# Privacy Rollups Aztec and Miden Pitch Confidential Finance to Institutions While Aztec Rebuilds for Quantum Risk After a Proving Flaw

Aztec has scheduled a full post-quantum migration by the end of 2030, after its own auditors found that its V5 proving system could accept invalid transactions, and Miden is assembling a private-stablecoin stack around Circle's USDCx.

- Published: 2026-10-29T05:42:25.188Z
- Canonical: https://polylog.news/crypto/2026-10-29/privacy-rollups-aztec-and-miden-pitch-confidential-finance-t
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Aztec Network](https://aztec.network/blog/post-quantum-aztec), [Aztec Network](https://aztec.network/blog/alpha-v5-proving-system-vulnerability), [Aztec Network](https://aztec.network/alpha-v5), [Miden](https://miden.xyz/prifi-stack), [Miden](https://miden.xyz/blog/bread-is-privacy-baked-in)

Aztec and Miden, two active privacy-focused Ethereum layer-2 networks, are competing for the same customer: institutions that will not put payroll, treasury and supplier payments on a public ledger. Both teams are also showing how much engi…

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