BEVM Reveals Innovative Taproot Consensus for Next-Generation Bitcoin Layer 2 Solution

Cardiff, UK, May 26th, 2024, Chainwire
On May 20, 2024, the Bitcoin Layer2 development team BEVM released the technical yellow paper titled “Taproot Consensus: A Decentralized BTC Layer2 Solution.” This paper details the implementation of Taproot Consensus, leveraging native Bitcoin technologies such as Schnorr signatures, MAST, and Bitcoin SPV nodes to build a fully decentralized BTC Layer2 solution. Taproot Consensus represents a significant leap in native Bitcoin scalability, combining existing Bitcoin technologies innovatively without modifying Bitcoin’s core code.

History of Bitcoin’s Technical Iterations
– October 31, 2008: Satoshi Nakamoto published “Bitcoin: A Peer-to-Peer Electronic Cash System,” introducing Bitcoin and the concept of SPV (Simple Payment Verification).
– January 3, 2009: Nakamoto mined the Genesis Block, launching Bitcoin. The original code used ECDSA for digital signatures instead of the more suitable Schnorr signatures, which were under patent protection at the time. Schnorr signatures retain all the functionalities and security assumptions of ECDSA and can surpass the 15-signature limit of ECDSA, enabling the management of Bitcoin with thousands of addresses without affecting signing speed.
– 2018: Bitcoin core developers proposed integrating Schnorr signatures into the Bitcoin network.
– November 14, 2021: The Taproot upgrade integrated Schnorr signatures and introduced MAST (Merkelized Abstract Syntax Trees), enabling smart contract-like capabilities and decentralized multi-signature management.
The Taproot Consensus solution by BEVM builds on these advancements, combining Schnorr signatures and MAST to manage multi-signature addresses and enable complex business scenarios in Bitcoin Layer2.

Overview of the Taproot Consensus Solution:
The yellow paper begins by highlighting Bitcoin’s non-Turing complete nature and limited functionality for smart contracts. It argues for using Bitcoin’s existing capabilities to build a decentralized Layer2 solution rather than modifying Bitcoin Layer1. BEVM’s Taproot Consensus combines Bitcoin’s Taproot technology (Schnorr signatures and MAST), Bitcoin SPV light nodes, and the BFT PoS consensus mechanism to create a decentralized and consistent Layer2 network.

Detailed Explanation of Taproot Consensus Architecture
The Taproot Consensus architecture comprises three main components: Schnorr+MAST, Bitcoin SPV, and Aura+Grandpa.
– Schnorr+MAST: Uses these technologies from the Taproot upgrade to achieve decentralized Bitcoin multi-signature management driven by Bitcoin code.
– Bitcoin SPV: Allows synchronization and verification of Bitcoin transactions without running a full node.
– Aura + Grandpa: Advanced PoS consensus protocols for Byzantine fault tolerance, ensuring high consistency among network nodes.
In the BEVM system, each validator holds a BTC private key for Schnorr signatures. The aggregated public key forms a MAST tree, enabling BTC transfers and inscriptions to the threshold signature address. Validators act as Bitcoin SPV light nodes, synchronizing the BTC network state securely and permissionlessly. Aura+Grandpa ensures the Layer2 network’s security and trustworthiness, with assets managed by BFT consensus.

Other Technical Details in the Yellow Paper – True Decentralization
The yellow paper also details the implementation of Schnorr signatures, MAST, Bitcoin SPV light nodes, and Aura+Grandpa, providing a comprehensive technical outline for those interested in Bitcoin technologies. It explains the Musig2 implementation and contrasts with other BTC Layer2 projects like Mezo, which uses the tBTC protocol. Unlike tBTC, which relies on a network of nine signatories, Taproot Consensus integrates multi-signature networks with BFT PoS consensus, achieving true decentralization.

The BEVM team’s technical yellow paper comprehensively describes Taproot Consensus, a Bitcoin Layer2 solution built entirely on native Bitcoin technologies. It respects and innovates on Bitcoin’s original technological direction, making it a true evolution of native Bitcoin scalability technology. As the Bitcoin ecosystem evolves, solutions like Taproot Consensus will be crucial for its development, serving as major cornerstones for truly decentralized Bitcoin Layer2 solutions. For more information, visit BEVM’s official website or follow BEVM on Twitter.

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