0x50af02a3…6560sent to0xb024ac5a…a016·#24,162,017·view on Etherscan
# Add Fairblock CUSD as an Approved Earner
Confidential USD (CUSD) is a stablecoin designed for confidential payments, while remaining compliance-ready through selective disclosure controls and traceability. It aims to deliver a digital cash experience for payments and transfers, where amounts and balances are encrypted, without forcing users to rely on volatile privacy coins or isolated privacy chains.
Privacy is powered by [Fairblock](https://fairblock.network/), a cryptographic execution layer built for dynamic confidential computing. Cryptographic operations such as homomorphic encryption, key generation, and ZKP verification run efficiently on Fairblock’s purpose-built chain, FairyRing. These capabilities can be accessed from confidential applications (cApps) deployed on FairyRing or on other major chains, allowing users to seamlessly utilize confidential functionality without the typical encryption delays, bridging funds, switching wallets, or compromising composability.
CUSD contributes to the M0 infrastructure and ecosystem by expanding distribution into privacy-sensitive payment flows, including payroll, payouts, treasury operations, commerce, cross-border remittances, and large strategic trades. These use cases are expected to drive sustained demand for CUSD and confidential applications more broadly.
CUSD is also the primary stablecoin powering [Stabletrust](https://stabletrust.io/), Fairblock’s confidential payments application. Stabletrust acts as a distribution engine for CUSD, and its permissionless integrations across DeFi ecosystems and applications accelerate early adoption and create structural demand.
In addition to built-in selective disclosure and traceability, which prevent the typical risks associated with mixers and exposure to illicit flows, CUSD integrates Predicate-authorized freezing mechanism across all supported chains. This mechanism enforces compliance with OFAC requirements and applicable sanctions regimes.
**Extension Name:** Confidential USD
**Extension Ticker:** CUSD
**Targeted Chains:** Ethereum, Arbitrum, Base, Solana, and leading payment networks such as Arc, Tempo, Noble, Stable
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