Bitcoin vs Polkadot

Which is more decentralized — Bitcoin or Polkadot? A side-by-side on consensus, nodes, clients and governance.

	Bitcoin	Polkadot
Grade	B+	A-
Type	L1 · PoW	L1 · NPoS
Nakamoto coefficient	~2–3*	50+
Node / validator set	~20,000+ reachable full nodes	~300–600 validators
Clients / sequencer	Bitcoin Core dominant; alternatives exist	Multiple implementations (Polkadot SDK)
Governance	No formal governance (BIP + social consensus)	Fully on-chain (OpenGov)
Key risk	Mining-pool concentration	Nominator concentration

Bitcoin B+

Largest reachable full-node set
No foundation / no on-chain governance to capture
Maximally credibly neutral

Mining hashpower concentrated in a few pools
Bitcoin Core client dominance

Polkadot A-

High Nakamoto coefficient (50+)
Fully on-chain governance (OpenGov)
Broad, rotating validator set

Nominator stake can concentrate
Complex multi-chain security model

Bottom line

Unmatched on node-level and political decentralization; mining-pool concentration is the asterisk. Elite on governance decentralization; strong on consensus.