Blockchain has long been surrounded by promises of scalability, fairness, decentralization, and ownership, yet few networks have succeeded in turning these ideals into reality. At the WAIB Summit 2025 in Monaco, Don Alucard, Conferences and Exchanges Manager at Nexa, presented Nexa Unlimited, as a functioning system built from the ground up to embody these principles through engineering, research, and relentless focus on usability.
In a digital landscape where temporary fixes like rollups, sidechains, and bridges attempt to mask architectural flaws, Nexa offers an alternative shaped by a foundational belief in simplicity, parallelism, and direct on-chain execution, setting out to build a reliable and future-proof base layer.
A Chain Without Limits
The roots of Nexa trace back to 2015, when the Bitcoin Unlimited organization was founded and a group of developers came together, committed to practical scaling and user freedom. After years of working on Bitcoin and Bitcoin Cash, and conducting battle-tested research, these efforts culminated in Nexa, a clean-slate, layer-one blockchain that retains the UTXO model for its simplicity and determinism while expanding its design for advanced programmability, high throughput, and equitable participation.
Functional, Scalable, and Built for Everyone
The network’s launch model reflects its commitment to fairness and decentralization, having eschewed ICOs, pre-mines, or venture-controlled token allocations in favor of an open, permissionless launch that allowed anyone to participate from the very beginning. Governance is handled through the Bitcoin Unlimited framework, using BUIPs, or Bitcoin Unlimited Improvement Proposals, ensuring that decision-making comes from within the community of builders and contributors rather than from financial stakeholders or marketing-driven agendas.
Scaling From the Ground Up
Nexa addresses the scaling problem not by adding layers or outsourcing functionality, but by integrating parallelism and flexible block sizing directly into its architecture. The system is capable of running 100,000 transactions in parallel, with blocks that expand to meet demand, allowing the network to handle everything from micropayments and NFT minting to mass token issuance and high-frequency transaction environments without relying on synthetic complexity or centralized shortcuts. Nexa offers a native, clean, and scalable experience that is both technically sound and practically ready for the demands of a global user base.
Privacy, Security, and Commerce
The next phase of Nexa includes cryptographic enhancements such as the integration of Diffie-Hellman key exchange with Schnorr signatures, enabling privacy-preserving transactions and encrypted asset exchanges that will support new forms of decentralized commerce, including digital marketplaces, intellectual property exchanges, and data-secure peer-to-peer networks, expanding the chain’s utility beyond currency and into infrastructure for the digital economy.
This focus on privacy, trustless verification, and secure transfer mechanisms positions Nexa as the ideal foundation for decentralized applications that require not just speed and scalability but also data integrity and user protection at the protocol level.
Ecosystem and Tooling
To support mass adoption, Nexa’s growing ecosystem includes a suite of tools designed to make blockchain interactions efficient and accessible. Wally Wallet provides a non-custodial interface for sending NEXA, managing tokens, and viewing NFTs, while NiftyArt offers creators an affordable, zero-code NFT platform. Underpinning all of this is Blitz, a high-performance signature verification engine developed by Dr. Peter Rizun, which reduces CPU load while increasing transaction throughput, laying the groundwork for hardware acceleration and future chip-level scaling. These tools reflect the project’s end-to-end vision, ensuring robustness and a smooth, and reliable user experience.
The Road Ahead
Nexa’s development roadmap includes the upcoming launch of Tailstorm, a consensus algorithm designed to improve confirmation stability and support fractional confirmations, as well as the integration of a native decentralized exchange and the continued evolution of Blitz for even greater hardware-driven performance, all of which reflect a team that builds for real-world use cases, with measurable, ongoing delivery.
Nexa offers a fully decentralized, highly scalable, and natively programmable blockchain that does not compromise on performance, fairness, or transparency. It is a foundation built for developers, creators, enterprises, and everyday users who require infrastructure that simply works, grows with demand, and empowers rather than restricts.