Coinbase will not support Ripple yet
Source: https://businessinsider.com.pl/finanse/kryptowaluty/coinbase-nie-bedzie-na-razie-wspieral-ripple/87tdv1c
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From @pinasek
Source: https://businessinsider.com.pl/finanse/kryptowaluty/coinbase-nie-bedzie-na-razie-wspieral-ripple/87tdv1c