Fairblock is bringing privacy to Noble’s EVM AppLayer to enable stablecoin applications with confidential transfers, balances, and selective disclosure

For three years, Noble has built the backbone for stablecoin issuance and applications, powering high-throughput infrastructure for stablecoin issuers and application developers. Now, together with Fairblock, Noble’s AppLayer is evolving into a home for privacy-preserving payments and finance, giving developers a plug-and-play path to deploy fast, secure, compliance-ready applications.

Solving the three barriers to privacy adoption

Privacy in blockchains hasn’t been adopted by mainstream businesses for three reasons: compliance, performance, and security. Many systems today default to anonymity, which can trigger regulatory flags and make audits slow. Heavy client-side proving or FHE off-chain coprocessing often leads to poor user experience and introduces additional trust assumptions. Moreover, new payment networks rely on a single TEE design, which has been repeatedly proven to be insecure.

Fairblock’s multimodal architecture solves all three problems by combining lightweight homomorphic encryption (HE), zero-knowledge (ZK), and threshold identity-based encryption (IBE).

• Compliance: Fairblock’s method preserves traceability of funds and ensures they never touch illicit flows in a mixing pool. Additionally, enterprises and builders can disclose transaction details only when required, aligning with regulatory expectations while not introducing persistent backdoor access.

• Performance and user experience: Transactions finalize in about a second, not minutes, as seen in ZKP-only systems. There are no new wallets, no bridges into isolated chains, and throughput remains high.

• Security: Confidentiality is secured by cryptography only, and it's verifiable onchain. There's no reliance on MPC honest-majority assumptions, a single TEE, or an off-chain coprocessor.

Privacy shouldn’t come at the cost of user experience, and Fairblock’s multimodal cryptography effectively manages this tradeoff by partnering with Noble to deploy these tools on the AppLayer.

Examples of privacy for the real economy: B2B supply chain finance

While there are countless examples from the real economy that can serve as a testament to the importance of privacy technology embedded within public blockchains, B2B payments for enterprises are an illustrative example. A global study spanning 25 countries found that enterprise supply-chain blockchain pilots achieved cost reductions of 20-30%, traceability improvements by 75%, document-processing time cuts of 85%, and fraud reductions of 92%. Yet, confidentiality continues to be a critical component lacking across these pilots. 

Global enterprises require instant settlement, trust across suppliers, and confidential commercial terms. However, current public blockchains force them to compromise between leveraging the powerful features of a blockchain and preserving privacy for their business and customers.

Noble’s partnership with Fairblock demonstrates how businesses can take advantage of privacy technology integrated within a blockchain environment. By embedding confidential compute architecture and applications directly into Noble’s AppLayer, businesses gain confidential flows (i.e. encrypted invoice details, pricing, volumes, etc.), built-in traceability and disclosures to satisfy compliance, and enterprise-grade performance.

In order for blockchains to get real adoption, they need the same basic level of privacy people already get from their everyday web services. This is what Fairblock on Noble’s AppLayer enables. Without privacy, users are exposed to unwanted surveillance, potential exploitation, and the competitive disadvantages of having all their activity revealed.

“Building stablecoin issuance infrastructure over the past three years has shown us just how essential privacy will be for the next generation of stablecoin applications,” said Jelena Djuric, co-founder of Noble. “To unlock their full potential, stablecoins need an environment where sensitive financial activity isn’t exposed by default. The Noble AppLayer, with Fairblock, will give builders the freedom to create performant, privacy-preserving applications.”

“Fairblock isn’t just another ZK privacy layer or FHE library," said Peyman Momeni, founder of Fairblock. “Our goal is to protect users and build trust in finance and commerce using confidentiality. Noble is like the Switzerland of stablecoin infrastructure that’s neutral, connected, and trusted. Fairblock is the vault that secures the value and trust that businesses need to operate onchain. Together, we are making privacy on blockchain easy to unlock new use cases and drive adoption.”