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In the previous article “MMR — the possibility for superlight verification of block”, Poly Enterprise team introduced that each leaf node (a block) of Merkel Mountain Ranges actually commits all the previous blocks, and even if the header chain of blocks is not saved, the verification node can still determine the validity of the latest block based on the MMR root hash. Thus, MMR can provide an opportunity to solve superlight verification problem of PoW based chain.

Introduction

In order to verify the validity of transactions, cryptocurrencies such as Bitcoin and Ethereum, require nodes to verify the validity of the blockchain…

Ruotong Wang

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