A sloppy joe is a sandwich consisting of ground meat (typically beef), onions, tomato sauce or ketchup, Worcestershire sauce, and other seasonings served on a hamburger bun.Ingram, Gaye G., Labensky,
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 0x3d74b9adfd7ccb8c008156e4865d816f7b4554aad8693f890bab8add8f6cdacd. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15211573-4789-49c4-b6c2-ad9399b54584.json and https://artists.proofprofile.net/proofs/artist/15211573-4789-49c4-b6c2-ad9399b54584.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).