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 0x0e9d936ee2cbbae1f93ed4bcf378b7e166fb202ea95602d32bfb9975a1e81e01. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/467fe768-77ed-4a1f-9c2b-f9c37ab15ef9.json and https://artists.proofprofile.net/proofs/artist/467fe768-77ed-4a1f-9c2b-f9c37ab15ef9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Too Blues to Be Punk, Too Punk to Be Blues
10 Years Burning Ears (Live at Mardi Gras)