LPG may refer to: Science Liquefied petroleum gas, a flammable mixture of hydrocarbon gases Lipophosphoglycan, a class of molecule found on the surface of some eukaryotes, in particular protozoa M
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 0x116d355bcca4e8665ec93079e45875a34eaede7c15f70ef01138c534fffd3d5a. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f384e639-a2e7-405b-afa0-4ad70f8ea139.json and https://artists.proofprofile.net/proofs/artist/f384e639-a2e7-405b-afa0-4ad70f8ea139.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).