Solana requires 18 top validators to reach 33.4% of voting power. Bitcoin needs only three mining pools to cross its comparable disruption threshold. Solana’s separate risk is software concentration: about 92% of stake was running Agave/Jito in April 2025. https://cryptoslate.com/solana-beats-bitcoin-on-one-key-metric-but-a-single-software-bug-could-still-take-down-the-network/(CryptoSlate)