DeFi sounds technical and distant until you understand the basic pieces: a wallet, stablecoins, and a decentralized exchange.

Here we tell you how to set up your first operation step-by-step, what mistakes to avoid from the start, and when it makes sense to choose a more direct solution instead of DeFi.

Download the belo app and check how to receive and use digital dollars according to your account and current conditions.

Why Argentines are looking towards DeFi

Every time the peso loses value against the dollar, more people look for ways to protect their income outside the traditional banking circuit.

Foreign exchange restrictions and historically double-digit inflation created the ideal environment for decentralized finance to find a receptive audience, willing to learn in order to gain autonomy over their own money.

DeFi (decentralized finance) is a set of financial services operating on blockchain networks, without banks or centralized intermediaries and without office hours. 

What enables all of this are smart contracts, programs that execute automatically when certain conditions are met, running on networks like Ethereum.

Imagine a contract that says "when you deposit 100 USDC, you receive liquidity tokens in return" and it executes on its own, without anyone approving it.

This automated logic allows building everything from exchanges to lending systems that operate 24 hours a day. In Argentina, this infrastructure solves a concrete problem.

While the traditional system limits the purchase of dollars and applies taxes on foreign currency consumption, DeFi allows operating with stablecoins (digital currencies pegged to the dollar's value) without those restrictions.

Accessing that freedom requires understanding the pieces that make up the ecosystem.

The pieces you need to know

The first piece is the wallet (digital wallet). MetaMask is the most popular wallet for interacting with Ethereum and its compatible networks, available as a browser extension or mobile app.

Unlike a bank account, you control the private keys, which means no one can freeze, block, or hold your funds. That autonomy comes with proportional responsibility.

The second piece is stablecoins. USDT, USDC, and DAI maintain parity with the US dollar through different mechanisms. USDT and USDC are backed by dollar reserves and treasury bonds.

DAI maintains its parity through a cryptocurrency collateral system managed by smart contracts.

For those who want to save in digital dollars, all three serve the same basic function, although USDC tends to be the favorite for its transparency in audits.

Comparison of major stablecoins

Stablecoin · Issuer · Parity Mechanism

USDT · Tether · Backed by dollar reserves and treasury bonds

USDC · Circle · Backed by dollar reserves and treasury bonds, with periodic audits

DAI · MakerDAO · Cryptocurrency collateral managed by smart contracts

The third piece is decentralized exchanges (DEX) like Uniswap, where you can swap tokens directly from your wallet, without creating an account or verifying identity. 

These exchanges work with liquidity pools where other users deposit funds in exchange for fees, opening the door to the concept of yield farming.

Each protocol has specific risks ranging from smart contract bugs to impermanent losses when token prices fluctuate.

Your first operation step-by-step

To move from theory to practice, it is advisable to follow a sequence.

1. Download MetaMask from the official site (metamask.io) and create a new wallet. The most critical step is the seed phrase, the 12 words that work as the master key to your wallet. 
   
   Write it down on paper, never in a digital file or in a screenshot, and keep it in a safe place. If someone gets those words, they have full access to your funds.

2. With the wallet created, buy cryptocurrency on a local platform that accepts Argentine pesos. Several Argentine exchanges allow you to buy USDC or USDT via bank transfer.

3. Once you have stablecoins on the exchange, send them to your MetaMask wallet. Here a concept arises that often confuses beginners: the network. When you withdraw USDC from the exchange, you need to choose which network to send it through (Ethereum, Polygon, Arbitrum, among others). 
   
   If you send through a different network than the one your wallet is configured for, funds can be lost, so verifying that both match is a step that should never be skipped.

4. With funds in your wallet, you can go to Uniswap, connect MetaMask, and make a swap between tokens. Every transaction on Ethereum requires paying gas, a fee that can vary between less than a dollar on networks like Arbitrum to several dollars on Ethereum mainnet during times of high demand. 
   
   Always start with a small amount to verify that everything works before moving larger sums.

Errors to avoid from the start

• Never share your seed phrase with anyone, as no legitimate service will ask for it.

• Verify URLs before connecting your wallet, because fake sites imitating Uniswap or MetaMask are one of the most common forms of phishing.

• Check gas fees before confirming a transaction, because during times of congestion you might end up paying more in fees than the amount you wanted to move.

When is DeFi convenient and when is a more direct solution better?

DeFi makes sense when you seek total autonomy, want to experiment with yield protocols, or need to operate without restrictions from any intermediary. 

If your main goal is to receive dollars from abroad, save in stablecoins, and spend those funds when you need them, the complexity of managing wallets, networks, and gas may be disproportionate to the benefit.

For those who work with foreign clients, at belo we designed a solution that allows receiving dollar payments credited as USDC, deciding when to convert them to pesos, and using those funds from the same app, all without needing to manage private keys or choose blockchain networks.

The difference matters when what you want is to collect and use your money without spending hours understanding the technical infrastructure behind each transaction.

For travel abroad, the equation is similar. While in DeFi you would have to convert stablecoins to local currency of the destination country, passing through several intermediate steps, a wallet that allows you to pay directly with the amount defined at the time of consumption eliminates exchange rate uncertainty and the perceptions applied by traditional credit cards.

The decision between DeFi and a more integrated solution depends on what problem you are solving. 

If you want to learn, explore, and have absolute control over your digital assets, DeFi is the way. 

If you want to operate in dollars practically to save, receive payments from abroad, or pay for a trip, the learning curve of decentralized protocols is probably a detour from what you actually need to solve.

Frequently asked questions about starting with DeFi in Argentina from scratch

Do I need advanced technical knowledge to start with DeFi?

Programming knowledge is not necessary, but it is useful to understand basic concepts such as wallets, seed phrases, networks, and gas fees before moving real funds. Starting with small amounts while you learn reduces the risk of making costly mistakes.

A good practice is to make your first transactions on low-cost networks such as Polygon or Arbitrum, where fees are lower and the margin for error is more manageable.

What happens if I choose the wrong network when sending stablecoins to MetaMask?

If you send funds through a network other than the one configured in your wallet, the tokens may become inaccessible or permanently lost. Always verify that the sending network from the exchange and the network configured in MetaMask are exactly the same before confirming any withdrawal.

If you make that mistake, in some cases it is possible to recover the funds by manually adding the corresponding network in MetaMask, but it does not always work. Verifying beforehand is the only real guarantee.

Do stablecoins like USDC really maintain their value at 1 dollar?

Under normal conditions yes, because they are backed by real reserves. Even so, extreme market events or issuer problems can generate temporary deviations from parity, so it is advisable to diversify and not concentrate all savings in a single stablecoin.

USDC publishes periodic audits of its reserves, which makes it an option with greater visibility of its actual backing. That transparency is a useful criterion for comparing options.

Does DeFi have any regulation in Argentina?

By operating on blockchain networks without centralized intermediaries, DeFi works outside the traditional banking regulatory framework. That does not mean it is illegal, but it implies that there is no body to protect the user in case of errors or losses, unlike a bank or regulated exchange.

The regulatory framework surrounding crypto assets in Argentina is in development. It is advisable to stay attentive to regulatory changes, especially if you operate with significant amounts.

Is yield farming safe for a beginner?

Yield farming involves risks that go beyond price volatility, including bugs in smart contracts and impermanent losses due to fluctuations between token pairs. Knowing the fundamentals of wallets and swaps well is a necessary previous step before exploring yield strategies.

Before depositing funds in any yield protocol, it is worth checking if the contract was audited by third parties and how long it has been operating without incidents. Those two pieces of data reduce, although do not eliminate, the risk.