According to ChainCatcher, NULS has completed cross-chain integration and testing of BTC and ETH native assets, and plans to merge the code into the mainnet in the near future.

After the upgrade is completed, users can use BTC and ETH as gas fees on the NULS network. NULS nodes and Stakers will receive network gas fee income. This makes NULS the first public chain to support multiple assets as mainnet gas fees, marking an important innovation.