TL;DR
https://lenstube.xyz/watch/0xf5b2-0x014a
Staking is a process by which individuals lock their cryptocurrency (their “stake”) to support the security and operation of a blockchain network. When someone stakes their coins, they are essentially helping to secure the chain and validate transactions on the blockchain.
Staking is only possible on blockchains such as Ethereum and Cardano based on a proof-of-stake (PoS) consensus mechanism. PoS differs from the proof-of-work (PoW) used in cryptocurrencies such as Bitcoin, where miners use computing power to validate transactions.
Staking coins makes users' holdings less liquid because the coins are tied up in the staking process. Individuals can usually still access their staked coins but may only be able to use them for other purposes once they are no longer staked.
Many long-term crypto holders look at staking as a way of making their assets work for them by generating rewards, rather than collecting dust in their crypto wallets.
Staking is also a way to contribute to the security and efficiency of the blockchain projects you support. By staking some of your funds, you make the blockchain more resistant to attacks and strengthen its ability to process transactions.
This is where it starts to get more technical. Bitcoin, for instance, doesn’t allow staking. To understand why, you need a little bit of background.
For a relatively simple blockchain like Bitcoin’s (which functions a lot like a bank’s ledger, tracking incoming and outgoing transactions) Proof of Work is a scalable solution. But for something more complex like Ethereum — which has a huge variety of applications including the whole world of [DeFi](https://www.coinbase.com/learn/crypto-basics/what-is-defi#:~:text=DeFi (or “decentralized finance”,on public blockchains%2C primarily Ethereum.&text=As with crypto generally%2C DeFi,pseudonymous%2C and open to all.) running on top of the blockchain — Proof of Work can cause bottlenecks when there’s too much activity. As a result transaction times can be longer and fees can be higher.
A newer blockchain consensus mechanism called Proof of Stake emerged — with the idea of increasing speed and efficiency while lowering fees. A major way Proof of Stake reduces costs is by not requiring all those miners to churn through math problems, which is an energy-intensive process. Instead, transactions are validated by people who stake their tokens.