On which exchanger you recommend the safest to put your altcoins/Bitcoin assets?
Now opened exchange to sign up is Binance only all the other site currently closed for the sign up so nothing cannot do with them. Please let me know you want to buy the altcoins and hodl or wanna invest on trading and manipulate it.
For trading your choices are below sites:
Bitrex is fastest trading execution site than any trading site.
Next I suggest to invest on polenix because this little risk free from the hackers who is targeting the money on trading site.
To hold your fund for long time. I suggest to buy the Ledger Nano or keep the fund on the private key secured wallet. If that is online oriented one. Please make sure you are entering the URL perfectly. This is issue for some people. Keep in mind buddy.