• Introduces stateless validation: an innovative approach to validating state transition, or the process of updating the status of all the data posted to the blockchain. Now, NEAR validators no longer have to maintain the state of a shard locally.
• Scalability, usability improvements: Nightshade 2.0 Improves single-shard performance significantly and adds capacity for more shards: NEAR currently has 6 shards and the plan is to have 10 shards by the end of 2024.
• Advancing towards NEAR vision: Upgrades NEAR’s already high-performance and scalable infrastructure to support the growing number of users and activities in the NEAR ecosystem, including consumer apps, Chain Abstraction, modularity, DeFi, and User-Owned AI, to a billion users and beyond. NEAR saw over 20 million monthly active users in July 2024, with over 110 million accounts overall. 

Nightshade 2.0, the latest advancement in the NEAR Protocol sharding roadmap, is now live on Mainnet. This upgrade introduces stateless validation and improves the scalability, performance, and decentralization of the protocol. Nightshade 2.0 is a major milestone for the NEAR network, marking the biggest change to the protocol since mainnet launched in October 2020. 

Introducing Stateless Validation

Introducing stateless validation to the sharding architecture of NEAR Protocol both improves single-shard performance as well as adds capacity for more shards on the network. The upgrade happens live, without affecting mainnet users and applications. Currently at six shards, NEAR aims to have ten shards by the end of 2024. 

Stateless validation is an innovative approach to validating state transition, or the process of updating the status of all the data posted to the blockchain. Sharding is NEAR’s unique approach to scaling, which partitions the blockchain into multiple parallel “shards.” With Nightshade sharding, both the state and processing are divided among shards. Now, NEAR validators no longer have to maintain the state of a shard locally and can retrieve all the information they need to validate state changes, or “state witness,” from the network. Stateless validation was originally proposed by Vitalik Buterin in 2017 and NEAR is one of the only blockchain networks to implement the approach. 

Unlocking Even Higher Performance & Scalability

In Nightshade 2.0, validators no longer need to track all shards and there are lower hardware requirements and costs for running a validator, potentially allowing more validators to join the ecosystem—which will further decentralize the network and enhance its security over time. 

“Nightshade 2.0 is a fundamental reworking of NEAR sharding and is a major milestone in NEAR’s development roadmap that will greatly increase NEAR’s efficiency and scalability,” said Bowen Wang, Head of Protocol at NEAR One. “In particular, the new sharding implementation paves the way to significantly increase NEAR’s already-fast transaction throughput. It also substantially lowers the cost of operating validators, lowering the barrier to entry for  more people to become validators, which will improve the decentralization of the network. These performance and scalability upgrades will ensure that NEAR remains fast, cost-effective, and efficient even with millions more users.” 

“Nightshade 2.0 solves the fundamental bottleneck issue on most L1s of how to scale while preserving both usability and security,” said Illia Polosukhin, Co-Founder of NEAR Protocol and CEO of the NEAR Foundation. “By improving the performance of each shard and adding more shards, while also further decentralizing the network, NEAR sets yet another new technical standard with this upgrade. With Nightshade 2.0, NEAR sharding now enables the network to support hundreds of millions of users with high performance and speeds across consumer apps, modularity, Chain Abstraction, DeFi, and User-Owned AI.”

What’s Next for NEAR Sharding?

How does Nightshade 2.0 fit into the long-term sharding roadmap for the NEAR Protocol? Nightshade 2.0 is a shift in direction from the original Nightshade sharding architecture NEAR launched with in 2020, bypassing some fundamental roadblocks in that protocol design around the implementation of challenges in the initial idea of Phase 2, while also unlocking additional benefits. 

From here, the focus for the remainder of 2024 will be on making further performance improvements and optimizations on top of those unlocked by Nightshade 2.0. These include introducing a new method of resharding, reducing gas costs for storage operations, and optimization of state witness size. Starting in early 2025, planning for the next phase of NEAR scalability and sharding will begin, including on dynamic re-sharding, the holy grail of sharding, where the network dynamically adjusts the number of shards based on the load. The Near One team will share a more detailed roadmap update in the coming days. 

