vApps: Verifiable Applications at Internet Scale

TL;DR

The paper tackles fragmentation and limited scalability in blockchain by introducing vApps, a unified framework and Rust-based DSL with an SDK that abstracts proof generation, inter-chain connectivity, and data integrity. It argues that verifiable computing, particularly via general-purpose zkVMs, enables scalable, trust-minimized execution off the settlement layer, while remaining verifiable on-chain. Key contributions include a modular architecture (Sequencer, vApp Server, Prover, Verifiable Database), a Rust DSL that outputs on-chain and off-chain artifacts automatically, and performance demonstrations of native Rust execution, hardware acceleration, and precompiles that yield substantial speedups and efficiency gains. The framework promises interoperability across single-chain, multi-chain, and Web2-Web3 environments and aims to lower barriers to deploying verifiable internet-scale applications with strong security guarantees. Overall, vApps provide a practical path toward scalable, verifiable, and interoperable blockchain applications, enabling developers to focus on application logic rather than verification and connectivity intricacies.

Abstract

Blockchain technology promises a decentralized, trustless, and interoperable infrastructure. However, widespread adoption remains hindered by issues such as limited scalability, high transaction costs, and the complexity of maintaining coherent verification logic across different blockchain layers. This paper introduces Verifiable Applications (vApps), a novel development framework designed to streamline the creation and deployment of verifiable blockchain computing applications. vApps offer a unified Rust-based Domain-Specific Language (DSL) within a comprehensive SDK, featuring modular abstractions for verification, proof generation, and inter-chain connectivity. This eases the developer's burden in securing diverse software components, allowing them to focus on application logic. The DSL also ensures that applications can automatically take advantage of specialized precompiles and hardware acceleration to achieve consistently high performance with minimal developer effort, as demonstrated by benchmark results for zero-knowledge virtual machines (zkVMs). Experiments show that native Rust execution eliminates interpretation overhead, delivering up to an 197x cycle count improvement compared to EVM-based approaches. Precompiled circuits can accelerate the proof by more than 95%, while GPU acceleration increases throughput by up to 30x and recursion compresses the proof size by up to 230x, enabling succinct and efficient verification. The framework also supports seamless integration with the Web2 and Web3 systems, enabling developers to focus solely on their application logic. Through modular architecture, robust security guarantees, and composability, vApps pave the way toward a trust-minimized and verifiable Internet-scale application environment.

Figures (11)

• Figure 1: Decoupling settlement and logic execution by verifiable computing. Here, $x$ represents public input, $w$ denotes private data or witness, and $y$ is the resulting output of the computation $F(x,w)$.
• Figure 2: Comparison of monolithic and modular blockchain architectures.
• Figure 3: Comparison of trade-offs between different verifiable computing techniques.
• Figure 4: Hierarchical view of the generation of different application artifacts from vApp's universal codebase.
• Figure 5: Illustration of the interaction between different layers supported by the Unified Development Environment (a) The vApp computing core. (b) Expanding the computing core by integrating with other layers to ensure data integrity, computation integrity, and interoperability.