you *seriously* beleive that a major bitcoin exchange does not operate thier own node? Something that can be achieved for <$100 with a standalone device and uses <64GB of storage?


get real. you can buy a 1TB harddrive for $50 today and store BIP101-enabled blockchain onto it for years to come. then pay $50 more for a 4TB drive to handle a few more years of growth.  or are you still using the same computer you owned in 1999 with its 1.6GHz singlecore, 512MB ram, and 60GB HDD (all cutting edge)?