TLDR: Nexus has activated its third and final testnet, marking a critical milestone towards its mainnet launch later this year. The Layer 1 blockchain aims to become a ‘world supercomputer’ by aggregating distributed computing power, specifically designed to support the exponential demands of artificial intelligence applications with verifiable computation and unprecedented scalability.
Nexus, a pioneering Layer 1 blockchain project, has announced the activation of its third and final testnet, signaling a significant leap towards its highly anticipated mainnet launch, targeted for the third quarter of 2025. This development positions Nexus as a formidable contender in the evolving landscape of blockchain technology, particularly with its ambitious goal of becoming ‘the world supercomputer’ – a distributed computing system engineered for the demands of the artificial intelligence era.
According to Daniel Marin, CEO and founder of Nexus, the core vision is to construct ‘the largest distributed computer system ever’ by aggregating computing power to forge a blockchain with a novel architecture. This innovative approach is designed to overcome the inherent limitations of current blockchain infrastructure, enabling the development of meaningful and scalable applications, especially those driven by AI.
Nexus’s architecture is a sophisticated blend of cutting-edge blockchain concepts. It aims to condense all blockchain states into a single succinct proof, reminiscent of Mina Protocol, but distinguishes itself by utilizing a RISC-V-based zero-knowledge Virtual Machine (zkVM). This zkVM is capable of handling vastly more complex workloads, including intensive AI inference, and is integrated as a native component of the chain, unlike service layers seen elsewhere. For data availability, Nexus employs a sampling approach akin to Celestia’s modular model, while its consensus mechanism is evolving from CometBFT to HotStuff-2, similar to protocols used by Aptos or Sui, ensuring fast finality for globally distributed proving tasks.
Crucially, Nexus integrates a decentralized compute cloud directly into its Layer 1, transforming every connected device into a node within a single, verifiable computer. This system operates on an Incrementally Verifiable Computation (IVC) machine, which generates succinct proofs for each computation step, aggregates them via DAG-style propagation, and consolidates them into a Universal Proof using the Stwo (Circle STARK) prover. This design theoretically enables horizontal scalability, meaning network throughput increases with every additional node.
Daniel Marin emphasized the necessity of this paradigm shift, stating, ‘We need to fundamentally rethink blockchain infrastructure in the age of AI. As AI models become more intelligent, they’re consuming compute and issuing transactions at exponential rates. How do we generate enough compute power to enable billions of transactions per second, and do it in a way that people can trust? The Nexus Layer 1 blockchain is our solution. It’s a world supercomputer that gets more powerful with each connected device.’
The project has already demonstrated significant community engagement, with previous testnets attracting over 2.1 million unique users and 3.6 million nodes contributing compute power over a five-day period. Currently, approximately 4,000 accounts remain active on Nexus’s block explorer. The testnet is designed for accessibility, allowing users to contribute compute power from any device, including laptops and phones, with a simple one-click process, earning rewards while helping to scale a verifiable network essential for the AI economy.
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Nexus’s commitment to verifiability is paramount, ensuring that every action can be proven, every model audited, and every interaction verified. The team boasts prominent figures in cryptography, including Jens Groth and Michel Abdalla, bolstering its credentials in zero-knowledge research. Furthermore, Nexus has launched two key initiatives: the Nexus Verifiable AI Lab, an R&D division focused on the intersection of verifiability, economics, and artificial intelligence, and the Verifiable Intelligence Alliance, which unites leading institutions to promote responsible and verifiable AI infrastructure. With over 50 partners in its ecosystem and backing from premier investors such as Blockchain Builders Fund, Dragonfly Capital Partners, Lightspeed Venture Partners, and Pantera Capital, Nexus is poised to make a significant impact on the future of decentralized AI.
