Miden Bets on Privacy-Focused Stablecoins with the Introduction of USDCx

cryptonews.ruPublished on 2026-08-13Last updated on 2026-08-13

Abstract

Miden, a zero-knowledge blockchain, is launching a privacy-focused stablecoin called USDCx alongside its mainnet in late August. Backed 1:1 by Circle’s USDC via Circle’s xReserve infrastructure, USDCx will allow users to store and transfer funds without publicly revealing balances, transaction history, or counterparties. The network, which processes and proves transactions on user devices, aims to provide default privacy with optional disclosure for compliance. Miden targets institutional finance use cases—such as private trading, B2B payments, and treasury management—addressing the transparency limitations of public blockchains while maintaining programmability and verifiability. The project, formerly part of Polygon and now independent, is backed by investors including a16z crypto and 1kx.

Miden plans to launch a privacy-focused stablecoin backed by $USDC from Circle Internet, coinciding with the launch of its zero-knowledge blockchain mainnet.

"USDCx, issued on the Miden platform using Circle's xReserve infrastructure, will be backed 1:1 by Circle's stablecoin held in an xReserve smart contract," the company stated in a press release on Wednesday.

Users will be able to hold and transfer USDCx without publicly revealing balances, counterparties, or transaction history.

The stablecoin is expected to launch simultaneously with the Miden Network, which is scheduled to go live by the end of August.

Miden is a California-based, client-proven zero-knowledge blockchain where transactions are executed and proven on users' devices, rather than being disclosed on the network. The goal of this architecture is to provide applications with privacy by default, allowing users to selectively disclose information when necessary.

The product aims to address one of the biggest challenges of using public blockchains for institutional finance: transparency.

The network's goal is to deliver privacy without compromising regulatory compliance. The selective disclosure system allows users to prove balances, provenance, or other information to auditors, regulators, and counterparties as needed.

Privacy has become a key barrier to moving more financial activity onto the blockchain. Public blockchains by default reveal transaction history, balances, and counterparty information, creating a level of transparency that is difficult to reconcile with how businesses and financial institutions operate.

Trading firms do not want to disclose positions, companies cannot broadcast salary and treasury activities, and individuals may not want their financial lives visible on a block explorer. Privacy infrastructure is meant to bring the confidentiality of traditional finance to the blockchain while preserving the programmability and verifiability of crypto.

Stablecoins are cryptocurrencies designed to maintain a stable value, typically by tracking the U.S. dollar. They have become a key component of crypto infrastructure, providing a bridge between traditional money and blockchains, enabling faster payments, trading, and settlement without the volatility of assets like Bitcoin or Ethereum.

Miden sees USDCx as the foundation for a broader category it calls "PriFi," encompassing private institutional trading, B2B payments, payroll settlement, cross-border payments, and corporate treasury management.

The company spun off from Polygon as an independent project in April 2025 and is backed by a16z crypto, 1kx, Hack VC, and others.

Related Questions

QWhat is USDCx, and how is it backed?

AUSDCx is a privacy-focused stablecoin launched by Miden. It is backed 1:1 by Circle's USDC stablecoin, which is held in an xReserve smart contract using Circle's xReserve infrastructure.

QWhat is the main goal of the Miden Network's architecture?

AThe main goal of Miden Network's architecture, which is a zero-knowledge (zk) blockchain based on client-side proof, is to provide applications with privacy by default. It allows users to selectively disclose information when necessary, aiming to offer privacy without compromising regulatory compliance.

QWhat major challenge in public blockchain usage for institutional finance does Miden aim to address with its product?

AMiden aims to address the challenge of transparency. Public blockchains by default reveal transaction history, balances, and counterparty information, creating a level of transparency that is difficult to reconcile with how businesses and financial institutions operate.

QWhat broader category does Miden envision for USDCx, and what use cases does it include?

AMiden envisions USDCx as a foundation for a broader category it calls 'PriFi' (Private Finance). This category includes private institutional trading, B2B payments, payroll settlement, cross-border payments, and corporate treasury management.

QWhen is the Miden Network mainnet launch expected, and what is its relation to Polygon?

AThe Miden Network mainnet launch is expected by the end of August. Miden spun off from Polygon as an independent project in April 2025.

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