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

What does the BIP86 tweak guarantee in a MuSig2 Lightning channel, beyond address format?

In a single-signer Taproot address, the BIP86 tweak has a clear meaning: the output commits to no script tree, only a key path.

But in a two-party MuSig2 channel, I think it does something extra. Without the tweak, Alice could in principle embed a hidden script path into the funding output — one that lets her spend unilaterally. If both sides independently apply the BIP86 tweak and verify the resulting output key matches, it is effectively a mutual confirmation: "nothing is hidden in this output."

So my question: in a MuSig2 channel context, is this the intended security guarantee of BIP86 — preventing the counterparty from embedding a hidden script path? Or does the channel protocol have separate mechanisms that already cover this?



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