1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99bfcacfe0add131f1078d77361cfd100c282d3089e18a7ae68945b25b91f78. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef4c9025-8ae4-4972-9798-fb3cdb924ab3.json and https://artists.proofprofile.net/proofs/artist/ef4c9025-8ae4-4972-9798-fb3cdb924ab3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Birmingham Crew (feat. Letisha Gordon & Mowgli)
Back Against the Wall (feat. Youssef Ashraf)