BackgroundAs Bitcoin ETFs become available, the Bitcoin landscape is expanding with Layer2, Inception, and BTC staking options. However, there are some challenges due to BTC's contract limitations.Trustless bridge: Existing methods for bridging BTC include centralized multi-signature addresses (like tBTC, WBTC) and sidechains (like Liquid, Nomic) that depend on their own chain's TVL for security. But if the TVL is lower than the value of the managed BTC, there may be security issues...