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Evolution of Bitcoin Privacy: From Stealth Addresses to Silent Payments
The chapter explores the progression of Bitcoin privacy-enhancing techniques from stealth addresses to the current concept of silent payments, emphasizing the trade-offs between computation and on-chain space efficiency. It discusses the challenges faced by previous proposals like BIP-47, emphasizing the need for more space-efficient solutions in the evolving landscape of Bitcoin transactions. The conversation also highlights the benefits of silent payments, including simplified user experiences and enhanced privacy measures through static QR codes and a Bitcoin username concept.