Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &

Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &
Key item features Ultimate Security: Generates a private key that remains on the card, safeguarding crypto and NFTs from hackers with EAL6+ certification and audited firmware. Versatile Compatibility: Manages over 13,000 tokens across 70+ blockchains, supporting DeFi, NFTs, and DeEx without wires, Bluetooth, or USB. Effortless Operation: Utilizes NFC for secure transactions via a mobile device and the Tangem app, enabling buying and selling crypto with various payment methods. Smart Backup: Features a second Tangem Wallet as a backup, eliminating the need for paper, pictures, or seed phrases for recovery. Durable Design: Boasts IP68 protection against environmental conditions, ensuring longevity and robust physical security. Comprehensive Support: Compatible with Bitcoin, Ethereum, Solana, XRP, USDT, and over 6,000 cryptocurrencies, integrating with dApps and WalletConnect.

LBANK

LBANK

Does Silent Payments require the sender's input public key to be recoverable from the transaction?

When I implemented a Silent Payments send on testnet, I used a Taproot key-path spend as input. In that case, the sender's public key is directly readable from the witness.

But I'm not sure this holds for all input types. For example, in a P2WPKH input the pubkey is in the witness, but for a Taproot script-path spend it may not be directly recoverable.

Does BIP352 require the sender's input pubkey to be recoverable? And if the sender uses an input type where the pubkey is not visible, does the protocol break down?



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