thumb|Vortex created by the passage of an aircraft wing, revealed by colored smoke thumb|249x249px|Von Kármán vortex street behind a drinking straw; milk was poured into the water to make the current
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 0x3889492d6f01b77b77e45c8c15a921a4e32d4e8b4bfecb41d16d255a5589c7a3. 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/2a3a9fc7-6161-4e9e-9e74-3a3afe165b53.json and https://artists.proofprofile.net/proofs/artist/2a3a9fc7-6161-4e9e-9e74-3a3afe165b53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).