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Gustavo notes that LND 0.21.0 beta includes production support for simple taproot channels and introduces fast initial synchronization for neutrino nodes.
Jeffrey offered a steelman argument for opponents of restricting taproot: the 'OP_IF' bug enabling inscriptions is a minor mistake. Keeping it provides on-chain activity, and the spam may be naturally priced out by fees, making a corrective fork not worth the effort.
Surge offers a Bitcoin-backed line of credit with no KYC and a self-custody design using Taproot smart contracts. Users provide Bitcoin collateral at approximately 50% loan-to-value and can choose between variable (~6%) or fixed (9.99%) interest rates.
The Surge Taproot contract has three spending paths: mutual loan closure, automated liquidation if collateral drops, and a unilateral exit if counterparties disappear after one year.
Surge uses a numbs cryptography technique to prove no hidden spending paths exist in its Taproot contracts, ensuring users can verify their Bitcoin isn't secretly rehypothecated.
Surge employs an MPC-based signer network as a communication layer between Bitcoin Taproot contracts and Base smart contracts to coordinate loan settlements.
DK argues that 'bring your own wallet' integration is crucial for Surge to attract larger Bitcoin holders who won't move significant amounts to a mobile app, though it requires wallet support for Taproot smart contracts.
LND fixed a bug where nodes would erroneously try to open public simple taproot channels, which fail as the spec lacks announcements. Channels now downgrade to anchor or legacy types unless explicitly requested as private.
Mempool.space v3.3.0 adds Taproot script tree visualizations, PSBT previews, improved fee estimation, ephemeral dust support, SIG hash icons, and stale block comparisons.