Polkadot is a cryptocurrency and blockchain platform, developed by Gavin Wood in 2020. It is an open source technology, which allows any given information to be exchanged between both the private blockchains, and public ones. The network is structured of Relay chains, responsible for security, Parachains, which are user-created chains that can manage specific operations and Parathreds, which connect Parachains. The chains can join other networks, such as Bitcoin or Ethereum, via Bridges.