ScaleBit Report: Bool Network’s Terrific Work on Extending Bitcoin

During a long period, the transaction throughput of Bitcoin has always been a focal point of user concern. Despite Bitcoin’s excellent performance in security and decentralization, its limited transaction speed restricts its ability to process a large volume of transactions. Recently, Layer 2 solutions based on Bitcoin have brought new perspectives to address this issue.

Due to Bitcoin’s lack of smart contracts, current L2 solutions are generally affected by issues related to centralization. In response to these challenges, some projects have started to focus on the infrastructure aspect. Bool Network, introduced by us, is one such representative project. It is a permissionless, decentralized, and secure Bitcoin verification layer aimed at extending Bitcoin securely and decentralizedly without altering Bitcoin’s consensus rules, thereby promoting the prosperity of the Bitcoin ecosystem.

We are honored to have the blockchain security team ScaleBit, under BitsLab, which specializes in providing secure solutions for ZKP, Bitcoin Layer 2, and cross-chain applications, conduct an in-depth analysis and evaluation of Bool Network from three dimensions: framework, modules, and attack surfaces. They fully considered potential risks to ensure its capability to execute tasks correctly, efficiently, and reliably. Finally, ScaleBit compared Bool Network with other Bitcoin Layer 2 solutions and concluded the information into a technical feasibility analysis report of Bool Network. Click “Read Original Article” or visit the following link to view the detailed report: [https://github.com/boolnetwork/audit-reports](https://github.com/boolnetwork/audit-reports)

In the report, ScaleBit points out that Bool Network’s solution focuses on the verification service for Bitcoin L2s. One key aspect is the integration of the Data Availability Layer (DA Layer) with the validator network, which supports direct asset staking and verification, ensuring the management of Bitcoin L2s’ transactions in a simplified and secure manner. On the other hand, the integrated solution enhances the security and trustworthiness of the system by using Zero-Knowledge-Proof based Verifiable Random Function (ZKP-VRF) and Trusted Execution Environment (TEE) technology, making collusion and malicious behavior among validator network nodes extremely difficult. Additionally, Bool Network innovatively introduces the Dynamic Hidden Committee (DHC) mechanism, which solves security computation challenges in a decentralized environment by hiding node identities and privacy data. It ensures that only dynamically selected and unpredictable subsets of validators participate in each round of consensus and verification, significantly enhancing transaction security and integrity. Moreover, DHC is responsible for controlling cross-chain bridges and generating blocks for recording asset changes in each round while operating assets in the L1 bridge. To protect the identities of committee members, Bool Network also adopts the Ring-Verifiable Random Function (Ring-VRF) protocol and introduces ZKP in the communication process to ensure that random numbers cannot be known or manipulated, thus preventing collusion and malicious behavior within the network. Last but not least, to ensure the privacy and integrity of critical components, all key management processes are carried out in a Trusted Execution Environment (TEE). This proposal aims to allow nodes to operate normally but cannot access critical privacy data, thus preventing malicious activities while maintaining decentralization and security.

In the final section of the report, ScaleBit compares Bool Network with other Bitcoin Layer 2 solutions, analyzing the reliability of Bool Network in cross-chain asset protection and the good development prospects of its comprehensive technical solution. Meanwhile, ScaleBit also emphasizes the importance of security aspects and raises some thoughtful considerations. Among these considerations, particular emphasis is placed on the crucial role of TEE environment and data availability in Bool Network’s security assumptions, which must undergo strict scrutiny to ensure they function as expected.

In the future, Bool Network will continue to invest in communication and cooperation with the ScaleBit team, committed to building a more perfect ecosystem, providing real-time support and solutions to ensure its security and stability are continually strengthened. We firmly believe that through continuous efforts from both sides, a secure and reliable Bool Network ecosystem can be jointly created, bringing more value and possibilities to the entire blockchain industry.

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