Introducing Nexio: The Next-Generation Bitcoin Rollup

At a high level, Nexio delivers 30,000+ TPS through its advanced parallelized execution model, while decentralized shared sequencing and MPC-TSS bridges eliminate single points of failure to ensure resilience. By seamlessly supporting both EVM and Move developers, it fosters interoperability and innovation, all while guaranteeing Bitcoin-grade security through a robust dual-layered finality system.

Below, we’ll provide a high-level overview of Nexio, highlighting:

• Core Technology Innovations: An introduction to the key advancements that make Nexio a game-changer.
• Solving Bitcoin Layer 2 Challenges: How Nexio overcomes the limitations of existing BTC Layer 2 solutions.
• Nexio’s Architecture: A closer look at the design and technical foundations driving its scalability, security, and interoperability.
• Future Plans: Key milestones, upcoming testnet, and Nexio’s vision for the future of Bitcoin DeFi.

Redefining Bitcoin DeFi

While BTC Layer 2 solutions have attempted to address Bitcoin’s limitations, they face critical shortcomings:

1. Limited Throughput & Slow Finality: Low transaction speeds and settlement delays undermine reliability for global-scale applications.
2. Centralized Trust: Custodial bridges and centralized sequencers create single points of failure and compromise decentralization.
3. Poor Developer Experience: Niche tools and languages fail to attract Ethereum’s vast developer ecosystem.
4. Fragmented Interoperability: Inefficient cross-chain support leads to siloed and fragmented Bitcoin DeFi ecosystems.

Nexio represents the next evolution of Bitcoin DeFi, overcoming existing limitations by leveraging the MoveVM alongside cutting-edge architectural components like decentralized shared sequencing and dual-layered finality to deliver unparalleled scalability, security, and interoperability.

To begin, Nexio achieves extremely high throughput and decentralized sequencing by leveraging the MoveVM and BlockSTM for parallelized transaction execution, surpassing an unprecedented 30,000 transactions per second. This is further reinforced by the M1 decentralized shared sequencer, which a) eliminates single points of failure, b) reduces censorship risks, and c) enhances the overall reliability and scalability of Nexio’s network.

Furthermore, Nexio enables seamless interoperability and developer accessibility with its innovative MPC-TSS bridge. This bridge facilitates trust-minimized, decentralized cross-chain transfers by distributing key control across multiple parties, significantly reducing reliance on custodial or multisig models. Nexio’s compatibility with both Move and EVM bytecode also removes friction for developers, allowing Ethereum projects to migrate seamlessly without rewriting contracts. This empowers developers to build interoperable, scalable applications while tapping into Bitcoin’s unparalleled security.

Finally, Nexio’s dual-layered finality mechanism combines Fast-Finality Settlement (FFS) and Bitcoin-backed ZK-Finality. FFS enables near-instant confirmation of transactions through a network of staked validators, while ZK-Finality leverages Bitcoin’s cryptographic security to ensure immutable, trust-minimized settlement.

We’ll elaborate on each of these below.

The Technical Foundations of Nexio

In this section, we’ll provide an overview of Nexio’s core components: the Move Executor for smart contract execution, the MPC-TSS Bridge for decentralized asset transfers, the M1 Sequencer for decentralized transaction ordering, and the dual-layered finality mechanism that ensures rapid and Bitcoin-secured settlement.

The core of this is the Move Executor, responsible for processing transactions and executing smart contracts. It has two primary components:

1. The MoveVM: A highly advanced execution engine, originally developed by Meta’s blockchain research team. Key features include resource-oriented programming to prevent asset duplication or loss, parallelized transaction execution for unmatched scalability, and formal verification to minimize vulnerabilities and ensure code correctness.
2. Fractal: A powerful interpreter within Nexio’s framework that enables easy migration of Solidity contracts to Nexio without rewriting code. It bridges Ethereum’s developer ecosystem with the MoveVM’s advanced capabilities, retaining original functionality while unlocking enhanced scalability and security.

