Sort:  

Would you like to pay in bitcoin, ethereum, litecoin or steem? Which has the fastest confirmations, please?

Meh, whichever coin the smart-wallet app decides is best based on what the vendor accepts and user preferences.

Why bring a human into it?

Coin Marketplace

STEEM 0.25
TRX 0.19
JST 0.037
BTC 91911.91
ETH 3307.29
USDT 1.00
SBD 3.71