DeFi Basics

Decentralized finance, or DeFi, is a fast-growing part of the digital asset world that aims to recreate traditional financial services—like lending, borrowing, and trading—using blockchain technology. Instead of relying on banks or brokers, DeFi platforms use smart contracts: self-executing agreements written in code and stored on blockchains. This design means that anyone with an internet connection can access financial services without an intermediary, potentially lowering costs and increasing access worldwide.

However, the openness and speed of DeFi come with significant risks. Most DeFi protocols are still experimental, and their code may not be thoroughly audited. Without central oversight, users are responsible for their own security, and there is little to no recourse if things go wrong. Additionally, the value of digital assets can be extremely volatile, and the ecosystem is a frequent target for hackers.

One well-known DeFi platform is Uniswap, which allows users to swap different cryptocurrencies directly from their wallets, without a central exchange. This is accomplished through automated market maker (AMM) smart contracts that set prices based on supply and demand. While this can provide liquidity and new opportunities, it also exposes users to risks such as "impermanent loss" (where the value of assets in a liquidity pool changes unfavorably), smart contract bugs, and the possibility of losing funds if the protocol is hacked. These risks are inherent to the DeFi model, where there is no customer support or insurance backing your assets.