For more information on Nightshade 2.0, watch Bowen Wang and Illia Polosukhin’s Whiteboard Series unpacking the NEAR Protocol. For deep technical details on how NEAR sharding and stateless validation works, read the Nightshade 2.0 whitepaper. 

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NEAR’s vision of chain abstraction to facilitate broad adoption of decentralized apps requires an extremely scalable blockchain layer. From the start, NEAR has been designed to scale with demand towards mainstream adoption. A primary benefit of the new sharding implementation will be an up-to-10x speed improvement to NEAR’s already-fast transaction throughput. Sharding is NEAR’s unique approach to scaling, which partitions the blockchain into multiple parallel “shards.” Combined with NEAR already having the lowest transaction fees in Web3, this sharding upgrade positions NEAR at the forefront of Web3 in terms of both performance and scalability. Phase 2 greatly improves the network’s capacity for end user volume and is an important landmark on the road to global-scale usage of Web3. 

“NEAR continues to make progress on bringing Chain Abstraction infrastructure that can scale to a billion users and beyond,” said Illia Polosukhin, Co-Founder of NEAR Protocol and CEO of NEAR Foundation. “The scalability improvements from stateless validation can unlock even better user experiences for more end-user applications, whether multichain DeFi-style dapps or those aimed at mainstream users.”

Phase 2 introduces the most significant changes to the NEAR Protocol since its Mainnet launch in 2020. The biggest of these is the implementation of stateless validation: an innovative approach to state change, or the process of updating the status of all the data posted to the blockchain. Now, NEAR validators no longer have to maintain the state of a shard locally and can retrieve all the information they need to validate state changes, or “state witness,” from the network. 

With stateless validation, NEAR can finally achieve the truest form of sharding, where shards can function mostly independently at the consensus level to improve decentralization and throughput while preserving the highest security guarantees. An added benefit is that the hardware requirements to run most validator nodes are dramatically reduced (a smaller number of “chunk proposer” validators with specialized hardware will validate blocks with state held in memory). This also paves the way for greater decentralization of the network by lowering the barrier to entry to become a validator.

“We’re very excited about the potential for future proofing the NEAR protocol design with stateless validation,” said Bowen Wang, Director of Protocol at Pagoda. “From a research perspective, we expect that as zero-knowledge tech matures, more protocols will adopt a similar approach, where a smaller set of expensive machines execute transactions and produce proofs, while a bigger validator set validates the proofs. This will enable more unified security across networks and defragment Web3, advancing a key aspect of the chain abstraction vision.” 

Phase 2 is a shift in direction from the original Nightshade sharding architecture NEAR launched with in 2020, bypassing some fundamental roadblocks in that protocol design around the implementation of challenges in the initial idea of Phase 2, while also unlocking additional benefits. Other network improvements in Phase 2 include in-memory trie, wherein validator nodes can load the entire state into RAM for maximized performance. This will greatly improve transaction throughput thanks to minimizing storage access. 

NEAR users should not experience any downtime with the transition to Phase 2 and no special action is required from validators, apart from adjusting hardware specs. Through dozens of protocol upgrades since Mainnet launch, including three major upgrades, the core NEAR protocol has had 100% uptime with zero disruption for developers and end users. 

On Thursday, February 1, Stake Wars IV: Attack of the Transactions will launch to incentivize battle testing of the new sharding architecture. Planned to run through March 31, the latest edition of Stake Wars invites community members to test features and generate traffic. For more information about participating and deeper technical detail about Phase 2, visit the Stake Wars page on Github. 

With the launch of Phase 2, NEAR becomes one of the only networks in Web3 to implement stateless validation to improve scaling and paves the way for further network performance and scalability improvements in the future roadmap. A technical paper with more detail about NEAR’s new sharding design is forthcoming later in Q1. Phase 2 is expected to launch on NEAR Mainnet in May 2024.

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