American Express Patent: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1&p=1&f=G&l=50&d=PG01&S1=20180197173.PGNR.&OS=dn/20180197173&RS=DN/20180197173 Mastercard Patent: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=2&f=G&l=50&co1=OR&d=PTXT&s1=cryptocurrency&s2=blockchain&OS=cryptocurrency+OR+blockchain&RS=cryptocurrency+OR+blockchain News Articles: AMEX https://cryptocurrencynews.com/crypto-daily-news-07-16-18/ MasterCard https://www.coindesk.com/mastercard-wins-patent-for-speeding-up-crypto-payments/ AllAboutTech contact:
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