🚨HUGE: Bitcoin could get Zcash-style PRIVATE transfers without a soft fork, a new paper proposes. "Shielded Bitcoin" is a new protocol that would hide the amount, sender and receiver of each transfer directly on Bitcoin, while zero-knowledge proofs keep every transfer verifiable. The whitepaper says Bitcoin's transaction history is permanently public, and chain analysis can often link addresses to their owners. With Shielded Bitcoin, users could still share view-only keys with auditors to prove payments