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 0x4715896de1f486a7f43cc30ce1978b45b9f8b6c1b5e615ed80a3c5a22e302537. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f86bb3f-5aa2-40b7-8f9c-2734e957395e.json and https://artists.proofprofile.net/proofs/artist/0f86bb3f-5aa2-40b7-8f9c-2734e957395e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Indo-Arabic Variations (feat. Magid Khan)