Loopchain — At the core of ICON is loopchain. loopchain is a high-performance blockchain that can provide real-time transactions based on two factors, SCORE (Smart Contract on Reliable Environment)and BSI (Blockchain Signature Infrastructure). SCORE is a smart contract provided by loopchain ensuring high-performance running in real time and executed based on a container separated from the basic blockchain process, so the basic blockchain processes at the core of ICON can function properly even if there is a problem with the loopchain smart contract. Generally, when a Smart Contract is updated, data migration is required. However, due to ICON’s versioning capability, Smart Contracts do not require data migration with every update. This means that Smart Contracts can update quick and efficiently on ICON.