Amazon this week filed a US patent for a Proof-of-Work system which uses cryptography to generate Merkle trees. The Bitcoin and Ethereum networks use such ‘hash trees’ to verify the content of large data structures.

Proof-of-Work as a Tool Against DoS Attacks

A Merkle tree is a fundamental component of a blockchain, whereby each non-leaf node is a hash of its respective child nodes. In Amazon’s patent, the generation of a Merkle tree could fulfill a challenge, allowing access to a computing resource. From the abstract:

The challenge may include a message and a seed, such that the seed may be used at least in part to cryptographically derive information that may be used to generate a solution to the challenge.

Thus, the expense of resources in creating a valid solution could deter malicious entities from attempting denial-of-service (DoS) or other attacks.

Proof-of-work Patent

Amazon Continues To Push Crypto Without The Currency

Amazon, in the guise of its Amazon Web Services arm, has been rather active in the blockchain space. It claims…

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