Ethereum testnet Ropsten semi-decentralized project Rocket accepts non-homogeneous tokens

A semi-decentralized project was launched on the Ethereum testnet Ropsten, and non-homogeneous tokens (NFT) can be used as collateral. Ethereum person Alex Masmej, who focuses on the dapps ecosystem, said that basically NFT was locked in a smart contract, and Rocket accepted the offer as dapp as collateral.