Clif Norrell is an American record producer, recording engineer, music mixer, and musician. He has worked with many prominent artists including Bruce Springsteen, R.E.M., Jeff Buckley, No Doubt, Rush,
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb11be44d210bf10db058d3e77fed6bcfcebcd7e6b9a5b91ad20a46b45582f1. 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/616e3da2-5b67-4074-9633-4c022dd02121.json and https://artists.proofprofile.net/proofs/artist/616e3da2-5b67-4074-9633-4c022dd02121.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).