BeL2, or Bitcoin Elastos Layer2, is a Layer 2 solution enhancing Bitcoin by enabling faster, more secure, and efficient transactions beyond simple transfers. It allows for sophisticated operations like smart contracts on Bitcoin, leveraging zero-knowledge proof technology for mutual perception of transactions between the Bitcoin network and Layer 2. This technology ensures the integrity and validity of transactions, expanding Bitcoin’s utility and enabling staking opportunities not previously available with Bitcoin.  BeL2’s innovative approach to leveraging Bitcoin for more complex applications paves the way for a truly decentralized digital economy, where users can “be their own bank” and participate in a broad range of financial and non-financial transactions without intermediaries.