A cryptocurrency is any form of currency that exists digitally or virtually and uses cryptography to secure transactions. Cryptocurrencies don’t have a central issuing or regulating authority, instead, they use a decentralized system to record transactions and issue new units.

Here is how you can buy your first cryptocurrency

What is blockchain?

A blockchain is a growing list of records, called blocks, that are linked together using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree). The timestamp proves that the transaction data existed when the block was published in order to get into its hash. As blocks each contain information about the block previous to it, they form a chain, with each additional block reinforcing the ones before it. Therefore, blockchains are resistant to modification of their data because once recorded, the data in any given block cannot be altered retroactively without altering all subsequent blocks.

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What is a smart contract?

A smart contract is a computer program or a transaction protocol that is intended to automatically execute, control, or document legally relevant events and actions according to the terms of a contract or an agreement. The objectives of smart contracts are the reduction of need in trusted intermediates, arbitrations, and enforcement costs, fraud losses, as well as the reduction of malicious and accidental exceptions.

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What is an NFT?

A non-fungible token (NFT) is a unique and non-interchangeable unit of data stored on a digital ledger (blockchain). NFTs can be associated with reproducible digital files such as photos, videos, and audio. NFTs use a digital ledger to provide a public certificate of authenticity or proof of ownership, but it does not restrict the sharing or copying of the underlying digital file. The lack of interchangeability (fungibility) distinguishes NFTs from blockchain cryptocurrencies, such as Bitcoin.

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What is Web 3?

Web3, also known as Web 3.0, is an idea for a new iteration of the Internet that is based on public blockchains. The term was coined in 2014 by Ethereum co-founder Gavin Wood, and the idea gained interest in 2020 and 2021 from cryptocurrency enthusiasts, large technology companies, and venture capitalist firms.

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What is DeFi?

Decentralized finance (commonly referred to as DeFi) is a blockchain-based form of finance that does not rely on central financial intermediaries such as brokerages, exchanges, or banks to offer traditional financial instruments, and instead utilizes smart contracts on blockchains, the most common being Ethereum.[citation needed] DeFi platforms allow people to lend or borrow funds from others, speculate on price movements on a range of assets using derivatives, trade cryptocurrencies, insure against risks, and earn interest in savings-like accounts. DeFi uses a layered architecture and highly composable building blocks.

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What is GameFi?

GameFi is also known as Game Finance, is the gamification of financial systems to create profit from playing play-to-earn crypto games.

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A typical way many try to make a return in crypto with little to no involvement is through buying and holding crypto – also known in the industry as “HODLing.” This means an investor is prepared to purchase a digital asset with the mindset that its price will hopefully rise significantly sometime in the future. Such investors are ready to go the distance as this long-term strategy might require them to hold their positions anywhere between six months to five years. Through the duration of this investment, an investor does not have to be proactive in the crypto market. They only need to buy the digital asset and store it in a secure wallet – preferably a non-custodial wallet.

• A wallet is a device or app where you can store a special key (private key) that gives access to your cryptocurrencies. The non-custodial variants let you store the private key in your personal devices, including a computer, mobile phone, or purpose-built wallet devices. With this, you have complete control over your private keys and, ultimately, your digital assets. By comparison, with a custodial wallet, a third party controls your private keys.

However, simply buying and holding a crypto asset for any length of time does not guarantee you will make a profit. In fact, it’s very possible you could lose money. As such, exclusively HODLing crypto cannot be considered a truly passive income generator.

Proof-of-stake (PoS) staking

Proof-of-stake is a type of blockchain consensus mechanism designed to allow distributed network participants to reach an agreement on new data entering the blockchain. Note that blockchains enable open and decentralized networks where participants contribute to governance and processes involved in validating transactions. This is critical because such a community-focused approach eliminates the need for central authorities like banks. In most cases, blockchains randomly pick participants, elevate them to the status of validators, and reward them for their efforts.

The systems used to pick validators vary from blockchain to blockchain. Some blockchain networks require users to deposit or commit their financial resources to the network. Here, the blockchain selects validators from a pool of users that have staked a specified sum of its native digital asset. In return, validators earn interest on the staked funds for contributing to the validity of the network. This validation mechanism is what is called proof-of-stake. It provides an opportunity for holders (those in it for the long haul) to generate passive income.

Knowing fully well that transaction validation might be technically tasking, you could opt for PoS blockchains that allow you to delegate your stakes to other participants who are ready to take up the technical requirements of staking. Understandably, the reward distributed to validators is slightly higher than that of a delegator. Some of the PoS blockchains you could consider are:

• Cardano
• Ethereum 2.0
• Polkadot
• Solana

For even more convenience, you could adopt one of the several staking services available today. With these platforms, you can deposit a fraction of the number of digital assets required by the blockchain. For example, you normally have to deposit a minimum of 32 ETH on the Ethereum 2.0 blockchain to become a validator. With a third-party Ethereum staking service, however, you could deposit as little as 5 ETH to start accruing interest.

