Bitcoin developer Chris Guida has prepared code that could swap the mining algorithm on a breakaway BIP-110 chain. It's a contingency plan for a scenario where the soft fork's supporters get left on a weak minority chain that stops producing blocks. The code comes as the activation height for BIP-110 approaches and miners keep resisting the change.
Why a PoW swap
If BIP-110 doesn't win over miners, the chain could stall. Supporters have been openly floating the idea of a proof-of-work swap as a way to keep the chain moving. Guida's code would let the breakaway chain change its mining algorithm, so it wouldn't depend on the miners who oppose the fork.
That's not a hypothetical. The activation height is close, and miner resistance has been consistent. Without a fallback, supporters could end up on a chain that grinds to a halt.
The miner standoff
The soft fork has a real problem: miners don't want it. The activation height is approaching quickly, which raises the stakes. If miners don't come around, BIP-110 supporters would be stuck on a chain that isn't getting blocks.
That's where the swap comes in. By changing the proof-of-work algorithm, the chain could attract different miners or run on different hardware. It's a way to bypass the current mining power entirely.
What the code does
Guida has the code written and ready. It's designed to swap the mining algorithm on the breakaway BIP-110 chain, a move that would let the chain continue even if the current miners walk away. The details of how the swap would execute haven't been laid out publicly, but the intent is clear.
Supporters aren't committing to using it yet. They're floating it as an option, keeping it on the table if the activation height passes without enough miner support.
The activation height is the next big moment. If miners fall in line, BIP-110 proceeds as a normal soft fork. If not, Guida's code becomes a real option. Whether it gets deployed depends on how the standoff plays out in the coming weeks.
