# Privacy Chains Reframe Confidentiality as a Requirement for Serious On-Chain Use

Aztec and Miden are releasing live networks and tools, and the central question is now who controls the ability to turn privacy off.

- Published: 2026-06-19T10:30:25.546Z
- Canonical: https://polylog.news/crypto/2026-06-19/privacy-chains-reframe-confidentiality-as-a-requirement-for
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Aztec Network](https://aztec.network/blog/announcing-the-alpha-network), [Miden](https://miden.xyz/blog/practical-privacy), [Aztec Network (privacy off-switch)](https://aztec.network/blog/who-controls-your-privacy-off-switch)

The privacy-focused part of Ethereum's ecosystem is making a deliberate appeal to institutions. Aztec has announced an alpha network, and Miden has published its argument that practical privacy is the prerequisite for the next phase of bloc…

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