> Ephemeral Key Protocol
A fresh key for every transaction.
FORS signatures give your wallet the fastest signing time at the lowest
onchain gas cost. Key rotation runs automatically on every move, so you
never manage a thing. A SPHINCS signature keeps your account
recoverable at all times, with nothing for you to do.
A new key for every move.
Each transaction signs with a freshly generated key pair. The moment it signs, the wallet rolls its onchain commitment forward to the next key, so the one that just signed is spent and never signs again.
Generated per transaction
A fresh key pair for every operation, never reused.
Hash-based by design
Security from preimage resistance, with no algebraic structure to attack.
FORS signatures
Fast to verify and compact onchain, quantum-hard at NIST Level 1.
One address on Ethereum and every L2.
Your account holds the same address on Ethereum mainnet and every EVM L2. The keys underneath rotate every move, the address never does.
Stable multichain address
The same account address on Ethereum and every EVM chain.
Works with the apps you already use.
Stake on Lido, trade on CoW Swap, and connect to dapps.
Ships as a browser extension
Install it like any extension and sign like any wallet. The post-quantum work stays under the hood.
>Demo Video
Take a Look
Watch the wallet in action. From key generation to transaction signing and DeFi, in under 3 minutes.
>Browser Extension
Install NiceTry.
- 1.Download & unzip the extension
- 2.Open
chrome://extensionsand enable Developer mode - 3.Click “Load unpacked” and select the folder
Current Version: v2.1.0
>Get Involved
Help us break it.
Join the Telegram
Connect with early testers, report bugs, and follow development in real time.
Read the Code
The full source is open. Audit the key implementation, fork it, or contribute.
Open the Docs
Detailed technical documentation covering the ephemeral key architecture.