For any developer who has tried to build a decentralized application used by the masses, it is clear that Ethereum—in its current manifestation—isn’t quite ready. However, improvements are well underway.
Proof-of-Stake is a consensus mechanism in which a blockchain network comes to an agreement on the order and validity of transactions. Learn more here.
Delegated Proof-of-Stake, or DPoS for short, implements a structure in which a fixed set of block producers are the only actors in the system who can propose new blocks.
Casper Protocol, an upgrade to Ethereum that brings with it a new consensus mechanism powered by Proof-of-Stake. Casper is a unique system in that it solves the ‘nothing at stake’ problem that plagues most Proof-of-Stake networks.
The scalability trilemma is arguably the most important unsolved problem in the blockchain space. It refers to the current reality that blockchains in which every node validates each transaction can’t have simultaneously possess all of these properties: Decentralization, Scalability & Security.
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