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by ethagknight 3117 days ago
If you look right now at both Bitfinex and GDAX/Coinbase, there is a $1000 discrepancy in price between the two. I know that these are separate markets, but they both represent bitcoin, and I wish I knew how to arbitrage between the two if a Bitcoin is a Bitcoin the world over.. My guess is that is exactly what Coinbase is doing: showing its exchange price, but executing sale orders on different exchanges.