The world is talking over blockchain and there are many benefits to talk about this technology but in the haze of blockchain fever, we have forgotten the benefits of our tradion systems of validation. Lets see why we need a combination of centralized and decentralized validation systems.
#1 There is no or very low protection on the blockchain.
#2 settlement on this validation system the blockchain is slow.
#3 The growing blockchain size leads to congestion and very few miners.
#4 Eventually the settlement through blockchain will be or already is expensive.
#5 The transanctions are not reversible.
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