thumb|upright=1.35|right|York International liquid-cooled chiller A chiller is a machine that removes heat from a liquid coolant via a vapor-compression, adsorption refrigeration, or absorption refrig
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 0x72139dc41aae0ab6b2238af54968998dcef1e4ee2d2d3f1fe8b43574dcfd86b7. 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/801ffba0-fd82-4872-b2dc-9ef9a08b3d6b.json and https://artists.proofprofile.net/proofs/artist/801ffba0-fd82-4872-b2dc-9ef9a08b3d6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blue Cafe, Lounge & Chill out Music, Vol. 1