Bruce R. Gaitsch ( ; born February 7, 1953) is an American guitarist, composer, and producer. He is best known for working with notable bands and musicians such as Chicago, Peter Cetera, Richard Marx,
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 0x8df1048b5eed9edc1a6f9abacb412658f8b132c60a036721a961b8c6d94d544a. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/171a496c-01e6-4ae7-b67a-3224cdbb2ec6.json and https://artists.proofprofile.net/proofs/artist/171a496c-01e6-4ae7-b67a-3224cdbb2ec6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).