A contentious Bitcoin fork built around the BIP-110 proposal managed to produce just two blocks before grinding to a halt, a stumble that underscores the practical difficulties of launching a breakaway chain without meaningful mining support.
A Fork That Struggled Out of the Gate
The new chain split away from the main Bitcoin network but inherited the original blockchain's mining difficulty setting. That proved to be a crippling handicap, because only a sliver of the total network hashpower followed the fork. With so little computing power dedicated to it, the chain could not maintain a steady rhythm of block production.
Bitcoin's difficulty adjustment is designed for the enormous amount of mining power securing the main network. When a fork carries that same difficulty target but attracts only a fraction of the miners, blocks that would normally arrive roughly every ten minutes can stretch out for hours instead.
Inheriting Bitcoin's difficulty with almost no hashpower left the breakaway chain crawling to a near standstill after just two blocks.
Shared Transactions Complicate the Split
A further wrinkle is that both the original Bitcoin network and the BIP-110 chain continue to accept the same transactions. Because the two chains recognize overlapping activity, the separation between them is far from clean, raising questions about replay risk and the coherence of the forked network.
The episode highlights a recurring lesson in cryptocurrency: launching an alternative chain is far easier in theory than in practice. Without a critical mass of miners committing hashpower and a difficulty setting calibrated to that reduced power, a fork can quickly become effectively unusable.
Key takeaways from the stalled launch include:
- The fork produced only two blocks before stalling.
- It inherited Bitcoin's difficulty despite commanding minimal hashpower.
- Blocks arrived hours apart rather than at Bitcoin's usual cadence.
- Both chains still accept identical transactions, blurring the split.
For now, the BIP-110 experiment stands as a cautionary example of how mining economics can undermine even a determined attempt to break away from Bitcoin's dominant chain.