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https://phibetaiota.net/2016/05/stephen-e-arnold-goring-the-oxen-palantir-facebook-google-and-noticing-steeles-idea-for-open-source-micro-payments-in-blockchain/
Stephen E. Arnold: Goring the Oxen -- Palantir, Facebook, Google -- and Noticing Steele's Idea for Open Source Micro-Payments in Blockchain