thumb|Coat of arms of the Balbi family of Venice Balbi (Known also as Balbis, Balby, Balbus, Valbi or Valvis) is the surname of the ancient noble Roman Family of Balbi where after the fall of the West
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 0x5de4570714f9598b3e380f0d96b62e1e4a20fc5645c2aebcc220959b00d35a83. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aabeb86-d9f7-4507-9057-e913d85218a7.json and https://artists.proofprofile.net/proofs/artist/5aabeb86-d9f7-4507-9057-e913d85218a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).