The “blockchain of blockchains” Polkadot ($DOT) is currently the leading cryptocurrency network by development activity, and it’s followed by Kusama ($KSM), a public pre-production environment for it, and by smart contract platform Cardano ($ADA). That’s according to data from on-chain analytics firm Santiment, Polkadot has managed to maintain its position as the leading cryptocurrency in For Further Information Click on Below Button