A Look at Mintlayer: Layer 2 Sidechain for the Bitcoin Network
Mintlayer is a Layer 2 sidechain for the Bitcoin network that aims to bring decentralized finance, NFTs, dapps, and smart contracts to Bitcoin. The protocol uses the UTXO standard and has a token classification for NFTs that will run on the sidechain without bloating the main network.
https://hackernoon.com/a-look-at-mintlayer-layer-2-sidechain-for-the-bitcoin-network