What is Polkadot (DOT)?

Polkadot crypto refers to the Polkadot network and its native token, DOT. Polkadot is designed so that many specialized blockchains can run side by side while sharing one set of validators for security. Those validators sit on a central chain called the relay chain, and the connected chains are called parachains.

Who created Polkadot?

Polkadot was conceived by Gavin Wood, who was also an Ethereum co-founder. The Defiant reports that its whitepaper came out in 2016, the relay chain produced its genesis block in May 2020, and the first parachains went live in December 2021. It names Robert Habermeier and Peter Czaban as Wood's co-founders.

Web3 Foundation's 2020 introduction to Polkadot says the foundation commissioned Parity Technologies to build the network. Parity was founded by Wood and Jutta Steiner, a former head of security at the Ethereum Foundation.

How do Polkadot parachains work?

The Polkadot Wiki describes the relay chain as deliberately minimal. It handles block production, scheduling of execution cores, data availability and shared security. Everyday features like accounts, transfers and staking have moved to Asset Hub, a system parachain sometimes called Polkadot Hub.

Parachains are full blockchains that run on those cores. Their own nodes, called collators, produce blocks, and relay chain validators check them. Because all parachains rely on the same validator set, they share its security. The trade-off is that if the relay chain ever reverted, every connected parachain would revert with it.

To run, a parachain buys coretime with DOT. It can hold a permanent core or buy time on demand, and it can switch between those models.

How does Polkadot staking work?

Polkadot uses nominated proof of stake. Validators run nodes and produce blocks, while nominators bond DOT behind validators they choose. The network spreads stake across the elected validators automatically. Rewards are paid per era, which lasts 24 hours on Polkadot, and validators take a commission before nominators get their share.

Staking carries real risks. Both validators and nominators can be slashed for misbehavior. The minimum bond needed to earn rewards changes over time, and the Wiki notes that nomination pools let people join with as little as 1 DOT. Rewards must be claimed on Polkadot Hub, and unclaimed rewards are lost after 84 eras. Bonded DOT also has an unbonding period before it can be moved. See what crypto staking is for the basics.

How is Polkadot different from Ethereum?

Ethereum runs most apps on one shared main chain, and many apps scale through layer 2 rollups. Polkadot instead lets each project run its own chain with its own rules, while borrowing security from the relay chain. Both use proof of stake, but Polkadot's design centers on many connected chains rather than one execution layer.

As of October 2026, DOT's three core uses listed by the Polkadot Wiki are staking, governance and buying coretime.