thumb|The Mediterranean Sea, an enclosed sea flowing into the Atlantic Ocean A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the inter
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 0x569b4358a4373d8c56d8395794ace2aba533065484bee489784c32516f314767. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3820660-6c6e-4b03-9d5c-4775155385eb.json and https://artists.proofprofile.net/proofs/artist/e3820660-6c6e-4b03-9d5c-4775155385eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).