# Miden Launches a Private-Finance Stack Built on a Confidential Circle Dollar as Privacy Layer 2s Court Institutions

Miden's PriFi stack uses USDCx, a USDC-backed confidential stablecoin issued through Circle's xReserve, while rival Aztec is still shipping fixes from a critical proving-system flaw found by AI-assisted audit.

- Published: 2026-10-26T05:45:33.692Z
- Canonical: https://polylog.news/crypto/2026-10-26/miden-launches-a-private-finance-stack-built-on-a-confidenti
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Miden](https://miden.xyz/prifi-stack), [Miden](https://miden.xyz/blog/bread-is-privacy-baked-in), [Privacy Dispatch](https://privacydispatch.beehiiv.com/p/privacy-dispatch-introducing-prifi), [Aztec Network](https://aztec.network/blog/alpha-v5-proving-system-vulnerability), [Aztec Network](https://aztec.network/alpha-v5), [Aztec Network](https://aztec.network/blog/dark-forest-aztec-game-goes-live), [crypto.news](https://crypto.news/crypto-market-watch-worst-altcoins-bitcoin-price-80k/)

Miden, the zero-knowledge network that spun out of Polygon Labs, has announced its "PriFi" private-finance stack. The stack pairs stablecoins with privacy infrastructure so that financial applications can hide amounts and counterparties fro…

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