Norum is a surname. Notable people with the surname include: John Norum (born 1964), Swedish hard rock guitarist of Norwegian background Kaare R. Norum (1932–2019), Norwegian physician and professor
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 0xee9566e7badf0c0c953999dc1ad5742a949f5f4bdc36d41bb6209efb11e608e0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63fd7721-cce6-4f6f-982e-7aeff4d7cb21.json and https://artists.proofprofile.net/proofs/artist/63fd7721-cce6-4f6f-982e-7aeff4d7cb21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).