Amazon files patent for Proof-of-Work system for the prevention of DDoS
By Mark Lemon – Cryptocurrency Specialist
Online retail giant Amazon has acquired a new patent based on the proof-of-work (PoW) algorithm, a system that most of the leading cryptocurrencies are built on. When you buy Litecoin or Bitcoin the network will process the transaction using this algorithm.
Filed in December 2016, the patent document describes a system that utilises a PoW cryptographic concept that prevents distributed denial-of-service (DDoS) attacks.
Merkel Tree in Proof-of-Work
The authors of this document suggest using Merkle Trees that enable computers on the network to prove individual records without the need to compare and review versions of the whole database. A user buying Bitcoin on a system like this would be able to receive the coins much quicker.
This, as the patent indicates, makes it seem like building the Merkle tree is the needed PoW within the network which can assure that other database records haven’t changed.
The patent that was published by the U.S. Patent and Trademark Office (USPTO) explains that the first party can request access to a computer resource in which the second party can decide a challenge for the first party. The correct answer to the challenge can be generated from the first party and provided to the second for access to be gained.
USPTO also explains that because the system requires a valid PoW, participants of the DDoS attack need to generate this which takes computational resources, in turn reducing the rate requests can be sent.
It seems many large companies are appearing interested as just last year many had applied for blockchain-based patents. This application and previous are what suggested the online retail giant Amazon was going to be involved with blockchain. Back in early November, Amazon had filed a cloud computing patent, which tells a person that may buy cryptocurrency, on how to use it as a payment method for Amazon Web Services' (AWS) cloud computing services.
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