Shielded Bitcoin Protocol Introduced for Enhanced Privacy
- Researchers at [[alloc] init] have proposed a protocol for private transfers on the Bitcoin base layer, inspired by Zcash’s encrypted notes and zero-knowledge proofs.
- The design does not require changes to Bitcoin’s consensus rules and uses encrypted “notes” with zero-knowledge proofs to ensure privacy.
- Transfers are published as data on Bitcoin, verified by separate software called indexers, while maintaining public visibility of timing, fees, and transaction size.
- A separate paper will address mechanisms for moving BTC into and out of the shielded system using Bitcoin PIPEs v2.
The Shielded Bitcoin protocol aims to enhance privacy in transactions by hiding sender, recipient, and amount details while operating within the existing Bitcoin network framework. This approach leverages Zcash’s technology without altering core Bitcoin rules.
By utilizing zero-knowledge proofs and encrypted notes, Shielded Bitcoin offers a method to conduct private transactions while ensuring that double-spending is prevented through public markers called nullifiers. Source
