Quantum-resistant cross-chain privacy using threshold signatures and time-delayed withdrawals
Deposit any amount of ETH, USDC, BTC, or other supported tokens across multiple chains. Your deposit is public - this is where the trail ends.
DKG nodes verify your deposit and generate quantum-resistant WOTS keys. You receive keys for standard denominations matching your deposit amount and token type.
Use your keys to withdraw from completely different wallets at any time, even on different chains. Each withdrawal is unlinkable to your original deposit.
Built with WOTS (Winternitz One-Time Signatures) to remain secure even against future quantum computers.
No single point of failure. Threshold signatures require multiple DKG nodes to collaborate.
Withdraw to any wallet, at any time. No on-chain link between deposits and withdrawals.
Deposit on Ethereum, withdraw on Polygon. Support for all major chains and L2s.
Privacy for ETH, USDC, USDT, BTC, and any ERC-20 token. More tokens added regularly.
Automatic denomination optimization for each token type to maximize anonymity sets.
Umbra combines cutting-edge cryptography with practical privacy design
First practical implementation of threshold signatures for Winternitz OTS, enabling distributed trust without compromising quantum resistance.
Seamlessly move value between chains while maintaining complete privacy. Deposit on one chain, withdraw on another.
Smart denomination algorithms optimize privacy for any token, from stablecoins to governance tokens.