I see a lot of people on social media posting their first ascents. These people are usually professional climbers climbing new super hard routes and as a result their first ascents blow up on social media. But what if, hypothetically, I find an untouched boulder at make the first ascent of a V0 boulder. Where would I document this? If there isn't some central database, how will people know if they actually made the first ascent of something?

A quick google search for first ascent documentation turned up fruitless.