Interest-bearing digital asset accounts

Holders can take advantage of interest-bearing crypto accounts to earn fixed interest on their idle digital assets. Think of this as putting money in an interest-earning bank account. The only difference is that this service supports only crypto deposits. Instead of holding digital assets in your wallets, you can deposit them in these accounts and receive daily, weekly, monthly or yearly earnings, depending on the predefined interest rates. Crypto service providers that offer such products include:

• Nexo
• Celsius Network
• SwissBorg
• BlockFi

Lending

Lending has become one of the most popular crypto services in both the centralized and decentralized segments of the crypto industry. As an investor, you can lend your digital assets to borrowers for a chance to earn interest. There are four main lending strategies you could opt for:

Peer-to-peer lending: Platforms that provide such services enable systems that allow users to set their terms, decide the amount they want to lend and the interest they intend to generate on loans. The platform matches lenders with borrowers, similar to how P2P (peer-to-peer) trading platforms match buyers and sellers. Such lending systems provide users with a certain degree of control when it comes to crypto lending. However, you have to deposit your digital asset on the lending platform’s custodial wallet beforehand.

Centralized lending: In this strategy, you rely solely on the lending infrastructure of third parties. Here, the interest rates are fixed, so are the lock-up periods. Like P2P lending, you have to transfer your crypto to the lending platform to start earning interest.

Decentralized or DeFi lending: This strategy allows users to execute lending services directly on the blockchain. Unlike the P2P and centralized lending strategies, there are no intermediaries involved in DeFi lending. Instead, lenders and borrowers interact with programmable and self-executing contracts (also known as smart contracts), which autonomously and periodically set interest rates.

Margin lending: Lastly, you could lend your crypto assets to traders interested in using borrowed funds to trade. These traders amplify their trading position with borrowed funds and repay the loans with interest. In this case, crypto exchanges do most of the work on your behalf. All you need to do is make your digital asset available.

Cloud mining

Unlike the proof-of-stake mechanism explained earlier, some blockchains, including Bitcoin, opt for a more computer-intensive approach where users need to prove the eligibility of their claim to become validators (more commonly called miners) by competing against each other to solve highly complex mathematical puzzles. This process is called crypto mining. Due to the competitiveness of this consensus mechanism, miners have to invest in powerful computers and pay exorbitant electricity bills.

Undoubtedly, this venture is time-consuming and technical. And so, investors often opt for an alternate approach called cloud mining. With this, you can pay third parties to take up the technical aspect of crypto mining on your behalf. In essence, you pay a platform that offers such services a lump sum to rent or buy mining machines from their mining facilities. After this first payment, you might have to pay a daily maintenance fee so that the cloud mining service provider can help you manage your mining rigs.

As exciting as this sounds, it comes with lots of risks. Cloud mining has been a subject of controversy ever since it became widely adopted. There have been several cases of scams due to the remote nature of this mining venture. Therefore, you should carry out due diligence before opting for this option.

Dividend-earning tokens

Certain tokens offer holders a fraction of the revenue of the company that issued them. All you need to do is hold the token, and you are automatically eligible to receive a certain percentage of the company’s revenue. The number of tokens you own determines the share of the revenue you would receive. An example of this is KuCoin Shares (KCS), where holders receive a daily share of transaction fees accrued by the KuCoin blockchain asset exchange. The amount received is proportional to the amount of KCS tokens each holder stakes.

Yield farming

Yield farming is another decentralized, or DeFi, method of earning passive crypto income. This is made possible by the dynamic operations of decentralized exchanges, which are basically trading platforms where users rely on the combination of smart contracts (programmable and self-executing computer contracts) and investors for the liquidity necessary to execute trades. Here, users do not trade against brokers or other traders. Instead, they trade against funds deposited by investors – known as liquidity providers – into special smart contracts known as liquidity pools. In turn, liquidity providers receive a proportional amount of trading fees from the pool.

To start earning passive income via this system you first have to take up the role of a liquidity provider (LP) on a DeFi exchange such as Uniswap, Aave, or PancakeSwap.

To start earning these fees, you have to deposit a specified ratio of two or more digital assets into a liquidity pool.

• For example, in order to provide liquidity to an ETH/USDT pool, you will need to deposit both ETH and USDT tokens into it.

Once you deposit liquidity, the decentralized exchange will transfer LP tokens representing your share of the total funds locked in the liquidity pool. You can then stake these LP tokens using supported decentralized lending platforms and earn additional interest. This strategy allows you to earn two separate interest rates from a single deposit.

The crypto passive income opportunities listed in this guide are just some of the many ways you can make extra profit with your idle digital assets. Note that none of these opportunities are risk-free. Hence, it is advisable to carry out your own research, seek professional guidance from a qualified financial advisor, and determine what best suits your investment goals.

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Source: CoinDesk

In DeFi, a smart contract replaces the financial institution in the transaction. A smart contract is a type of Ethereum account that can hold funds and can send/refund them based on certain conditions. No one can alter that smart contract when it’s live – it will always run as programmed.

A contract that’s designed to hand out an allowance or pocket money could be programmed to send money from Account A to Account B every Friday. And it will only ever do that as long as Account A has the required funds. No one can change the contract and add Account C as a recipient to steal funds.

Contracts are also public for anyone to inspect and audit. This means bad contracts will often come under community scrutiny pretty quickly.

This does mean there’s currently a need to trust the more technical members of the Ethereum community who can read code. The open-source-based community helps keep developers in check, but this need will diminish over time as smart contracts become easier to read and other ways to prove the trustworthiness of code are developed.

Source: Ethereum Website