B2 Network | Bitcoin Layer 2

What is the B² Network?

The B² Network represents a Layer-2 solution designed to bolster transaction speed and expand application diversity while maintaining robust security measures.

As the pioneer of zero-knowledge proof verification commitment rollup on Bitcoin, the B² Network utilizes rollup technology to facilitate the execution of Turing-complete smart contracts for off-chain transactions. This approach significantly enhances transaction efficiency and reduces costs.

Furthermore, the network leverages zero-knowledge proof technology alongside gate commitment and challenge-response of Taproot to ensure transactional privacy and security during confirmation on the Bitcoin blockchain. With a primary objective of transforming Bitcoin into a versatile platform, the B² Network aims to introduce innovative applications such as DeFi, NFTs, and other decentralized systems. In essence, the B² Network embodies a seamless progression, aligning with Bitcoin's fundamental principles while paving the way for future developments in the digital asset landscape.

How does the B² Network support the Bitcoin ecosystem?

EVM Compatibility: The B² Network enables Bitcoin to seamlessly integrate with the Ethereum Virtual Machine (EVM) and its surrounding ecosystem, thereby enhancing compatibility and interoperability between the two networks.

ZK-Rollup on Bitcoin: B² Network is a Layer 2 solution on Bitcoin, primarily utilizing zero-knowledge proof verification commitments submitted to Bitcoin. It allows challengers to initiate fraud proofs for disputes, aiming to leverage the powerful consensus of Bitcoin to ensure the security of the B² Network. Through zk proof commitment and challenge-response, B2 Network achieves bidirectional confirmation on Bitcoin, rather than just unidirectional data writing onto Bitcoin.

Account abstraction: By implementing account abstraction, B2 Network can support Bitcoin address accounts, Ethereum address accounts, and Email accounts. For Bitcoin users, cross-chain interactions on the B² Network are possible without changing wallets. Support for Email accounts also lowers the barrier for web2 users to utilize the B² Network.

Store Bitcoin state: Storing Bitcoin state offers three benefits:

It eliminates the need for a bridge from Layer1 to Layer2, as the Bitcoin state in zkEVM can automatically trigger cross-chain transactions from Layer1 to Layer2;
It provides developers with Bitcoin-oriented programming capabilities, enabling the development of various applications based on Bitcoin transactions;
It offers users a trustless, decentralized Bitcoin Indexer service to query the Bitcoin state.

Fast and Secure: Utilizing rollup technology, the Rollup Layer within the B² Network functions independently of consensus, enabling exceptional performance. Furthermore, the robust Data Availability (DA) Layer solution of the B² Network ensures enhanced security.