Polkadot topped decentralization charts on July 17, 2026, scoring a Nakamoto Coefficient of 166, the highest among major blockchains. The network's score of 166 surpassed competitors including Solana (18), Cardano (15), Bitcoin (3), and Ethereum (1). This metric highlights Polkadot's validator decentralization and strong attack resistance, reinforcing its core value proposition of robust, decentralized security for its parachains.