📖
Web3 Encyclopedia
  • Welcome aboard!
  • Source
  • 😀Evolution from Web 1.0 to Web 3.0
    • Web 1.0 Web 2.0 Web 3.0
    • Key Features
    • Current Limitations
    • Future of Web 3.0
    • Learn: What Is Web3?
    • Learn: Will Every Brand Have a Web3 Strategy?
    • Learn: Big Ideas in 2023
    • Learn: The Web3 Paradox: Why Scaling Usage Alone Won't Lead to Mass Adoption?
    • Learn: Is Web3 A Marketing Buzz or Tech Revolution?
    • Learn: What is the relationship between blockchain and Web3?
    • Learn:Empowering Women in Web 3.0: The Role and Contributions of Women in Blockchain, DeFi, and dApp
    • Learn: Web 3.0 and the Future of E-Commerce
    • Learn: 12 ways ecosystem projects can attract more developers
    • Learn: How Web3 is Impacting Education?
    • Learn: Web3 And The Future Of Digital Advertising
    • Learn: Web3’s impact on personalization, trust and engagement
    • Learn: Web3-Powered Identity Management -- Unlocking the Benefits of Decentralization
    • Learn: Why Web2 companies fail in Web3 while others made it?
    • Learn: To Identify or Not in a Web3 World?
    • 🤫[Insider Series] McKinsey x Web3
    • TL;DR 👀
  • 💲Blockchain Fundamentals
    • Why is Blockchain So Popular?
    • Introduction to Blockchain
    • Blockchain Misconceptions
    • Blockchain vs Bitcoin, Database, Cloud
    • Consensus Mechanism
    • Public and Private Keys
    • Hash Functions and Cryptography
    • Sharding
    • Types of Blockchains: PoW, PoS and Private
    • Understanding Cryptocurrency
    • Coins vs Tokens
    • Blockchain Trilemma
    • Legality
    • Learn : Google’s Cloud Based Blockchain Node Service
    • Learn: How Blockchain, Digital assets, and Web3 Unlock Financial Inclusion Globally
    • Learn: Will Chinese-Made Crypto Soar Higher?
    • Learn: What Does MiCA Mean for Crypto in Europe?
    • Learn: Unraveling the Intricacies of Blockchain Forensics and Asset Tracking
    • Learn: Promising blockchain use cases in healthcare industry
    • Learn: The Role of Blockchain in Authenticating and Provenance Art
    • Learn: Blockchain-Based Digital Identity: Benefits, Risks, and Implementation Challenges
    • Learn: The Future of Energy Supply Chains
    • Learn: Revolutionizing smart contracts and cryptocurrency
    • Learn: Nigeria goes blockchain
    • Learn: A Game Changer for Online Gaming?
    • Learn: Is blockchain technology ready for high-storage applications?
    • Learn: Will Blockchain Technology Mark a Turning Point in Fraud Prevention?
    • Learn: Why ZK-rollups need data availability?
    • Learn: How will generative AI disrupt blockchain?
    • Learn: A New Blockchain for Generative AI?
    • TL;DR 👀
  • 🏟️Web3 Utilities
    • Decentralized Applications (dApps)
    • Cross-chain Bridges
    • DAO
    • Artificial Intelligence
    • Learn: Is Community-building Essential for Web3 Startups?
    • Learn: ‘Decentralization Theater’
    • Learn: Crypto and AI- A yay or nay combination?
    • Learn: Dissecting the DAO
    • Learn: What is motivating Lido DAO to rise?
    • Learn: How to Turn Your Community Into a DAO?
    • Learn: The Key to Decentralized Decision Making
    • Learn: How Web 3.0 can disrupt the supply chain industry?
    • TL;DR 👀
  • 🪙Bitcoin
    • What is Bitcoin
    • Bitcoin's Blockchain Technology
    • UTXO Model and Transaction Fees
    • Bitcoin Mining and Mempool
