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Please move Mainnet funds off of Nyx V5 by October 19th so you don’t lose them.Funds left on Alpha V5 will be stuck once Aztec Alpha V6 goes live. We’ll give updates as dates for V6 are finalized.
Nyx users can join our Telegram group for support and important announcements.

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What is Nyx Alpha?

An Aztec v5 vulnerability that puts user funds at risk was recently found and more may be discovered. Only deposit what you can afford to lose.
Nyx and the Aztec blockchain it uses are both in alpha with the goal of adding features, improving the user experience, and catching and fixing vulnerabilities. We have two modes:
  1. Sepolia Testnet: Use to try out our features with no risk.
  2. Ethereum Mainnet: Aztec Alpha Mainnet carries inherent risk. We recommend treating any funds deposited here as experimental. Only use what you can afford to lose while we and Aztec work toward a stable release.
We encourage you to treat Nyx Alpha as an opportunity to test, give feedback, and help shape the direction of Nyx. There will be a required, simple version migration every couple of months during alpha. In the coming months, once Nyx and Aztec are more battle-tested, both will graduate to beta. Around this point we’ll raise or remove our Mainnet deposit limits (see next section).

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Mainnet deposit limits

We have deposit limits per connected Ethereum wallet of
  • 100 USDC
  • 100 USDT
  • 0.05 WETH
If you deposit 80 USDC, you can only deposit 20 more. When you withdraw to your connected public account, your deposit limit resets by that amount (up to the max of 100). When you send funds out to a different Ethereum address, your deposit limit does not reset (see table below for examples). Note: the table above shows USDC, but the same logic applies to USDT and WETH.

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How version migrations work

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Summary

Aztec plans to release a new, upgraded version of their Alpha Mainnet every few months. We’ve worked hard to make the process as seamless as possible for our users, including maintaining user passkeys and Ethereum contacts across versions and giving clear in-app guidance. We’ll announce the timing of migrations on Telegram and X, and update our in-app banner as well. Migrations, while annoying for the user experience, allow Aztec to make regular, substantial performance and security improvements. Thank you for your understanding during alpha.

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What you must to do before a new Aztec version is launched

Remove all assets. Approximately three weeks ahead of migrations, Aztec will bring the next proposed version to the governance process to vote on. At this time, security vulnerabilities in the current version will be exposed. Nyx users need to pull their funds out ahead of this date for the safety of their funds. We’ll post these dates on Telegram and X once Aztec posts about it on their X. Additionally, when a new version launches, the previous version of Nyx - which uses the previous version of Aztec - will become read-only, so asset removal will no longer work.

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What you must to do after a new Aztec version is launched

Create a Nyx private account on the new version of Aztec and add assets. These migrations involve deploying a private account for you on the updated Aztec version. As a result, your private account address is almost certain to change. Also, your contact book will become invalid because your contacts’ addresses will likely have all changed. You’ll need to re-add people after asking for their new address. Finally, you’ll lose your transaction history from the previous Aztec version. However, your passkeys and Ethereum contacts will carry over to your new account.