What is Hedera and how is it different from existing blockchain technologies?

cnbctv18.com:

Hedera is a new platform that could present an alternative to conventional blockchain technology. Currently, every blockchain uses a ‘consensus mechanism’ to validate its transactions. Older blockchains like Bitcoin and Ethereum use the Proof-of-Work (PoW) mechanism.

Here, each node (or miner) dedicates computing power at their disposal to solve complex mathematical equations to access and authenticate transactional data.Newer blockchains, however, use the more energy-efficient Proof-of-Stake (PoS) mechanism. Ethereum is also in the process of upgrading to PoS now. In PoS, miners pledge the blockchain’s native cryptocurrency to the network to qualify as transaction approvers.

The likelihood of becoming a miner grows as the amount of cryptocurrency devoted to the blockchain grows. For example, a person dedicating 10 Hedera to the blockchain is more likely to become a miner than a person dedicating only seven.Hedera (HBAR) is the native cryptocurrency of the Hedera Hashgraph system – a uniquely structured technology that is expected to be faster, more efficient, and more secure than blockchain technology.How is the Hedera Hashgraph different from other blockchain technologies?The Gossip ProtocolHedera uses its revolutionary ‘Gossip’ protocol. Here, each node on the network communicates with every other node on the network to record and authenticate transactions.