
genre: riddim
popularity: 3
followers: 9806
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80f47712c252c8ae4c5e7897ae20e7096e196693a25b5fc9ea180abc3930f061
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8f7f740-b3e1-4927-8603-ac39d34986f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8f7f740-b3e1-4927-8603-ac39d34986f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8f7f740-b3e1-4927-8603-ac39d34986f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x80f47712c252c8ae4c5e7897ae20e7096e196693a25b5fc9ea180abc3930f061","name":"Leo Black","registered_at":"2026-06-20T08:58:44Z","symbol":"NIM1572119","token_address":"0xb5186b3deac8428c112ae2e31dad595e1b139ac4","type":"artist","uuid":"a8f7f740-b3e1-4927-8603-ac39d34986f0"}
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 0x80f47712c252c8ae4c5e7897ae20e7096e196693a25b5fc9ea180abc3930f061. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8f7f740-b3e1-4927-8603-ac39d34986f0.json and https://artists.proofprofile.net/proofs/artist/a8f7f740-b3e1-4927-8603-ac39d34986f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x80f47712c252c8ae4c5e7897ae20e7096e196693a25b5fc9ea180abc3930f061","name":"Leo Black","registered_at":"2026-06-20T08:58:44Z","symbol":"NIM1572119","token_address":"0xb5186b3deac8428c112ae2e31dad595e1b139ac4","type":"artist","uuid":"a8f7f740-b3e1-4927-8603-ac39d34986f0"}
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