Bill Welsh (April 25, 1911 – February 27, 2000) was an American radio and television announcer. Early years Welsh born in Greeley, Colorado, the son of Mr. and Mrs. W.H. Welsh. He attended the Color
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 0x9fdee9f18671f7f18dc29dca6e03367f7e3647ec98ea83a7b821cbd6a7df86ee. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b195efd7-59e1-4fd8-8822-fe39dfc63e1c.json and https://artists.proofprofile.net/proofs/artist/b195efd7-59e1-4fd8-8822-fe39dfc63e1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).