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 0x48adb14b539e23412dc3465cce931c2ed37da6c60f58ea0dba4652bb037ecd4e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/743df919-ad7a-4a64-8ee1-ce2b69acc8a3.json and https://artists.proofprofile.net/proofs/artist/743df919-ad7a-4a64-8ee1-ce2b69acc8a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).