Fairblock enables confidential transfers on public blockchains where transaction amounts and balances are encrypted by default, while preserving performance, usability, and compliance requirements. The system is designed to support financial institutions, neobanks, payroll providers, and trading firms that require privacy without introducing operational complexity or new trust assumptions. The design separates confidentiality from unlinkability. In both cases, transactions remain subject to sanctions and AML screening, with full traceability and transparency available through selective disclosure. Confidentiality is always enabled, ensuring that transaction amounts and balances remain encrypted. Compliant unlinkability is optional and can be enabled by partners only when needed for specific use cases such as merchants, funds, or market makers. This mirrors the internet: HTTPS is the default for everyone, while stronger privacy tools such as VPNs are used only when additional protection is required.

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How the Fairblock Product Family Fits Together

Fairblock is the underlying confidentiality infrastructure. It can add encrypted amounts and balances to any application, blockchain, or digital asset while preserving selective disclosure and configurable compliance. Stabletrust is Fairblock’s product family for confidential and compliant stablecoin transfers across chains. Users can access flagship products built by Fairblock, while developers and partners can embed the same capabilities into their own wallets, neobanks, payment apps, agents, and financial systems. In short, Fairblock provides the confidentiality layer, Stabletrust applies it to stablecoins, and the products above offer different ways to use or integrate that capability. Stabletrust Pay is the universal flagship app for sending transfers, while Stabletrust Pro gives institutions and enterprises secure team access, MPC-backed wallets, and batch financial operations. The SDK and API let partners build the same functionality into their own products. The Compliance Dashboard provides scoped oversight, while CUSD and YieldShield show how the technology can power dedicated stablecoin and yield products, including user and partner incentives such as yield and points.

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Defining Confidential Transactions

Amounts and balances are encrypted while addresses stay transparent. This combination lets you:
  • Support DeFi composability and integrations
  • Stay traceable for audits
  • Selectively disclose encrypted amounts and balances, only when and what it is required
It is not a mixer and not an anonymity pool. It is programmable confidentiality built for legitimate businesses and finance. This approach aligns with the model BIS, ECB, IMF, and others are describing for next-generation payment systems.

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Core Applications

  • Confidential salaries for employees, contractors, and KOLs
  • Private peer-to-peer, cross-border, and merchant payments
  • Integration with payment networks for compliant, confidential settlements
No one wants comp, vendor rates, or partner payouts scraped and indexed. That’s HR liability, competitive intelligence leakage, and reputational risk.
  • Encrypted orderflow and resistant to manipulation (e.g. frontrunning)
  • Confidential liquidity, collateral, and position management
If the market can see size and timing, you’re handing a competitive edge to competitors and bots. Confidential amounts stop your orders from working against you.
  • Managing onchain VC liquid funds, corporate, and fund treasury operations
  • Confidential inter-subsidiary and OTC settlements
Treasury activity is strategy. Get the benefits of moving funds onchain without broadcasting your strategy to the entire market.
  • Private deals, acquisitions and token buyouts without market leaks
  • Pre-announcement confidentiality and selective auditability
Onchain corporate actions expose you to frontrunners. They also create legal and regulatory questions if markets react before disclosure windows.
  • Tokenized securities trading (equities, bonds, funds)
  • Institutional settlement workflows (custody, issuance, venues)
Enable confidential trading and settlement of tokenized securities without exposing portfolio composition or execution terms on public chains. Designed to fit the operational needs of custodians, issuers, and market venues.
  • Selective disclosure and bad actor filtering
  • OFAC and AML-compliant stablecoins and regulatory auditability
  • Protection against GDPR/MiCA/CCPA/Clarity related data exposure risk for institutions
Regulators increasingly expect two things: don’t expose everything to everyone, and do let authorized parties verify under lawful authority. Fairblock follows this exact model. You can disclose a specific transaction, and only that transaction, to a tax authority, regulator, or auditor without revealing your entire financial history. This maps to how financial supervisors describe acceptable digital asset systems and how TradFi already handles sensitive trade and payments data.
  • Confidential agentic payments for merchants, compute resources, nano-payments, and supplychain
You can’t run agentic payments if every fee and settlement is globally visible.

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Why Fairblock

Performance

Sub-second client-side. Lightweight cryptography runs on the user side without introducing latency or external proving infrastructure.

Decentralization

No trusted hardware. The system does not rely on TEEs, trusted coprocessors, or centralized proving services.

Usability

No new wallets or keys. End users interact with their existing wallets. Keys are derived on demand, never stored.

Compliance

Selective disclosure. Confidentiality-by-default with controlled, post-execution access for authorized parties.
Confidential stablecoins overview

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Join Confidential Builders Program

Apply to build on Fairblock’s Stabletrust SDK and pioneer the next generation of confidential transfers. https://build.fairblock.network/

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Next Steps

Architecture

Understand the cryptographic design powering confidential transfers.

Quick Start

Start building with the Stabletrust SDK.