Bitcoin faces a miner reward problem, Avalanche founder warns
10 May 2026 · 09:37 UTC · Crypto.News RSS Feed · Original source
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Summary
Avalanche founder Emin Gün Sirer has warned that Bitcoin's shrinking miner rewards represent a more significant risk to network security than quantum computing threats or competing cryptocurrencies. The concern focuses on Bitcoin's halving mechanism, which reduces block rewards every four years, eventually requiring miners to rely entirely on transaction fees for compensation. Sirer highlights the structural challenge of maintaining adequate network hashrate and security as rewards diminish over decades.
Why it matters
Bitcoin's protocol includes halvings every four years, reducing block rewards by 50% until approaching zero around 2140. The fundamental concern is whether transaction fees alone will sustain adequate network hashrate and security at that point. Key drivers of market impact: (1) Credibility of source amplifies visibility of a legitimate technical debate; (2) Sentiment shift from bearish framing of structural risk; (3) Renewed focus on long-term economic model sustainability. Moderating factors: (1) Current miner economics remain profitable with existing fees; (2) Timeline is extremely distant; (3) Technological solutions may emerge (improved efficiency, layer-2 scaling reducing main-chain demand); (4) Bitcoin's utility and fee sustainability depend on adoption trajectory. This represents a known issue in Bitcoin development discourse, not new information, so impact derives from perception amplification rather than revelation. Bitcoin is more directly affected than altcoins. Confidence decreases with longer timeframes due to increased technological and adoption uncertainty.
Expected impact
Emin Gün Sirer's warning about Bitcoin's declining miner rewards amplifies structural concerns about long-term network security and mining economics. As Bitcoin's halving schedule reduces block rewards over time, the sustainability question centers on whether transaction fees will adequately compensate miners in the future. While this is a known theoretical challenge in Bitcoin's design, public commentary from a respected figure like Sirer can shift market perception of technical risk. Near-term price impact would be primarily sentiment-driven rather than fundamental, as the critical timeline remains years to decades away. Bitcoin would likely experience more direct pressure than altcoins, which would see secondary spillover effects through broader risk-off sentiment. The bearish tone could suppress short-to-medium term trader confidence in Bitcoin's long-term viability narrative, though fundamental valuations already incorporate this structural feature.