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 0xc119f8662a3edc52e5c98a1e9e3f1d117ad2429c181fd474ce4d4aeea523505c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcb7bcbc-799c-441c-99b7-2e8da5a75b79.json and https://artists.proofprofile.net/proofs/artist/bcb7bcbc-799c-441c-99b7-2e8da5a75b79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tonight You Belong to Me - Home recording
Razzia vol 1 - There's A Razzia Going On