thumb|Pud Brown funeral photo Albert Francis "Pud" Brown (January 22, 1917, Wilmington, Delaware - May 27, 1996, Algiers, Louisiana) was an American jazz reed player. Though he was born in Delaware,
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 0x376145e5008a5f45326144a1a32d289a9e25ed86128b2f39fbb31663663a481a. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ff1b347-3602-42b6-9ce0-8f4e311ab120.json and https://artists.proofprofile.net/proofs/artist/2ff1b347-3602-42b6-9ce0-8f4e311ab120.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).