Bitcoin decentralization questioned: PoW may centralize
Ripple CTO Emeritus David Schwartz says Bitcoin’s decentralization does not come from Proof-of-Work (PoW); instead, PoW can be a centralizing force that Bitcoin must “keep fighting against.” The comments follow concerns from XRPL validator “Vet” about mining concentration.
Vet noted that Foundry USA, the largest Bitcoin mining pool, mined 7 consecutive blocks, triggering a chain reorganization involving Antpool and ViaBTC. Such reorgs highlight weaker transaction finality and raise the risk of selfish mining, where a large miner withholds blocks to gain advantage. Vet also said Foundry USA’s hashrate is near academic thresholds for selfish mining profitability, implying large pools could exploit the system if incentives align.
Schwartz framed this as a dilemma: changing Bitcoin’s mining algorithm could imply Bitcoin’s immutability is not fixed, while leaving PoW unchanged may over-rely on miners acting in good faith. He suggests the community may accept the risk for now, but must continuously work to preserve decentralization.
Bitcoin’s PoW model relies on the longest chain after mining competition, while the XRP Ledger uses the Ripple Protocol Consensus Algorithm with fast final settlement via a supermajority of validators—an architecture Vet argues avoids the same reorg weakness.
Neutral
The article is more of a protocol-structure and mining-incentives debate than a direct catalyst (no stated change to Bitcoin code or immediate network upgrade). That said, it spotlights potential centralization signals: Foundry USA mining 7 consecutive blocks and the resulting reorg with Antpool and ViaBTC. Historically, when traders see reorgs, mining-pool dominance, or “selfish mining” narratives, price impact is usually limited and sentiment-driven rather than fundamentals-driven, often resolving with no immediate action.
Short term, this may add caution to Bitcoin-related positioning (some traders may hedge ahead of volatility if they fear reorg/finality concerns). Long term, if such concentration trends continue, it could strengthen the case for governance discussions around mining incentives or algorithm adjustments—an event that could become more market-relevant later.
Overall, the news is likely to influence perception and risk premium modestly, but without a concrete network change it’s best categorized as neutral for trading impact.