Kenth Thure "Nubben" Norberg (born June 12, 1967) is a retired Swedish professional ice hockey player and head coach. He later became the sports manager of Timrå IK in the Swedish Swedish Elite League
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 0x8472c206aef0785c1180845b3f9e558e41c9766f4814c6becd3175335afd59ca. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10d6a636-4bb5-4012-84df-24d1fce5c88b.json and https://artists.proofprofile.net/proofs/artist/10d6a636-4bb5-4012-84df-24d1fce5c88b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).