Polkadot

Polkadot (DOT) is a unique PoS cryptocurrency aimed at delivering interoperability among other blockchains. Its protocol is designed to connect permissioned and permissionless blockchains as well as oracles to allow systems to work together under one roof. Polkadot’s core component is its relay chain, which allows the interoperability of varying networks. It also allows for parachains, or parallel blockchains with their own native tokens for specific-use cases.16

Where Polkadot differs from Ethereum is that rather than creating just dApps on Polkadot, developers can create their own blockchain while also using the security that Polkadot’s chain already has. With Ethereum, developers can create new blockchains but need to create their own security measures, which can leave new and smaller projects open to attack because the larger a blockchain, the more security it has. This concept in Polkadot is known as shared security. 

Polkadot was created by Gavin Wood, another member of the core founders of the Ethereum project who had differing opinions about the project’s future. As of March 14, 2022, Polkadot has a market capitalization of roughly $17.4 billion, and one DOT trades for $17.59.17