Stablecoins Deep Dive

What Are Stablecoins?

A stablecoin is a cryptocurrency designed to maintain a stable value, typically pegged to a fiat currency like the US Dollar. While Bitcoin and other cryptos fluctuate wildly, stablecoins aim to always be worth approximately $1 USD.

For Sri Lankans, stablecoins serve a critical function: they allow you to hold digital dollars without needing a US bank account. Given the LKR's history of devaluation, many Sri Lankans use stablecoins as a way to preserve purchasing power.

Types of Stablecoins

1. Fiat-Collateralized (Centralized)

These are backed by real dollars (or equivalent assets) held in bank accounts. For every stablecoin in circulation, there should be $1 in a reserve.

• USDT (Tether) — The largest stablecoin by market cap. Widely used in Asia and on almost every exchange. However, Tether has faced criticism for lack of transparency about its reserves. It is not fully audited by a major accounting firm.
• USDC (USD Coin) — Issued by Circle, a regulated US company. Provides monthly attestation reports from a major accounting firm. Generally considered more transparent than USDT, though it also carries centralization risks.

2. Crypto-Collateralized (Decentralized)

These are backed by other cryptocurrencies locked in smart contracts. They use over-collateralization to maintain their peg.

• DAI — Created by MakerDAO, DAI is backed by crypto assets locked in smart contracts. To mint $100 of DAI, you might need to lock $150+ of ETH as collateral. It's more decentralized but more complex.

3. Algorithmic Stablecoins

These use algorithms and market incentives to maintain their peg — without direct collateral backing. This is the riskiest type.

The TerraLUNA Collapse — A Critical Lesson

In May 2022, the crypto world witnessed one of its most devastating collapses. TerraUSD (UST) was an algorithmic stablecoin that maintained its $1 peg through a complex mechanism linked to its sister token, LUNA.

Here's what happened:

1. UST maintained its peg by allowing users to swap 1 UST for $1 worth of LUNA and vice versa
2. The protocol offered an unsustainably high 20% annual yield on UST through a lending protocol called Anchor
3. When large amounts of UST were suddenly sold, the peg broke — UST dropped below $1
4. The mechanism minted massive amounts of LUNA to try to restore the peg, causing LUNA's price to crash
5. This created a "death spiral" — the more LUNA was minted, the less each LUNA was worth, making it impossible to restore the peg
6. Within days, UST went from $1 to nearly $0. LUNA went from $80+ to fractions of a cent
7. Over $40 billion in value was destroyed. Many people lost their life savings

The founder, Do Kwon, was later arrested and charged with fraud. This collapse also triggered the downfall of several major crypto firms including Three Arrows Capital and Celsius.

Risks of Stablecoins

Even "safe" stablecoins carry risks:

• Regulatory risk: Governments could ban or restrict stablecoins at any time
• Counterparty risk: For centralized stablecoins, you're trusting the issuer to actually hold the reserves
• Depegging risk: Stablecoins can temporarily or permanently lose their $1 peg
• Smart contract risk: For decentralized stablecoins, bugs in code could lead to losses
• Blacklisting: Both USDT and USDC issuers can freeze specific addresses if required by law enforcement

Sri Lankan Context

Stablecoins are extremely popular among Sri Lankan crypto users. After the 2022 LKR crisis, many turned to USDT and USDC as a way to hold dollar-denominated value. P2P platforms allow Sri Lankans to buy USDT with LKR directly from other users.

However, it's important to understand that holding stablecoins is not the same as holding actual US dollars in a bank. There is no deposit insurance, no government protection, and the issuer could theoretically fail.

⚠️ Disclaimer: This lesson is for educational purposes only. Stablecoins carry real risks including total loss of value, as demonstrated by the TerraLUNA collapse. IAMUVIN and uvin.lk do not recommend any specific stablecoin. Always do your own research and consult a financial professional.