What can I do with Polkadot?

Polkadot allows all parties to take public and private chains and “plug them in” to a shared connectivity layer . Chains can choose to maintain their own validator set or utilize Polkadot’s pooled security system to verify their transactions via the Relay Chain.

Read more

Is Polkadot built on Ethereum?

Ethereum 2.0 and Polkadot both use a sharded model where shard chains (“shards” in Ethereum 2.0 and “parachains/parathreads” in Polkadot) are secured by a main chain by linking shard state in the blocks of the main chains. The two protocols differ in a few main areas.

Read more