Just stay away because that s a crap coin
https://coinmarketcap.com/currencies/signature-chain/markets/This coin exist since 2018 and there was no even a single good result from the development progress. If you are looking for an opinion regarding it and that's a shitty project but if you are one of the advertisers from the signature chain i guess you will never hear that.
Literally 2 weeks ago mainnet release and you say there's no development progress. Development progress is what this project is amazing in, the roadmap has always been followed 1:1 with amazing progress, please like I said, actually take a look and don't judge it simply from coinmarketcap statistics.