A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain. Each block in the chain contains a number of transactions, and every time a new transaction occurs on the blockchain, a record of that transaction is added to every participant’s ledger. The decentralised database managed by multiple participants is known as Distributed Ledger Technology (DLT). Source: www.euromoney.com
Cardano is a proof-of-stake blockchain platform: the first to be founded on peer-reviewed research and developed through evidence-based methods. It combines pioneering technologies to provide unparalleled security and sustainability to decentralized applications, systems, and societies. Source: cardano.org
Staking Cardano is a great way to earn passive ADA income. You can view it as earning interest on your crypto holdings. With some assets, staking means you agree to lock up your tokens for a certain period of time, during which they are unspendable. However, this is not the case with Cardano. Much like Tezos, you can spend your Cardano whenever you choose. By staking your ADA, you actively support the Cardano network by allocating resources to it and contribute to the stability of the network. In return for your support, you earn ADA tokens as a reward.
When you stake your ADA, you are actually staking your Cardano address. This means you can't choose how much to delegate to the pool. It is all of your Cardano balance or nothing since you are staking your address to the pool. You can still perform normal transactions whilst your ADA is staked. When it is time to receive your rewards, a snapshot will be taken and your current balance at that time will be used to calculate your reward.
The required minimum is only 5 ADA!
When you decide to start staking your Cardano, you will need to wait 20 days to be approved and then another 5 days (one epoch) for the first cycle to complete in order to earn rewards.
If you would like to see the amount of time remaining in the epoch, you can visit Cardano Explorer and look at the value in Current Epoch Ends In.
Staking your ADA tokens is done in a non-custodial way in Exodus. That means that it is as safe as simply holding them in your wallet. You keep full control over your tokens while they are staked and you're even free to use your funds and move them around while they are staked. So instead of letting them sit idly in your wallet, you might as well put them to good use and let them earn rewards for you!