Introduction

The Nubit project, secured by Bitcoin and backed by Polychain, offers revolutionary opportunities for innovation in the Bitcoin ecosystem. Nubit is a scalable and cost-effective data availability layer designed to expand Bitcoin’s capabilities and enhance the efficiency of applications such as Ordinals, Layer 2s, and price oracles.

What is Nubit?

Nubit is a data availability layer that enables the Bitcoin community to scale its data volumes while maintaining low costs. The key components of Nubit include validators, full storage nodes, and light clients.

Key Components of Nubit:

• Validators: These nodes operate using the NubitBFT consensus algorithm and are responsible for proposing blocks and verifying their integrity. Validators play a crucial role in maintaining the network’s integrity and security.

• Full Storage Nodes: These nodes receive block data from validators and store it reliably. They are responsible for ensuring data availability, which is critical in mitigating risks such as data withholding or tampering.

• Light Clients: These nodes receive block headers broadcasted by validators and can initiate requests to full nodes to verify data availability.

Why Do We Need Nubit?

The surge in demand for Bitcoin inscriptions has led to a significant increase in the volume of data stored on the Bitcoin blockchain. This highlights the need for a solution to Bitcoin's inherent data throughput limitations. Nubit addresses this need by providing a scalable and reliable data storage solution, aligning with Bitcoin's principles of trust minimization.

Data Availability Layer

In blockchain, data availability ensures that data uploaded by users is reliably stored and can be verified by other network participants. The Data Availability Sampling (DAS) technique allows network participants to verify block data availability without downloading the entire block, greatly enhancing scalability and decentralization.

Consensus

Nubit aims to fully inherit Bitcoin’s security, including economic security, temper resistance, and censorship resistance.

Bitcoin Staking

The Bitcoin staking approach allows Bitcoin holders to participate in Proof of Stake (PoS) blockchains directly, without third-party services. This method offers strong economic security and allows for quick release of staked assets, improving liquidity.

Bitcoin Anchoring

Bitcoin anchoring reduces the unbonding period for staked assets, mitigating attack risks and speeding up withdrawals. This security measure records block hashes and validator votes on the Bitcoin blockchain, providing an additional layer of data protection.

SNARK-based Signature Aggregation

To achieve high censorship resistance, Nubit uses an efficient CometBFT-based consensus, supported by SNARK for signature aggregation. This reduces communication and verification costs in systems with many validators, significantly improving performance and reducing expenses.

Conclusion

The Nubit project is a significant advancement in the Bitcoin ecosystem, offering a scalable and secure solution for data availability. Through innovative technologies like the consensus mechanism based on Bitcoin staking and Bitcoin anchoring, as well as SNARK-based signature aggregation, Nubit ensures high reliability and efficiency. This expands possibilities for developers and users, fostering further growth and development within the Bitcoin community.