# Miden Unveils a "PriFi" Stack Built on Client-Side Proving and a Private Token Backed by USDC

The stack centers on USDCx, which is backed one-to-one by USDC through Circle's xReserve, and on Bread, a self-custodial wallet that keeps balances and counterparties private by default.

- Published: 2026-10-22T05:48:52.369Z
- Canonical: https://polylog.news/crypto/2026-10-22/miden-unveils-a-prifi-stack-built-on-client-side-proving-and
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Miden](https://miden.xyz/prifi-stack), [Miden](https://miden.xyz/blog/bread-is-privacy-baked-in), [Edgen](https://www.edgen.tech/news/post/miden-to-launch-privacy-stablecoin-usdcx-backed-11-by-usdc)

Miden, a zero-knowledge blockchain based in California, announced its "PriFi" stack, a set of tools for private finance. The design relies on client-side proving. Users' own devices execute and prove transactions, so the network verifies a…

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