Reputable bloggers with millions of subscribers do not often take up a developing project.
And for developing crypto projects, reputation is very important. So contact bloggers who advertise everything its bad idea.
Do you know crypto bloggers who value their reputation and advertise developing projects?You are very wrong, facebook/google advertises everything from scam to trustworthy websites but this doesn't affect their reputation. You can even get paid articles on reputable websites like cointelegraph, ccn and so on, it's not publishers' duty to control whether advertiser runs trustworthy project or not.
To my mind best way for developing project is to get attention on bitcoin related news websites. Advertisement here plays a huge role too because almost everyone started from this website.
Personally don't have experience of advertising via bloggers.