right|thumb|Nina Gerber in 2010 Nina Gerber is an American guitarist who first came to attention when she accompanied singer-songwriter Kate Wolf from 1979 until Wolf's death in 1986. Gerber was born
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xa4a12650cd7b21e6880620ee7c2f5fc59c099061643493ec547a6074b043e25d. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/833c30e6-5961-4c74-ac0e-b92758df3660.json and https://artists.proofprofile.net/proofs/artist/833c30e6-5961-4c74-ac0e-b92758df3660.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).