    • Learn: What is bitcoin mining?
    • What are Hard Forks and Soft Forks
    • What is SegWit and the Lightning Network
    • Bitcoin Ecosystem
    • Can Bitcoin be Destroyed? Game Theory and Network Attacks
    • Learn: Crypto token supplies explained
    • Learn: What is crypto tax-loss harvesting, and how does it work?
    • Learn: Can Crypto Go Green? How to Invest in Eco-Friendly Cryptocurrencies
    • Learn: Why Did FTX Collapse? Here’s What to Know.
    • Learn: How Sam Bankman-Fried swindled $8 billion in customer money?
    • Learn: How much is Bitcoin worth today?
    • Learn: The Costs of Running a Bitcoin Node In Nigeria
    • Learn: Has 2022 Left Any Crypto Positives?
    • Learn: How Crypto Exchanges Can Be Free of Risk?
    • Learn: Greed, Lies and FTX: Is Crypto a Force for Good or Evil?
    • Learn: Is Crypto a Cultural Movement?
    • Learn: What are the consequences of crypto’s ongoing regulatory process?
    • Learn: Beyond the Crash and Embracing NFTs?
    • Learn: Understanding crypto bag holders and their mindset
    • Learn: Inscriptions: Just A Fad, Or A Real Threat To Bitcoin Becoming Decentralized Money?
    • Learn: How Bitcoin Ordinals Can Change the Future Of Mining?
    • Learn: What is a supernet?
    • Learn: Bitcoin Miners Celebrate 10 Years Since First ASIC, What Changed Since Then?
    • Learn: Bill Vs. CBDC – Why This US Congressman Wants To Block The Fed From Issuing A Digital Dollar?
    • Learn: Why Bitcoin Will Blow People’s Minds In 2025?
    • Learn: How the Howey Test Sheds Light on Cryptocurrency's Regulatory Gray Area
    • Learn: Cryptocurrency vs AI: A Complex Debate
    • Learn: Where the U.S. Government Went Wrong in Regulating Crypto?
    • Learn: The Nostr Privacy Paradox
    • Learn: Do algorithmic stablecoins have a future as centralized coins are under scrutiny?
    • Learn: Is Bitcoin Set To Revolutionize The Financial World With Its Superior Purchasing Power?
    • Learn: What is Shibarium, and what does it mean for Shiba Inu?
    • Learn: What is a crypto dusting attack?
    • Learn: Is the Adoption of Central Bank Digital Currencies (CBDCs) the Future?
    • Learn: How Artificial Intelligence Could Revolutionize Crypto?
    • Learn: What’s next for EU’s crypto industry as European Parliament passes MiCA?
    • Learn: Why the EU Has MiCA and the U.S. Has Securities Law Confusion?
    • Learn: Six New Projects Looking to Mitigate Bitcoin Mining’s Energy Footprint
    • Learn: Who on Crypto Twitter chose not to pay for a blue checkmark?
    • Learn: What is the wash-sale rule in Crypto?
    • Learn: What is Pepecoin and can it flip memecoins Dogecoin and Shiba Inu?
    • Learn: Can you recover stolen Bitcoin from crypto scams?
    • Learn: What the ‘anti-mining bill’ means for the crypto industry in Texas?
    • Learn: Does the US have a crypto ‘tax loophole’ problem?
    • Learn: How users can stay protected?
    • Learn: How Crypto Revolutionize Cheaper and Faster Transactions?
    • Learn: Can NFTs and CFDs be BFFs?
    • Learn: A PR expert’s tips for memecoin projects
    • Learn: Why politicians aren't convinced about the Digital Euro?
    • Learn: How A 90-Year Old TA Theory Predicted The Sudden Bitcoin Boom?
    • Learn: Social Trading Platforms and CFDs: A New Paradigm in Investment
    • Learn: How could the Chinese economic crisis impact Bitcoin and crypto?
