B2 Network: Unlocking Scalable Smart Contracts and DeFi on Bitcoin Layer 2

Key Takeaways

• B2 Network is the first practical Layer 2 zk-proof rollup solution for Bitcoin, enabling fast, low-cost, and secure smart contracts directly on Bitcoin.
• Combining EVM compatibility with both Bitcoin and Ethereum address accounts, supporting easy migration of DApps and a familiar developer experience.
• Uses zero-knowledge proof commitments anchored on Bitcoin, allowing fraud-proof challenge mechanisms and leveraging Bitcoin’s security model.
• Unlocks the next phase of BTC utility—including DeFi, NFTs, and SocialFi—transforming Bitcoin from a payment network into a programmable financial ecosystem.
• The B2 token powers the network with gas, staking, governance, fee discounts, and incentives for sustainable ecosystem growth.

B2 Network (B2) is transforming Bitcoin with the first practical Layer 2 zk-proof rollup. Combining EVM compatibility, fast and low-cost transactions, and robust security anchored to Bitcoin’s mainnet, B2 Network enables DeFi, NFTs, and dApps to thrive in the Bitcoin ecosystem.

B2 Network: A Practical Bitcoin Layer-2 for the Next Digital Asset Era

B2 Network ushers in a new chapter for Bitcoin with the first zero-knowledge proof commitment rollup Layer 2 solution. It brings together speed, low cost, EVM compatibility, and robust security, bridging Bitcoin with the flexibility and programmability of Ethereum.

Expanding Bitcoin’s Potential Beyond Payments

Bitcoin is more than a payment network. Its secure, decentralized foundation makes it the ideal base layer for the next generation of financial services and decentralized applications. B2 Network’s vision is to move Bitcoin beyond being just a store of value, empowering developers to build DeFi, NFT, and SocialFi solutions that leverage Bitcoin’s trust and liquidity.

How B2 Network Works: ZK-Proof Rollup Commitment on Bitcoin

The core innovation is a zk-proof verification commitment rollup architecture:

• Transaction Aggregation & Off-Chain Execution: Transactions are aggregated and executed off-chain in a Turing-complete virtual machine, dramatically increasing throughput and reducing costs.
• Zero-Knowledge Proof Generation: The zk-Prover generates cryptographic proofs to confirm transaction validity and protocol compliance, while preserving privacy.
• Commitment & Challenge: Proofs and commitments to updated states are submitted to Bitcoin Layer 1 via Taproot. Any observer can verify or challenge these commitments, using fraud-proof mechanisms similar to Optimistic Rollups, secured by Bitcoin’s consensus.
• EVM Compatibility: Developers can migrate or build DApps using familiar EVM tools while settling assets on Bitcoin.

This design brings scalability and programmability to Bitcoin while retaining mainnet security and data availability.

Commitments, NAND Gates, and ZK-Proof Security

B2 Network’s cryptographic commitments and circuit logic are built on Bitcoin script. Each proof is assembled from NAND gates, forming arithmetic circuits for zk-proof validation. While Bitcoin can’t natively verify zk-proofs, B2 Network overcomes this by using Taproot and Merkleized circuits, enabling open challenge and reward mechanisms for any observer.

Reviving Builder Culture and Unlocking New Use Cases

B2 Network goes beyond infrastructure—it seeks to reignite Bitcoin’s original builder culture. By making the network practical, EVM-compatible, and developer-friendly, B2 Network encourages a new wave of builders to launch DeFi, NFTs, and real-world use cases on Bitcoin.

B2 Token Utility and Ecosystem Incentives

• Gas Fees: Used for transaction fees on B2 Hub and Rollup.
• Staking: Secure the network as a validator or delegate for rewards.
• Liquidity Incentives: Earn B2 through TVL mining, campaigns, and liquidity pools.
• Governance: Vote on upgrades, fees, and ecosystem development.
• Fee Discounts & Staking: Enjoy discounted transaction fees and future sequencer staking opportunities.

The tokenomics distributes B2 tokens for investors, team, advisors, airdrops, staking, liquidity, and public allocation, supporting sustainable and decentralized growth.

Why B2 Network Matters

• True Bitcoin Layer-2: Direct integration with Bitcoin security and data availability.
• EVM Compatibility: Seamless DApp migration and new development for the broader Web3 ecosystem.
• Fraud-Proof & Open Challenge: Any observer can challenge rollup commitments and earn rewards, strengthening network trust.
• Practical for Builders & Users: Fast, affordable transactions supporting DeFi, NFTs, SocialFi, and more.
• Incentivized Ecosystem: Robust programs for developers, validators, and liquidity providers.

Conclusion

B2 Network is more than another Layer 2 solution. It’s the next evolutionary step for Bitcoin, delivering scalability, programmability, and security to empower builders and users and unlock a new era for digital assets.