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 Amazon |  Patent | Proof-of-Work  Cryptographic System | PoW

Amazon is awarded a patent for various techniques to build a proof-of-work (PoW) cryptographic system on Tuesday by the U.S. Patent and Trademark Office (USPTO).

Initially filed in December 2016, the patent outlines how Merkle trees, a concept dating back to 1979, can be generated as a solution to a proof-of-work challenge, among other benefits. A Merkle tree structure enables verification of the data sent between computers, and on peer-to-peer networks such as blockchains, it could be to ensure blocks are not falsified.

As for PoW, it is an algorithm employed to protect networks by asking a service participant to do “work”, i.e using the computer’s processing power to solve complex mathematical puzzles. For instance, the bitcoin blockchain network uses a PoW algorithm for the work done by miners.

In this particular case, the Merkle tree cr...

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