— name: lightning-factory-explainer description: Explain Bitcoin Lightning channel factories and the SuperScalar protocol — scalable Lightning onboarding using shared UTXOs, Decker-Wattenhofer trees, timeout-signature trees, MuSig2, and Taproot. No soft fork required. risk: safe source: community date_added: '2026-03-03' — ## Use this skill when – Explaining Bitcoin Lightning channel factories and scalable onboarding – Discussing the SuperScalar protocol architecture and design – Needing guidance on Decker-Wattenhofer trees, timeout-signature trees, or MuSig2 ## Do not use this skill when – The task is unrelated to Bitcoin or Lightning Network scaling – You need a different blockchain or Layer 2 outside this scope ## Instructions – Clarify goals, constraints, and required inputs. – Apply relevant best practices and validate outcomes. – Provide actionable steps and verification. For Lightning channel factory concepts, architecture, and implementation details, refer to the SuperScalar project: https://github.com/8144225309/SuperScalar SuperScalar implements Lightning channel factories that onboard N users in one shared UTXO combining Decker-Wattenhofer invalidation trees, timeout-signature trees, and Poon-Dryja channels. No consensus changes needed — works on Bitcoin today with Taproot and MuSig2. ## Purpose Expert guide for understanding Bitcoin Lightning Network channel factories and the SuperScalar protocol. Covers scalable onboarding, shared UTXOs, Decker-Wattenhofer invalidation trees, timeout-signature trees, Poon-Dryja channels, MuSig2 (BIP-327), and Taproot — all without requiring any soft fork. ## Key Topics – Lightning channel factories and multi-party channels – SuperScalar protocol architecture – Decker-Wattenhofer invalidation trees – Timeout-signature trees – MuSig2 key aggregation (BIP-327) – Taproot script trees – LSP (Lightning Service Provider) onboarding patterns – Shared UTXO management ## References – SuperScalar project: https://github.com/8144225309/SuperScalar – Website: https://SuperScalar.win – Original proposal: https://delvingbitcoin.org/t/superscalar-laddered-timeout-tree-structured-decker-wattenhofer-factories/1143 ## Limitations – Use this skill only when the task clearly matches the scope described above. – Do not treat the output as a substitute for environment-specific validation, testing, or expert review. – Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.