Brian Wesley Campbell (born May 23, 1979) is a Canadian former professional ice hockey defenceman. He played for the Buffalo Sabres, San Jose Sharks, Chicago Blackhawks and Florida Panthers of the Nat
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c79f051326a756e7c845aa53dd4f090e68f8b7869206108fdc03112dbd2a1. 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/ded70ad9-bd3d-416c-95ec-4ad8e766e249.json and https://artists.proofprofile.net/proofs/artist/ded70ad9-bd3d-416c-95ec-4ad8e766e249.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).