    • Learn: How do they compare: Bitcoin IRA vs. traditional IRA?
    • Learn: Why Tokenized Assets Are Safer During a Banking Crisis?
    • TL;DR 👀
  • 🛢️Ethereum
    • Bitcoin vs Ethereum
    • What can Ethereum do?
    • What is Ether (ETH)?
    • What's Unique About ETH?
    • What are Smart Contracts?
    • Energy Consumption?
    • Ethereum Virtual Machine (EVM)
    • Pros & Cons of Smart Contracts
    • Decentralized Applications (dApps)
    • Ethereum Token Standards (ERC-20, ERC-721 and ERC-1155)
    • Evolution of Ethereum
    • How to Get Your First Ethereum
    • Learn: Next Ethereum Upgrade — Shanghai Upgrade
    • Learn: Tipping Scale for Crypto Adoption: Usability vs. Accessibility
    • Learn: Major Publicly Traded U.S. Bitcoin Miner Files For Chapter 11 – Impact On The Market?
    • Learn: 5 altcoin projects that made a real difference in 2022
    • Learn: How Tether Can Be a More Stable Stablecoin?
    • Learn: Are the Ethereum Killers Still Deadly?
    • Learn: What Ethereum Tech Trends Are Weathering the Bear Market?
    • Learn: How Ethereum’s token burns are making it a deflationary cryptocurrency?
    • Learn: A few things to know about Ethereum's Shanghai Upgrade
    • Learn: The Role of Enterprise Ethereum
    • Learn: Understanding Layer 2 Scaling Solutions for the Ethereum Network
    • Learn: The Battle of Giants: Bitcoin vs Ethereum
    • Learn: Cryptography, Smart Contracts and Distributed Networks
    • Learn: The Memecoin Grift and How It Threatens Ethereum Culture
    • Learn: What Is Ethereum’s ‘Data Availability' Problem, and Why Does It Matter?
    • TL;DR 👀
  • 👛Wallet
    • What is a Blockchain Wallet?
    • Hardware / Software Wallet
    • How to Get Your First Cryptocurrency
    • Setting up Metamask Wallet
    • Learn: How to connect the Avalanche network to MetaMask?
    • Learn: How to pass on your crypto when you die?
    • Learn: What are hierarchical deterministic (HD) crypto wallets?
    • Learn: Pros and Cons of Digital Wallets
    • Learn : How Web 3.0 Wallets Are Redefining Digital Asset Security?
    • Learn: Open source: Buzzword or real security for crypto wallets?
    • TL;DR 👀
  • 🌕New & Rising Protocols
    • Binance
    • NEAR
    • Solana
    • Fantom
    • Polygon
    • Cardano
    • Polkadot
    • Cosmos
    • Harmony
    • Cronos
    • Optimism
    • Terra
    • Who Will Win the L1 Wars?
    • Learn: New Layer 1 Blockchains Are Expanding the DeFi Ecosystem But No Eth Killers Yet
    • Learn: Is an Increased Focus on Layer-2 Scaling and ZK Technology Justified?
    • Learn: What Are the Stakes in the SEC vs. Ripple Case?
    • Learn: What is The Graph, and how does it work?
    • TL;DR 👀
  • 📈Decentralized Finance (DeFi)
    • CEX vs DEX
    • CeFi vs DeFi
    • Algorithmic Stablecoins
    • Airdrop
    • Liquidity Pool
    • Impermanent Loss
    • Swapping
    • Wrapped Token
    • Arbitrage Opportunities
    • Staking
    • Yield Farming
    • Total Value Locked (TVL)
    • Gas Fees
    • Lending & Borrowing
    • Useful Tools
    • Activity: Uniswap & Pancake Swap
    • Learn: Automated Market Makers (AMMs) in DeFi
    • Learn: Crypto Moving towards ESG: What Is Regenerative Finance (ReFi)
    • Learn: What Is dYdX? Understanding the Decentralized Crypto Exchange
    • Learn: It's A Wrap - DeFi in 2022
    • Learn: Why DeFi should expect more hacks this year?
