BRC-20 is an experimental token standard that runs on the Bitcoin network which will be released in 2023, but BRC-20 does not implement smart contracts like the Ethereum blockchain but in BRC20 it provides a mark/stamp on the smallest unit of Bitcoin (Satoshi), so that it can function to create NFTs and crypto tokens. Some famous BRC20 tokens such as: Ordi, Sats, Pups etc.