Bool Network

What is the Bool Network?

Bool Network is a Bitcoin Verification Layer that turns all blockchains into Bitcoin's Layer 2.

The Bool Network is an open, decentralized, and secure Bitcoin verification layer, driven by MPC-based distributed key management across evolving hidden committees. This innovative framework empowers developers to seamlessly construct a rapid, reliable, and scalable Bitcoin Layer 2 blockchain, consolidating security features inherited from Bitcoin into a comprehensive solution.

Bool Network introduces a pioneering permissionless cross-chain protocol, leveraging Multi-Party Computation (MPC), Trusted Execution Environment (TEE), and Zero Knowledge Proof (ZKP) technologies to enable seamless interoperability across diverse ecosystems. Additionally, Bool introduces Ring VRF, a protocol based on Zero Knowledge Proof (ZKP), aimed at reinforcing the system's security.

Bool Network’s Architecture

The core infrastructure of Bool Network comprises three key modules: Dynamic Hidden Committees (DHC), BoolChain, and an External Relayers System.

Here's an overview of each module and its role within Bool Network:

Dynamic Hidden Committees (DHC)

Acts as security guardians within Bool Network, safeguarding cross-chain messages from the application layer.

Each committee oversees a distinct private key, distributed among specific groups of MPC nodes.

Private key fragments are stored separately in the Trusted Execution Environment (TEE) hardware of committee members (MPC nodes).

Utilizes the Ring Verifiable Random Function (Ring VRF) protocol to ensure and validate the membership of MPC nodes within a committee.

Bool Chain

Serves as a public blockchain functioning as a distributed ledger.

Initially specialized to support and record the lifecycles and activities of Dynamic Hidden Committees across the network.

Designed as an Ethereum Virtual Machine (EVM)-compatible blockchain, enabling the development of applications on top of Bool Chain in the future.

External Relayers

Refers to participants responsible for submitting destination transactions within Bool Network.

Operates as a competitive, efficient, and accessible system open to the market.

Participants stand to profit from each transaction they submit to the destination chain.

Note: External Relayers do not guarantee the security of cross-chain messages.

How does Bool Network support the Bitcoin ecosystem?

Bool Network’s Verification Layer for Bitcoin helps improve the Bitcoin ecosystem in the following key areas:

Cost: The gas cost of cross-chain verification on Bool Network is highly cost-effective, comparable to a single on-chain signature verification. This affordability aligns with externally verified bridges, making Bool Network a budget-friendly option for cross-chain operations. Its economical cross-chain transactions make it an appealing solution for various blockchain use cases.

Speed: Bool Network's optimized design minimizes both on-chain and off-chain calculations, resulting in impressive cross-chain transaction speeds. The absence of a relay chain design eliminates redundant second-order verification, further enhancing cross-chain speed. This high-speed cross-chain communication significantly enhances the overall blockchain user experience.

Security: Bool Network implements an advanced security model to effectively protect against external hacker attacks, ensuring the integrity of assets and data. Internal conspiracy prevention mechanisms guard against collusion and insider threats, enhancing the network's trustworthiness. This strong security foundation instils confidence in users, making Bool Network an ideal platform for decentralized signature services.

Liveness: Each Dynamic Hidden Committee (DHC) in Bool Network is equipped with one or more backup DHCs upon creation, ensuring continuous availability. Backup DHCs mitigate the risks associated with potential downtime due to a significant number of Trusted Execution Environment (TEE) nodes being offline. This high level of liveness guarantees uninterrupted operations, crucial for time-sensitive cross-chain transactions.

Generality: Bool Network's versatility extends to supporting various asset types, enabling seamless cross-chain exchange. Its capability for arbitrary message transmission across heterogeneous networks makes it a flexible solution for diverse use cases. With its general approach, Bool Network can accommodate new and evolving blockchain assets and protocols, ensuring long-term relevance.

Scalability: Bool Network's efficient deployment process for supporting new heterogeneous chains involves a set of simple contracts, ensuring scalability. Adding support for new chains can be accomplished quickly and with minimal development time. Its successful integration with mainstream blockchains and non-Turing complete chains like Bitcoin further demonstrates its scalability. Bool Network's adaptability to diverse blockchain ecosystems positions it as a robust infrastructure for cross-chain bridges.