What Are Stablecoins and Why They Are Crucial

Stablecoins are cryptocurrencies designed to maintain a stable value, usually tied to a fiat currency such as the U.S. dollar (USD) or the real (BRL). They function as a bridge between the traditional world of finance and the crypto ecosystem, allowing for fast, cheap and global transactions without the extreme volatility of assets such as Bitcoin or Ethereum.

In Brazil, stablecoins such as USDT (Tether) and USDC (USD Coin) are widely used for exchange transactions, international transfers and as a reserve of value during periods of high volatility in the market.

Mechanism of Action and Guarantees

There are three main types of stablecoins:

  • Wrapped in trust:Each token is supposedly handled by an equivalent reserve in fiduciary currency (e.g. dollars in a bank).
  • Wrapped in cryptography:They are secured by other cryptocurrencies, such as Ethereum, but with over-sized collateral to absorb volatility.
  • The algorithms:They use algorithms and smart contracts to control supply and demand whileining parity, without direct physical reservation.

The Resolv Labs Attack and the Risk of Despeg

A recent event highlighted the dangers inherent in some stablecoin models.Resolve LabsUSR, the stablecoin issuer, suffered an exploitation in its smart contract that allowed an attacker to cunhar ("mint") 80 million tokens without the proper ballast.$25 millionbefore the exploit was contained, causing a "despeg" ("depeg") - that is, the loss of parity with the dollar.

This case is not isolated. In 2022, the collapse of the algorithmic stablecoin TerraUSD (UST), which lost its parity with the dollar and triggered a crisis in the market, had already exposed serious vulnerabilities. Incidents like these serve as a warning: the promised stability is conditional to the security of the code, the transparency of the issuer and the solidity of the shell model.

Lessons Learned for the User

For the Brazilian investor or user, the lesson is clear: not all stablecoins are equal. The counterparty risk – the risk that the issuer fails to honor the ransom – is real. Attacks on smart contracts, lack of regular audits and opaque ballast models are red flags. The choice of a stablecoin should be as thoughtful as the choice of any other financial asset.

How to Assess the Security of a Stablecoin

In the face of the risks, it is crucial to adopt a due diligence posture. Here is a practical guide to assessing the security of a stablecoin:

  • Transparency of the issuer and the reserves:Does the company behind the token publish audit reports regularly? Who are the auditors? Are the reserves made up only of cash and low-risk bonds, or do they include more risky assets?
  • History and Adoption in the Market:Stablecoins with a long operating history and widespread adoption on large exchanges tend to be more resilient. USDT and USDC, despite criticism, have an established network of liquidity and trust.
  • Introduction to Smart Contracts:Has the smart contract code been audited by renowned security companies such as CertiK, Trail of Bits or OpenZeppelin?
  • Regulation and Compliance:The issuer operates under the supervision of a regulatory authority? For example, Circle (USDC issuer) is licensed as a money transmitter in the U.S.
  • Models of Lastro:Prefer trusted or cryptographic models with robust supercolateralization for beginner users. Algorithmic stablecoins are experimental and carry higher technological and economic model risk.

The Role of Regulators and the CFTC Case

The regulatory scenario is evolving. Recently, aCommodity Futures Trading Commission (CFTC)This move, although technical, indicates a step towards supervised integration of digital assets into the traditional system, which may, in the future, bring more security and standards to products such as stablecoins.

In Brazil, the central bank is following the issue and has already regulated stablecoins lastreated in real through the cryptocurrency framework (Law 14.478/2022), requiring issuers to be authorized as payment institutions.

The Future of Stablecoins and Web Sustainability

Despite the downtime, stablecoins are a financial innovation with transformative potential. In order for them to fulfill their role as the foundation of Web3, it is necessary to advance on three fronts:

  1. The technical robustness:Developing higher security standards and continuous audits.
  2. The Radical Transparency:Emiters must adopt 100% auditable real-time reserves, preferably with very low-risk public bonds.
  3. The constructive regulation:Legal brands that protect users without stifling innovation, as has been discussed globally (e.g. MiCA in the European Union).

For the Brazilian ecosystem, the development of highly trusted stablecoins can be an important vector of financial inclusion and efficiency in payments.