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 0x7780aa17ab15c4d3b32f3e386c4e295a5bead2b5a22b10cd5b41c343a57b0a9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d84b446b-a5d4-4e7a-bfaa-c5a21b88c70d.json and https://artists.proofprofile.net/proofs/artist/d84b446b-a5d4-4e7a-bfaa-c5a21b88c70d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boomerang (Expanded Edition) (feat. Mark Stein)
Brother's Comin' Home (feat. Mark Stein)