Joystream is a decentralized video platform and blockchain. It's powered by the native $JOY token. There's also the video dapp Atlas using the underlying Joystream blockchain, where you can upload videos to your channel, build up your subscriber count, sell your videos as NFTs, and even create your own token for your channel so that people can invest in you, and those token holders can earn a share of the revenue you generate, get early access to your videos, and all sorts of cool things that you control.