The Canadian Sweethearts, sometimes known as Bob & Lucille, were a Canadian singing duo who were popular during the 1960s, disbanding in 1977. The duo consisted of vocalist Lucille Starr and her guita
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 0xdb48af372feaf453ca743e2d99c174585ed1a852105bf96351b34520a62486fc. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/431e5c32-6ed2-44b9-b929-11ba4acd4734.json and https://artists.proofprofile.net/proofs/artist/431e5c32-6ed2-44b9-b929-11ba4acd4734.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Side By Side / Pop & Country (Expanded Edition)