Specifically, the patent targets Merkle trees — a data verification tool — to constitute the work required in a PoW setup.
“This document describes techniques for using the generation of Merkle Trees as a solution to a proof-of-work challenge,” the patent reads.
The exact nature of Amazon’s plans remains unclear. The patent document does not reference specific uses within a cryptocurrency or blockchain, continuing uncertainty over the company’s stance on the wider cryptocurrency phenomenon.
As Cointelegraph reported, rumors Amazon was preparing to take a direct interest in bitcoin, for example, have repeatedly sparked a frenzy within the crypto community, each time culminating in nothing.
At the same time, others consider it only a matter of time before an integration occurs. In February, Changpeng Zhao, CEO of exchange Binance, claimed Amazon would ultimately have no choice but to issue some form of cryptocurrency.
“For any internet (non-physical) based business, I don't understand why anyone would not accept crypto for payments,” he said.