Avalanche creator Emin Gün Sirer took to X on May 10 to sound an alarm about Bitcoin's long-term security. The issue: Bitcoin's built-in halving system cuts mining rewards roughly every four years, squeezing miner profit margins. Fewer miners, Sirer argues, could lead to a more centralized network and real security vulnerabilities. His proposed fix? Layering in Avalanche tech to take pressure off Bitcoin's core chain.
Why the halving cycle is a problem
Miners keep Bitcoin's ledger secure by burning through energy – it's expensive work. In return they get freshly minted BTC plus transaction fees. But every halving chops that block subsidy in half. The next one, expected in 2028, will drop the reward to 1.5625 BTC. Each cut makes it harder for smaller miners to stay profitable, pushing operations toward big players with access to cheap power.
Sirer warned that this dynamic could lead to “reduced miner participation, increased network centralization risks, and potential security vulnerabilities.” He didn't mince words: the current incentive structure isn't built to last forever.
The Avalanche bridge proposal
Rather than just flagging the problem, Sirer offered a solution: bolt an extra transaction layer onto Bitcoin using Avalanche technology. The idea is to handle a chunk of Bitcoin's transaction load off the main chain, reducing congestion and fee pressure. That could let miners rely less on volatile transaction fees for revenue, smoothing out the economics of the halving drop.
But Sirer knows the pitch is a long shot. Bitcoin's developer and community have historically swatted away proposals that involve outside chains or major protocol changes. Past attempts to add sidechains or tweak consensus have met fierce resistance.
Bitcoin's walled garden
The core question isn't technical — it's political. Bitcoin's ethos prizes simplicity and conservatism. Any change that looks like importing another chain's tech triggers immediate pushback. Sirer is essentially asking the community to trust a competing ecosystem's infrastructure. That's a tough sell.
No official response from Bitcoin Core developers or major mining pools has surfaced since Sirer's post. But the silence itself says something. The halving clock keeps ticking, and the economics won't get easier with time.
