Or are there other checks in the SN server itself?

. So you can change it but I wouldn't recommend it since SN will still enforce the original 

bitcoin

Get a lightning address on your domain

nicosaporiti

> Or are there other checks in the SN server itself?

[Yes, there are](https://github.com/stackernews/stacker.news/blob/589b15b597980cf9eab2904a2a7df6284418971c/pages/api/lnurlp/%5Busername%5D/pay.js#L42). So you can change it but I wouldn't recommend it since SN will still enforce the original `minSendable`. You'll just make payments unreliable.