Bitcoin privacy solutions have achieved a major breakthrough, with BIP352 silent payment technology officially implemented.

Many people encounter a problem when using Bitcoin: repeatedly using the same address to receive payments makes transaction information easy to track. Silent payment is designed to solve this issue. This scheme is based on the BIP352 standard, with the core innovation being: users only need a single public key address but can generate unlimited receiving addresses for payments, and the balance and transaction records are completely hidden from external view.

This concept actually has historical roots. The idea of stealth addresses was proposed as early as 2012, but at that time, the implementation required recording data on the blockchain, which was costly and easily identifiable. Later, the BIP47 protocol was introduced, which improved some aspects but required multiple notification transactions, making operations cumbersome and potentially exposing the sender's identity. Silent payment generates a unique receiving address through cryptographic methods, visible only to the sender and receiver, truly solving the core problem.

The usage is quite simple. Users generate an SP code (starting with sp1, containing two public keys), and the recipient can directly scan the wallet QR code to make a payment. However, there's a small detail: the recipient needs to scan a Taproot transaction to confirm receipt. Currently, wallets like Cake Wallet and BitBox have already started supporting this feature.

Another thoughtful design is the tagging function. By adding labels to receiving addresses, users can distinguish between different payment sources, making it especially suitable for scenarios like exchanges and charitable organizations that need to manage multiple funding channels. Privacy and practicality are unified here.