    • Learn: The Security Challenges of DeFi
    • Learn: The Promising Future of Decentralized Social Media on Web 3.0
    • Learn: Can CBDCs, Tokenized Deposits, Stablecoins and DeFi Coexist?
    • Learn: The Increasing Popularity of DeFi and Its Potential to Disrupt Traditional Finance
    • Learn: The future of DeFi is ReFi
    • Learn: DeFi aggregation
    • TL;DR 👀
  • 🙈Non-Fungible Token (NFT)
    • What are NFTs?
    • Case Study
    • Storage
    • Who are the Players?
    • NFT Marketplace
    • NFT Useful Resources
    • Activity: Mint Your Own NFT
    • Learn: How You Can Prevent Hackers From Stealing Your NFTs?
    • Learn: What Is an NFT Floor Price?
    • Learn: Should Bored Ape buyers be legally entitled to refunds?
    • Learn: China’s view of NFTs different from rest of the world’s
    • Learn: NFTs IRL: How Digital Collectibles Are Forging Offline Experiences
    • Learn: How NFT Brands Can Cut Through The Noise
    • Learn: How Web3 disrupts the music sector?
    • Learn: Unlockable content in NFTs
    • Learn: Why Meta Matters in NFTs?
    • Learn: Should NFT Marketplaces Become Centralized?
    • Learn: Hermès vs. MetaBirkins: The NFT Case That Could Have Major Trademark and Artistic Consequence
    • Learn: What are phygital NFTs, and how do they work?
    • Learn: What is NFT ticketing and how does it work?
    • Learn: Why Solana NFT marketplace is seeing less active users?
    • Learn: NFTs and Intellectual Property
    • Learn: How AI Is Changing Artistic Creation and Challenging IP Laws?
    • Learn: The Future of NFTs: Exploring Dynamic NFTs and Their Versatile Use Cases
    • Learn: NFTs in the event and ticketing industry
    • Learn: What is NFT rarity, and how to calculate it?
    • Learn: What happens to your NFTs when you die?
    • Learn: Dogecoin-Like Spike in Milady NFTs After Elon Musk’s Tweet, But Will It Last?
    • Learn: What are NFT royalties, and how do they work?
    • Learn: How developers aim to store crypto inside NFTs?
    • Learn: Generative Art NFTs: What Are They & Why Are They So Popular?
    • TL;DR 👀
  • 💗Metaverse
    • What is the Metaverse?
    • Metaverse Economy
    • Metaverse Companies
    • GameFi
    • Learn: Are We in the Metaverse Yet?
    • Learn: Can the Metaverse exist without blockchain?
    • Learn: Can the Metaverse Facilitate Sustainable Growth of Defi Systems?
    • Learn: What is the role of biometrics in the metaverse?
    • Learn: Can metaverse be the future court?
    • Learn: Metaverse Fashion Is on the Rise, but for Whom?
    • Learn: Sustainability in the Metaverse: Challenges and Opportunities
    • Learn: How To Build A Responsible Metaverse?
    • Learn: What is a VTuber, and how do you become one?
    • Learn: How proof-of-identity provides human experiences?
    • Learn: The “Metaverse” Next Frontier for Business: Impact And Challenges
    • Learn: The 5 Biggest Misconceptions About The Metaverse
    • Learn: Why culture and ownership are critical to the metaverse?
    • TL;DR 👀
  • 👾Career in Web3 (coming soon)
    • Developers
    • Moderators
    • Community Managers
    • UI/ UX Designers
    • Digital Fashion Designers
  • 🌱Sustainability (Coming Soon)
    • Industry Effort
    • Co-author
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  • What is lending and borrowing in DeFi?
  • How do they work?
  1. Decentralized Finance (DeFi)

