You're in a great position with crypto. I'm trying to diversify, so want some of different things, but I fully expect my crypto to do way better for me than anything else. It's very different here in the US, where our dollar is strong but interest rates are less than inflation. We are disincentivized to save in cash in the bank, but able to buy various kinds of assets and commodities. The govt. of course wants us to buy stocks, but I already locked in those gains and bid that market adieu for the foreseeable future.

If at some point it works out for you to trade some crypto for actual silver coins though, and you can authenticate the purity of the coins, if only based on the reputation of the seller, then it might be a good idea to diversify a little. In times when currency is being devalued and inflation is going wild, some people will take crypto, but pretty much everyone will take silver or gold. Gold is much harder to carry and to buy with in small amounts. It's just too expensive for the weight.

Where I bought my silver accepts BTC as payment.