Stablecoins 101: The Heart of Crypto
An introduction to what stablecoins are in Crypto.
An introduction to what stablecoins are in Crypto.
Nattynatman
Posted on Mar 13, 2025
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"Stable up"
This is a common phrase in crypto when the market takes a dip or strong correction.
It’s short for "Have you swapped to stablecoins?" - a way to avoid the chaos of volatility and downturns.
Stablecoins are fundamental to the entire crypto market. So, let’s answer:
- What exactly are they?
- Why do they exist?
- How do they work?
What Are Stablecoins?
Think of stablecoins like digital dollars that live on the blockchain.
The most popular examples are USDT (Tether) and USDC (Circle’s stablecoin) - collectively capturing ~90% market share.
They are designed to always be worth $1 (or another fixed value), making them a reliable way to trade crypto without the wild price swings of Bitcoin or Ethereum.
Currently, the total stablecoin market cap sits at $227.5B - the highest it has ever been - reflecting record interest in the industry.
How Do Stablecoins Work?
Stablecoins maintain their $1 peg using different mechanisms, typically pegged to a fiat currency like the US dollar.
Fiat currencies are government-issued money, like the US dollar or euro, that aren't backed by a physical commodity like gold, but by the word of the government.
1. Backing & Reserves
Every stablecoin is backed by something:
- Fiat-backed (e.g., USDC, USDT) → Every stablecoin issued should be backed by an equivalent amount of real dollars or safe assets (like U.S. Treasury bonds).
- Crypto-backed (e.g., DAI) → These stablecoins are backed by other cryptocurrencies locked in smart contracts. They use over-collateralization (holding more value in assets than issued stablecoins) to maintain stability.
- Algorithmic (e.g., UST, now failed) → These stablecoins rely on supply and demand mechanics without real backing, making them vulnerable to collapse.
The most popular method of backing is fiat (currently ~99% of stablecoins).
2. Issuance & Redemption
- Users can deposit USD to receive stablecoins and redeem them back for real dollars (if the system works properly).
3. Maintaining the Peg
Stablecoins stay at $1 through arbitrage and supply adjustments:
- If the stablecoin drops below $1 → Traders buy it cheaply and redeem it for $1 worth of assets, pushing the price back up.
- If the stablecoin rises above $1 → Traders sell it for a profit, increasing supply and bringing the price back down.
- Issuers (like Circle or Tether) can also adjust supply by minting or burning stablecoins.
These mechanisms ensure that stablecoins remain stable, most of the time.
Why do Stablecoins Exist?
Stablecoins solve major issues in traditional finance, especially for business payments. Current systems like SWIFT, credit/debit cards, and bank transfers come with high fees, slow settlement times, and fraud risks - even worse for cross-border transactions due to extra forex fees.
Stablecoins offer a faster, cheaper, and more reliable alternative:
- Instant, low-cost transactions globally.
- Stable value compared to volatile crypto assets.
- Seamless use in trading & DeFi, earning yield while staying on-chain.
On top of that, unlike fiat, users truly own their assets, due to the decentralized and permissionless nature of blockchain technology.
Use Cases of Stablecoins
🪙 Crypto Trading & DeFi
- Traders use stablecoins instead of withdrawing to a bank.
- In DeFi, stablecoins are used to lend, borrow, and earn interest.
🪙 Cross-Border Payments
- E.g. a worker in the U.S. can send USDT to family in the Philippines instantly, avoiding high international transaction fees.
🪙 Inflation Protection
- In high-inflation countries (e.g., Argentina, Turkey), people store value in stablecoins instead of their local currency.
🪙 Smart Contracts & Payments
- Businesses can automate payments using stablecoins, removing intermediaries.
- Example: A freelancer in India gets paid in USDC directly - no PayPal, no banks.
🪙 Banking the Unbanked
- Millions worldwide lack access to traditional banks but can store stablecoins in a smartphone wallet.
Stablecoins are like crypto’s version of a digital dollar, making transactions faster, cheaper, and more accessible worldwide.
Stablecoin Trends & Developments
Stablecoins are evolving fast, with banks eyeing their own stablecoin launches. Wall Street is entering the game.
- Regulation & Oversight → Governments see stablecoins as a financial disruptor.
Stablecoins will bring our payment system into the 21st century - Senator Cynthia Lummis
- Geopolitical Shifts → Non-USD stablecoins ($EURT, $BRZ, $IDRT) are gaining traction across Latin America, Asia, and Europe.
- Growing Adoption → More businesses are embracing stablecoins, with supply hitting all-time highs (e.g. Paypal, Revolut).
- Decentralized Alternatives → While fiat-backed giants dominate, decentralized stablecoins are emerging - with the ability to create stablecoins without reliance on the US treasury.
- Hybrid Models → New stablecoins (e.g., Frax, Ethena) blend fiat, crypto, and algorithmic mechanisms.
- Massive Transaction Volume → In 2024, stablecoins processed more value than Visa & Mastercard combined.
Risks
Stablecoins offer stability, but they aren’t risk-free. There’s still:
- Systemic Risk → Issuer failures or mismanagement could have ripple effects across financial markets. In 2023, USDC depegged after exposure to a failing bank, highlighting how centralized stablecoins can be vulnerable to financial instability.
- Centralized Stablecoins → Depend on banks and custodians, exposing users to counterparty risk and potential regulatory freezes.
- DeFi/Decentralized Stablecoins → Prone to oracle manipulation, smart contract exploits, and liquidity constraints during market stress.
- Market Risks → Flash crashes, mass redemptions, and bank-run scenarios can destabilize even well-backed stablecoins.
To mitigate these risks, issuers must be held to high operational standards, maintain full transparency, and diversify collateral sources. A well-regulated framework could cement stablecoins as a key pillar of the modern financial system.
Conclusion
Stablecoins have become an essential part of the crypto ecosystem, providing stability, fast transactions, and new financial opportunities.
While concerns around regulation and backing remain, their alignment with U.S. economic interests suggests they may not just survive but thrive under a more structured framework.
Adoption continues to grow, and stablecoins will likely play an even bigger role in both crypto and tradfi.
Key Takeaways:
- Stablecoins act as digital dollars, maintaining a stable value.
- They enable seamless crypto trading, DeFi applications, and global payments.
- Different types include fiat-backed, crypto-backed, and algorithmic stablecoins.
- Arbitrage and reserves help maintain their peg to $1.
- They serve as a liquidity sink, aligning with U.S. economic interests.
- Even stablecoins carry a level of risk.
- Regulation could shape their future, but they are likely to remain a dominant force.
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