2026-01-19 13:37:51

When quantum computing eventually forces Bitcoin to upgrade its signing and address infrastructure, only one type of Layer 2 solution truly preserves Bitcoin's security model—the one where users retain the absolute right to exit back onto the main chain.

This is where the architecture matters most. A Bitcoin L2 that enforces user exits directly on Bitcoin creates a fundamentally different risk profile. BitVM2 demonstrates this approach: it's engineered around Bitcoin-based arbitration and enforceable settlement mechanisms. The security guarantees track Bitcoin's own cryptographic assumptions, which means the protocol upgrades alongside quantum threats the way Bitcoin itself does.

This isn't just a nice feature. It's the difference between a sidechain and genuine Bitcoin security inheritance.

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SchrodingersFOMO

· 12h ago

Still debating L2 architecture before the arrival of quantum... it's a bit funny, but they're right—having autonomous exit rights is indeed crucial. Not all L2s dare to play this way.

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SandwichHunter

· 12h ago

Quantum is here, and you can still run back to the main chain at any time. This is what a true Bitcoin L2 should look like; everything else is just showmanship.

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MevHunter

· 12h ago

ngl, the only true L2 is the one that can actually let users run away at any time; everything else is just a gimmick.

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