I saw Trace Mayer and got spooked. I don't know a lot about the history to be frank. Heard the guy went nuts on alts.

January 3rd is a self custody day: https://www.proofofkeys.com (mentioned by @ugmug above too)

nout

My broker for example where I DCA doesn't make a transaction per buy I make.

I made a lot of buys and then when I withdrew to coldstorage all my BTC was sent from a single address. So with that broker, I don't really have a wallet it appears.

Perhaps we should introduce a self custody day a year viral campaign, so that everybody is encouraged to take it off exchanges.

bitcoin

Remove coins from exchanges lead to supply squeeze?

bitcoingraffiti

My broker for example where I DCA doesn't make a transaction per buy I make.
I made a lot of buys and then when I withdrew to coldstorage all my BTC was sent from a single address. So with that broker, I don't really have a wallet it appears. 
They likely not have a full reserve.

Perhaps we should introduce a self custody day a year viral campaign, so that everybody is encouraged to take it off exchanges.