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 0x4a339cf535060cfffcbaa0e6e792676b2cd9a16143485d0720de16040d594aa3. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58cc45d7-bceb-41f3-ae02-5e3a21f323d4.json and https://artists.proofprofile.net/proofs/artist/58cc45d7-bceb-41f3-ae02-5e3a21f323d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Knife Face 2 the "I Will Kill You" Mixtape