Circle, the company behind the popular USDC stablecoin, has announced the launch of USDCx on Aleo's testnet.

This new digital currency brings bank-level privacy to blockchain payments while keeping full regulatory compliance.

The December 9, 2025 announcement marks a major step toward solving privacy concerns that have kept big banks and institutions away from using blockchain technology for payments.

Revolutionary Privacy Technology

USDCx runs on Aleo’s blockchain, which uses zero-knowledge proofs to keep transaction details hidden from the public. Unlike regular stablecoins where anyone can see wallet addresses and payment amounts, USDCx protects sensitive financial information.

“Most blockchain transactions lack the ability to support private transactions, leaving identity and financial data publicly exposed,” said Kash Razzaghi, Chief Commercial Officer at Circle. The launch pairs “high-quality reserve assets with on-chain visibility and privacy.”

However, the privacy isn’t complete. Circle can still access a “compliance record” for each transaction. This means law enforcement and regulators can get information when needed, but regular users cannot see private business dealings.

Source: @AleoHQ

The technology works through Circle’s new xReserve platform, which lets blockchain teams create USDC-backed stablecoins. Each USDCx token is backed one-to-one by real USDC held in Circle’s smart contracts.

Solving Real Business Problems

The privacy features target specific problems that businesses face when using public blockchains. Companies worry about revealing sensitive information like employee salaries, customer data, or business strategies.

USDCx enables several key use cases:

Global Payroll: Companies can pay workers worldwide without showing internal salary structures to competitors.

Aid Distribution: Humanitarian groups can send money to people in dangerous areas without exposing recipients to targeting risks.

Business Payments: Online stores can settle purchases while protecting customer shopping habits and pricing strategies.

International Transfers: People can send money privately while keeping the speed and low costs of stablecoins.

Technical Innovation Behind the Scenes

Circle’s xReserve platform solves a long-standing problem with stablecoins across different blockchains. Currently, bridged versions of USDC don’t work well with the original USDC, creating confusion and risk for users.

The xReserve system uses special cryptographic proofs called attestations. When someone deposits USDC, the system creates a proof that lets partner blockchains create equivalent tokens. Cross-chain transfers work through a burn-and-mint process that keeps the total supply properly backed.

This approach removes the need for third-party bridges, which often create security risks and trust issues. Instead, Circle directly manages the backing reserves through its own smart contracts.

Market Timing and Competition

The launch comes at a favorable time for stablecoins. Circle became the first major stablecoin company to comply with Europe’s new MiCA regulations in July 2024. The U.S. also passed the GENIUS Act, creating clearer rules for payment stablecoins.

USDC’s growth has been strong, with its circulation growing 78% in 2024 from $24.4 billion to $43.9 billion. This shows increasing demand for regulated stablecoin infrastructure.

Aleo raised $28 million in 2021 from major investors including a16z and Coinbase Ventures, followed by a $200 million Series B round in 2022 from SoftBank and other investors. The company launched its mainnet in September 2024 after years of development focused on privacy technology.

Circle is also building its own blockchain called Arc, designed specifically for stablecoins. This shows the company’s commitment to expanding stablecoin infrastructure beyond traditional blockchains.

What Comes Next

USDCx has been announced for Aleo’s testnet, letting developers experiment with privacy-focused applications once it becomes available. The mainnet launch is expected by the end of January 2026.

Aleo is the second blockchain to use Circle’s xReserve platform, following Canton Network’s integration last week. This suggests Circle plans to expand the technology to more blockchain partners.

For institutions that have avoided blockchain technology due to transparency concerns, USDCx offers a middle path. They can use blockchain’s benefits like fast settlement and global reach while protecting sensitive business information.

The Privacy Revolution Begins

USDCx represents more than just another stablecoin launch. It signals blockchain’s evolution from experimental technology to practical business infrastructure that respects privacy needs.

As Leena Im, Aleo’s Chief Operating Officer, explained, this development “signals a broader interest in privacy-first blockchain architecture, much like the internet’s move from HTTP to HTTPS.” Just as secure web browsing became the standard, private blockchain transactions may soon become normal for business use.