Cashu

Cashu enables the issuance, storage, and redemption of blinded ecash tokens backed by Bitcoin. It allows users to perform instant, private transactions that bypass traditional settlement delays while maintaining compatibility with the Lightning Network for broader ecosystem liquidity.

The protocol targets privacy-conscious individuals, Bitcoin enthusiasts, and developers building decentralized financial applications. It is designed for users requiring high-speed, low-cost microtransactions that prioritize anonymity and self-custody over traditional banking rails.

To operate a wallet, users require access to a compatible mint and a connection to the Lightning Network. The system relies on cryptographic blind signatures, meaning users must trust the mint to honor token redemptions while maintaining their own private keys for token management.