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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549d11784b0fdd1d4d5c79c5c87191db560bdcb0e6d202beaa1cfc898a8e558b. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/293a35fc-af95-4c40-aba8-0d1d4d51fa8b.json and https://artists.proofprofile.net/proofs/artist/293a35fc-af95-4c40-aba8-0d1d4d51fa8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Party Megamix Ultimate Edition 2025, Vol. 2