Demo: https://coinbase.com/docs/merchant_tools/payment_buttons https://coinbase.com/docs/merchant_tools/payment_buttons We charge 1% when you buy or sell bitco

Demo: https://coinbase.com/docs/merchant_tools/payment_buttons https://coinbase.com/docs/merchant_tools/payment_buttons We charge 1% when you buy or sell bitcoin (by connecting any U.S. bank account). Sending BTC-to-BTC is free (we pay the minimal bitcoin fees on your behalf). We also released a nice API: https://github.com/coinbase/coinbase-ruby https://github.com/coinbase/coinbase-ruby