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 0xb8067dc515c51dad1e653fcb5b84caa627567572273cfa38bab7b11c5a08086e. 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/ee0775a3-8c26-43b2-b939-0829b821f7c1.json and https://artists.proofprofile.net/proofs/artist/ee0775a3-8c26-43b2-b939-0829b821f7c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Riding the Range - The songs of Townes Van Zandt
Singing Through the Wall. Songs for Western Sahara, Vol. 2