Polkadot (DOT) is a Layer 1 network built to be an 'internet of blockchains' — instead of one chain doing everything, it lets many specialized chains (called parachains) run in parallel and talk to each other securely, all sharing the security of a central 'relay chain'. The pitch is that projects can launch their own custom chain without building security from scratch. It was created by Gavin Wood, one of Ethereum's co-founders, which gives it deep technical credibility. DOT is the token used for staking (securing the network), governance (holders vote on everything) and buying access to network resources for parachains.
Where it stands today: Polkadot's technology is arguably stronger than ever — its 'Polkadot 2.0' overhaul is live, making it easier and more flexible for projects to buy blockspace, and a future upgrade called JAM aims to turn it into a giant decentralized computer. It has 65+ active chains and hundreds of developers. Crucially, in March 2026 it reset its tokenomics: DOT now has a Bitcoin-like hard supply cap (2.1 billion), cut new issuance by over half, and burns a large share of network-resource sales. Yet despite all this, DOT trades down more than 90% from its 2021 peak, with the market's big question being whether the strong tech will ever translate into usage and demand. So today it's a technically respected network fighting a 'great tech, where are the users' perception.