Lending & Borrowing

What is lending and borrowing in DeFi?

DeFi lending and borrowing offers innovations in efficiency, access and transparency compared to CeFi. Anyone can borrow and lend.

Most people are familiar with the concept of borrowing and lending whether it be in the form of mortgages, student loans or similar etc.

Lenders provide borrowers with funds with the expectation that the borrowed amount is paid back with additional interest for providing immediate access to funds.

Traditionally, the process of bringing borrowers and lenders together was facilitated by financial institutions, such as banks or peer-to-peer lenders who control access along with borrowing lending rates. In traditional financial markets, the market for short-term borrowing and lending is referred to as the 'money markets'.

In the CeFi (centralized finance) crypto space, this is done by centralized platforms such as BlockFi, Nexo, etc. Much in the same way banks work, these CeFi platforms take custody of depositors' assets and in exchange pay a low (but safer) rate of return. With the deposited assets they lend out to other parties typically institutional players such as hedge funds, market makers (with lower chance of default), etc.

DeFi borrowing and lending offers innovations in efficiency, access and transparency compared to CeFi. In contrast to traditional banks and CeFi platforms mentioned above, DeFi allows any users to become a borrower and lender without having to hand over personal information, identity or undergo KYC (Know-Your-Customer) procedures. Borrowers and lenders also do not have to hand over custody of funds (i.e. user has access to their funds at all times).

This is done through smart contracts on open-source blockchains, predominantly Ethereum. Lenders can deposit to a lending protocol and borrowers will borrow from that protocol. At any time, lenders can redeem the deposited assets and borrowers can pay back part or all of their debt.

How do they work?

Users who want to become lenders can deposit their coins into DeFi protocol-based smart contracts. In return, they will get newly minted tokens native to the protocol, such as aTokens for Aave, cTokens for Compound and Dai for MakerDao. These tokens represent principal and interest in token form that can be redeemed at any time. The rate of exchange between the native tokens and the tokens deposited embeds inside the APY (annual percentage yield), an interest rate that's determined by the ratio that exists between the supplied and borrowed tokens in a particular market.

Borrowers can choose to borrow from one of these protocols and put down collateral. An important part of these types of loans is that they are over-collateralized, meaning that borrowers deposit as collateral an amount in crypto more than they borrow. Whilst the incentive to do this might seem counter-intuitive, reasons include borrowing to cover unforeseen expenses, avoiding forced liquidation of crypto holdings that are anticipated to appreciate, leveraging exposure on a crypto asset for speculation purposes and avoiding capital gains tax.

There is a limit to how much can be borrowed. This borrowing cap is determined by two factors:

  • The amount deposited by lenders in the protocol’s funding pool.

  • The quality, or 'collateral factor', of the coins put down as collateral by the borrower. The higher the quality of collateral the higher the amount can be borrowed. For example, if ETH has a 75% collateral factor and 10 ETH is put down as collateral, the borrower can borrow an amount in crypto worth up to 7.5 ETH.

Borrowers can put down several different coins as deposits, each with differing collateral factors. The limit the user can borrow will then be the total sum of these coins amounts multiplied by the collateral factor. Typically, users will borrow less than their limit and leave a buffer as the prices of tokens can fluctuate and can cause borrowers to be suddenly caught out borrowing an amount more than their limit. Thus, it is prudent to monitor when to deposit more collateral or maintain a healthy buffer, because if the limit is breached, the collateral will be auto-liquidated by the protocol, typically at a hefty discount to pay back the loan.

The price feed to value token prices (which determine limits and collateral values) in these scenarios depends on the protocol. Compound uses a blended feed of reputable crypto exchanges whereas Aave relies on using Chainlink as its price Oracle.

In addition, Aave offers stable APY, however, fluctuations may occur to adapt in cases of extreme liquidity changes, and in the long-term to changes to the supply and demand ratio between tokens.

Another innovation Aave offers are flash loans. These are loans that do not require collateral and the borrower uses the funds and repays the funds in the same on-chain transaction (in case of non-repayment all transactions including the loan are reversed). This innovation is an efficient solution that can be used for instantaneous arbitrage, portfolio restructuring and refinancing.

Despite the potential innovations that borrowing and lending in DeFi offers, there are also risks that come along with it.

Smart contract risk, whereby the protocol’s public code is targeted by hackers looking to exploit bugs and benefit from malpractice, is a common form of attack in DeFi.

Users can also be exposed to more volatile changes in APY.

One more risk to be aware of is that users need to be extra cautious with wallets and addresses. Sending money to the wrong wallet or losing your private key means that your funds are lost forever, which is not likely to occur under the protection that traditional banking provides.

Sources
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Last updated 2 years ago

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https://finematics.com/lending-and-borrowing-in-defi-explained/ https://www.futurelearn.com/info/courses/defi-exploring-decentralised-finance-with-blockchain-technologies/0/steps/256206