Nexio enables fast, decentralized, and trust-minimized cross-chain transactions through its Multi-Party Computation (MPC) Threshold Signature Scheme (TSS) bridge. MPC is an encryption technique that allows multiple parties to collaboratively generate and manage cryptographic keys without exposing them, while TSS is a signature scheme that ensures that no single entity has complete control over the private keys. This means that key control is distributed across multiple parties, eliminating single points of failure and enhancing security without compromising speed or trustlessness.

The M1 shared sequencer operates across multiple rollups, ensuring a unified and consistent transaction ordering system. This simplifies state synchronization across connected chains, reducing latency for cross-chain communications. By efficiently managing transactions across multiple networks, the M1 sequencer enhances both the security and performance of cross-chain operations.

By efficiently managing transactions across multiple networks, the M1 sequencer not only enhances the security and performance of cross-chain operations but also plays a critical role in Nexio’s dual-layered finality mechanism.

Notably, this mechanism further strengthens transaction security and efficiency by:

• Fast-Finality Settlement (FFS): Rapidly confirming over 30,000 transactions per second using a network of staked validators, with slashing mechanisms to ensure honest behavior.
• ZK-Finality: Anchoring transactions on Bitcoin through Zero-Knowledge Proofs (ZKPs), delivering cryptographic security and immutable finality.

The M1 sequencer ensures seamless transaction ordering and state synchronization, while the dual-layered finality design guarantees both rapid settlement and Bitcoin-backed, long-term security. Together, these components provide a robust and trust-minimized foundation for cross-chain operations.

In summary, Nexio integrates several key components that enable seamless support for both EVM and Move ecosystems while delivering exceptional throughput and Bitcoin-grade security.

These include:

• The M1 Shared Sequencer: Ensures unified transaction ordering across multiple rollups, enabling seamless state synchronization and efficient cross-chain communication.

• The MoveVM and Fractal: Support both Move and EVM ecosystems, allowing developers to build new applications or migrate existing ones without friction. This includes the MoveVM enabling parallel execution for high throughput and low latency.
• Dual-Layered Finality: Combines Fast-Finality Settlement for rapid confirmations and ZK-Finality for Bitcoin-backed cryptographic security, ensuring reliability and trustlessnesS.

What’s Next?

2024 marked a year of significant achievements for Nexio, including a successful $2.2M raise led by Lattice and major development milestones, such as the launch of our internal testnet. These accomplishments have laid a strong foundation in 2025, a year poised for transformative growth and innovation.

Looking ahead, the launch of our private testnet is just weeks away, focusing on early developer onboarding and rigorous testing. Shortly after, we plan to roll out the public testnet in Q1, providing broader access for developers and projects to explore and build on Nexio. These launches will showcase Nexio's technical capabilities and invite partnerships across the blockchain space.

Our 2025 priorities extend beyond the testnet launches:

• Ecosystem Growth: We aim to integrate with additional platforms and onboard developers to create DeFi protocols, NFTs, and other innovative applications that leverage Bitcoin’s unparalleled security.
• Technical Development: Expanding and refining our technical documentation will be a key focus, ensuring accessibility for developers from diverse ecosystems, including Move and Ethereum.
• Marketing and Community Building: In 2025, we will ramp up marketing efforts, increasing engagement through technical blogs, long-form content, and community initiatives to drive awareness and adoption.

With these milestones and initiatives, Nexio is well-positioned to lead the evolution of Bitcoin DeFi, providing a scalable, secure, and interoperable foundation for the next generation of decentralized applications.

Join Us Today

The Bitcoin DeFi revolution is just beginning, and Nexio is at the forefront of this transformation, delivering unmatched scalability, security, and interoperability for decentralized applications.

We’re inviting developers, builders, and visionaries to be part of this journey. With our private testnet launching soon and a public testnet on the horizon, now is the perfect time to explore Nexio’s potential and help shape the future of Bitcoin DeFi.

• Join our Discord: Whether you’re a developer, builder, or simply curious about the future of Bitcoin DeFi, we invite you to connect with us on Discord and be part of the Nexio community.
• Follow us on X: Stay up-to-date with the latest news, announcements, and opportunities as we scale Bitcoin DeFi together.

If you’re a developer, we’d love to hear from you - reach out directly! We have exciting ideas and opportunities to help you get started building on Nexio.

Let’s build the future of Bitcoin DeFi together.