Seems like a nice project, definitely great that it’s a co-op. Compared to Mirlo, I like that Mirlo profiles are federated, so you can eg. follow @stefan@mirlo.space from a Mastodon server, no need to sign up for a new service as a fan.
There is also Bandwagon as an alternative to Bandcamp, which is also federated, so you can follow me as @stefanbohacek@bandwagon.fm .